CN111851302A - Rapid construction method of steel trestle - Google Patents
Rapid construction method of steel trestle Download PDFInfo
- Publication number
- CN111851302A CN111851302A CN202010713694.9A CN202010713694A CN111851302A CN 111851302 A CN111851302 A CN 111851302A CN 202010713694 A CN202010713694 A CN 202010713694A CN 111851302 A CN111851302 A CN 111851302A
- Authority
- CN
- China
- Prior art keywords
- steel
- pile
- casing
- bailey
- steel pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D15/00—Movable or portable bridges; Floating bridges
- E01D15/12—Portable or sectional bridges
- E01D15/133—Portable or sectional bridges built-up from readily separable standardised sections or elements, e.g. Bailey bridges
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/26—Placing by using several means simultaneously
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention relates to the technical field of bridge construction, in particular to a quick construction method of a steel trestle, which comprises the following steps: s1, firstly, inserting and driving steel pipe piles as pile foundations and pier columns by utilizing a crawler crane and a vibration hammer, and welding parallel channel steel among the steel pipe piles to form a whole; s2, mounting pile top longitudinal beams, cross beams and Bailey beams, laying transverse distribution beams and welding firmly; s3, paving the longitudinal distribution beam again, paving a steel plate with the thickness of 10mm, and welding the steel plate and the distribution beam firmly to form a bridge deck; and S4, finally arranging a guard rail and a safety protection facility. The invention aims to solve the problems of complex working procedures, large workload and low working efficiency of the existing steel trestle construction method.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a quick construction method of a steel trestle.
Background
When the steel trestle is constructed, the on-site welding quantity is large, and the welding condition is poor, so that the welding method becomes an important factor for restricting the rapid construction of the steel trestle. The existing steel trestle construction method is mainly characterized in that a crawler crane is matched with a vibration hammer to insert and beat a steel pipe pile, and the construction is propelled forward step by step. The concrete construction process is as follows: the method comprises the steps of firstly setting a special steel pipe pile inserting and driving guide frame, after the steel pipe pile inserting and driving is completed, cutting steel pipe piles with excessive lengths at the front end of the pile driving guide frame by an operator, welding pile caps, then dismantling the steel pipe pile inserting and driving guide frame, installing a distribution beam, then driving to the position near the steel pipe piles by a small ship or hoisting the operator to the position near the steel pipe piles by a crawler crane, welding a connection system between piles, finally hoisting Bailey beams and a support frame in groups, and paving a bridge deck. Although the method can meet the construction requirement, the method has the following defects:
1. the process is complicated: the pile driving guide frame is of a special structure, is dismantled after construction of each span of the steel pipe pile is completed, and is installed before the next span of the steel pipe pile is inserted and driven, so that labor and time are wasted.
2. The field welding workload is large, the operation is inconvenient, and the construction work efficiency is low: the connecting system between piles has a certain height, and the steel pipe pile inserting and driving guide frame can not provide a welding platform of the connecting system between piles, a lengthening or shortening platform of the steel pipe pile and a welding platform of a steel pipe pile cap for an operator at the same time, and a crawler crane or a small ship is required to be adopted for cooperation operation, so that the welding quality and the welding efficiency are influenced.
Disclosure of Invention
The invention aims to solve the technical problems of complex working procedures, large workload and low working efficiency of the existing steel trestle construction method.
In order to achieve the purpose, the invention provides the following technical scheme: a quick construction method of a steel trestle comprises the following steps:
s1, firstly, inserting and driving steel pipe piles as pile foundations and pier columns by utilizing a crawler crane and a vibration hammer, and welding parallel channel steel among the steel pipe piles to form a whole;
s2, mounting pile top longitudinal beams, cross beams and Bailey beams, laying transverse distribution beams and welding firmly;
s3, paving the longitudinal distribution beam again, paving a steel plate with the thickness of 10mm, and welding the steel plate and the distribution beam firmly to form a bridge deck;
and S4, finally arranging a guard rail and a safety protection facility.
Preferably, the steel pipe pile construction of S1 includes:
s21, advancing all materials in advance, and preparing before construction;
s22, inserting and driving a steel pipe pile foundation by a crawler crane, wherein the steel pipe pile inserting and driving adopts a vibration hammer vibration driving method of the crawler crane of 50T, and after the crawler crane is in place, the steel pipe pile is welded and formed on the ground at one time according to the depth of water; the method comprises the following steps of (1) welding and inserting and driving the steel pipe pile, wherein a 45-degree groove treatment is performed on an interface at the butt joint of the steel pipes, the lengthening adopts equal-length annular welding, the surplus height of a welding seam is not less than 2mm, and the butt joint misalignment size is not more than 3 mm; for larger butt joint misalignment, a reinforced steel plate is wrapped outside and peripheral fillet weld is welded for reinforcement treatment; the inserting and driving of the steel pipe piles are propelled from the bank to the river center; after the plane position and the verticality of the steel pipe pile are adjusted, a hammer is pressed in by depending on the weight of the steel pipe pile and the weight of the pile hammer, the pile position and the inclination are measured and retested, and the hammer is hammered after the deviation meets the requirement; a50 t crawler crane is matched with a vibration hammer to drive the steel pipe pile, the perpendicularity between the pile position and the pile needs to be continuously detected in the vibration process, and the deviation needs to be timely corrected when the deviation is found. After the sleeper beam, the Bailey beam and the bridge deck are laid on the pile top, the 50T crawler crane moves forwards to carry out inserting and driving of the next span steel pipe pile; determining the final penetration depth of the steel pipe pile by adopting a method of double control of the designed elevation of the pile bottom and the final penetration degree, and ensuring that the embedding depth of the steel pipe pile is not less than 5 m; and stopping piling when the steel pipe pile does not reach the designed elevation of the pile bottom and the final penetration reaches 3-5 cm per minute.
Preferably, the steel pipe pile connection and pile top beam construction in S1 includes the following steps:
after the steel pipe piles are driven and inserted, the connection among the steel pipe piles and the construction of a pile top sleeper beam can be carried out; the materials required by the trestle are all stacked at a preset position; determining the blanking length of channel steel and I-shaped steel according to the distance of the steel pipe piles which are inserted and driven and the designed connection length; the connection between piles and the installation of a pile top sleeper beam are manually operated on an operation platform, the operation platform adopts 3 pieces of 20b I-steel with the length of 1 meter at the position of a steel pipe column, a 5cm thick wood plate is laid on the I-steel to form a walking platform, and railings are welded into a 1 multiplied by 1.5 multiplied by 5m cubic platform by adopting phi 48 multiplied by 3mm steel pipes; the whole platform is suspended on the pile top by using 2 hand hoists of 3t, and the crawler cranes are installed in a matching way; after the connection among the piles and the installation of the sleeper beam at the top of the pile are finished, removing the operating platform by using a crawler crane for preparing for the next pier stud;
the connection between piles and the cross brace must be fully welded with the steel pipe pile body, the operation platform is lifted to a proper height after welding is completed, a gas cutting gun is used for cutting off redundant steel pipe piles along the pile head elevation determined by measurement, and a gap of a pile top sleeper beam is reserved at the pipe orifice of each steel pipe pile, so that the welding of the I-shaped steel of the pile top sleeper beam and the steel pipe pile is facilitated.
Preferably, the assembling and erecting of the beret beam in S2 includes the following steps:
s32, assembling the Bailey beams at a preset position, lifting the pre-installed Bailey beams by using a bolster wood below, placing the Bailey beams behind the assembled Bailey beams and forming a straight line with the Bailey beams, using a steel stick to penetrate through a gusset plate to lift the front ends of the Bailey beams, inserting pin bolts after aligning lower chord pin holes, then lifting the rear ends of the Bailey beams, inserting upper chord pin bolts and arranging safety bolts; connecting the vertical support frame and the Bailey sheet into a whole by using a support frame bolt, and installing one Bailey sheet at the joint position of each section; in order to ensure the rigidity of the beam, the Bailey pieces, the reinforcing chord members and the horizontal support frame are connected in a staggered manner by adopting joints; the Bailey pieces are assembled according to groups, each group is 12m long, and Bailey pieces are connected well through connecting pieces.
S33, erecting the Bailey beams, and combining the lifting capacity of a 50t crawler crane, so that the single-span 2-row Bailey beams are erected as a group; firstly, carrying out measurement lofting on a top cross beam of a lower structure, and determining the accurate position of the bailey truss; secondly, the assembled Bailey main truss sheets are transported to the back of a crawler crane; dividing every two Bailey sheets into one group, firstly installing one group of Bailey sheets on a 50t crawler crane, firmly binding the Bailey sheets on a cross beam after the Bailey sheets are accurately positioned, then welding a limiting stopper, then installing the other group of Bailey sheets, simultaneously connecting the Bailey sheets with the installed group of Bailey sheets by using Bailey sheet 20 channel steel bridging, and so on to finish the erection of the whole span Bailey beam; and finally, two wind-resistant pull rods are arranged at the bottom of each span, two cross braces are arranged in the vertical plane, and the in-plane rigidity of the main beam is improved.
Preferably, the installation of the transverse distribution beam in S2 includes the following steps:
manually matching a 50t crawler crane to install transverse distribution beams of a trestle bridge deck and a steel platform deck, and fixing the trestle bridge with Bailey sheets by using a beam clamp after installing an upper beam of the Bailey beam of the trestle; the supporting point of the cross beam must be placed at the supporting point position of the vertical chord or the diamond chord of the Bailey beam to meet the stress requirement;
laying an upper beam and a longitudinal distribution beam of the Bailey beam according to a designed interval, hoisting the longitudinal distribution beam by using a crawler crane, installing and positioning the longitudinal distribution beam in a manual matching manner, welding the longitudinal distribution beam and the upper beam of the Bailey beam, and connecting and fixing each distribution beam by using a steel bar with the diameter of 28mm at the lower opening of the distribution beam.
Preferably, in the bridge deck construction in S3, a crawler crane is used to hoist 10mm steel plates onto the distribution beam, the steel plates and the distribution beam are welded and fixed, and each panel is provided with a 1cm expansion joint.
Preferably, the connection between the trestle and the steel platform in S3 comprises the following steps:
firstly, positioning a steel wire rope setting position on a steel pipe pile by using an operating platform for installing inter-pile connection, and welding a circle of steel bar with the diameter of 28mm on the steel pipe pile at the set position to prevent the steel wire rope from sliding downwards after being bound; the steel wire rope is tightened, 4 rope clamps are arranged at two ends of the steel wire rope respectively, and the screws are screwed tightly.
Preferably, the construction method further comprises the steel casing construction, and the steel casing construction comprises the following steps:
s41, processing a steel pile casing, wherein the size of the steel pile casing is determined according to the diameter of the pile, and a steel plate with the thickness of 10mm and a reinforcing hoop with the width of 30cm are welded on each 2m of the steel pile casing; in addition, a 50cm edge is arranged at the bottom of the protective cylinder, and a 14mm steel plate is adopted for reinforcement treatment to prevent the bottom of the pipe from being rolled up when drilling is performed; the design length of the steel casing is determined according to the actual geological condition, the length of the steel casing is inserted into the covering layer as far as possible, and slurry leakage and hole collapse are avoided in the pile foundation construction process; determining that the length of each section of steel casing does not exceed 6m according to the lifting capacity, the height of a lifting hook, the height of a drilling platform and the like of the crawler crane;
s42, manufacturing and installing a guide frame, wherein the guide frame is processed by section steel, and the top of the positioning frame is respectively provided with four limiting devices; determining the accurate position of each pile guide frame on the platform according to the pile position control point and the geometric dimension of the outer frame of the guide frame; hoisting the manufactured guide frame to a platform by using a crawler crane, and accurately positioning the guide frame on the platform at the pile position of the pile casing to be lowered; during installation, a leveling rod is placed on a supporting beam of the guide frame, a steel plate is arranged at the contact position of the supporting beam and the platform distribution beam in a cushioning mode to adjust the flatness of the supporting beam, and meanwhile, a level meter is used for checking; after the plane position and the vertical verticality of the guide frame are adjusted, the accuracy of the guide frame is checked by using a total station, the support beam of the guide frame is firmly connected with the platform distribution beam, and the lower opening of the guide frame and the adjacent steel pipe pile are pulled and fixed by using a chain pulley;
s43, positioning and detecting the steel casing, lifting the steel casing in place by using a 50t crawler crane, then accurately positioning the steel casing, and then sinking the steel casing to a designed elevation by using a vibration hammer;
s44, lengthening the steel protecting cylinders, wherein the length of each section of steel protecting cylinder is not more than 5m, the first section of steel protecting cylinder is hung into the guide frame by a crawler crane, and the steel protecting cylinders are put down along the inner wall of the guide frame; when the upper opening of the protective cylinder is placed to be 0.4m away from the upper part of the guide frame, a bracket is welded on the side wall of the protective cylinder, so that the protective cylinder is supported on the guide frame, and the crawler crane loosens the hook; hoisting a second section of steel casing, aligning two sections of casing, and welding and lengthening; slightly hoisting the steel casing by the crawler crane, cutting off the bracket on the first section of steel casing by oxygen cutting, lowering the lengthened steel casing to a designed length, and lowering the steel casing to the river bed;
s45, adjusting the position of the steel casing, lengthening the steel casing and putting the steel casing in place, observing whether the steel casing meets the requirements of construction specifications or not from two vertical angle directions by using a theodolite, and adjusting the position of the steel casing by using a crawler crane, a chain block and the like;
s46, inserting and beating the steel pile casing, wherein an internal support is arranged 1m below the top of the pile casing before inserting and beating, and the vibration clamp is prevented from enabling the pile casing to generate radial plastic deformation; when each section of steel casing is inserted and beaten in place, the inner support needs to be timely released, and a safety rope is tied to the inner support when the inner support is released; inserting and beating a steel casing by adopting a 120-type vibration hammer; the final penetration depth of the steel pile casing is determined by a double-control method of the design elevation of the bottom of the pile casing and the final penetration; and stopping inserting and beating when the steel pile casing does not reach the designed elevation of the bottom of the pile casing but the final penetration reaches 3-5 cm per minute.
S47, mounting the steel casing in a parallel connection mode, and mounting the steel casing in a parallel connection mode after the steel casing is inserted and beaten in place, wherein the height of a welding seam of the steel casing in the parallel connection mode is not less than 8 mm;
s48, when the steel casing is inserted and driven, the center position of the steel casing is determined by using a total station, and then a guide pile is made on the platform; when the steel casing is lowered, a vertical ball and a horizontal ruler are adopted to check the verticality of the casing, meanwhile, the elevations of four corners of the top of the casing are controlled by a level gauge, and the inclination rate of the casing is converted through the height difference of the top of the casing; after the pile casing is in place, rechecking the plane position of the pile casing by using a total station; in the inserting and beating process of the pile casing, the perpendicularity and the plane deviation of the pile casing are monitored, and problems are found and corrected in time.
The invention solves the problems of complex working procedures, large workload and low working efficiency of the existing steel trestle construction method, and the specific beneficial effects of the method are embodied in the following specific implementation mode.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic illustration of the concrete placement of the abutment of the present invention;
FIG. 3 is a schematic view of the welding of the steel pipe pile according to the present invention;
FIG. 4 is a schematic drawing of steel pipe pile driving according to the present invention;
FIG. 5 is a schematic view of an operating platform according to the present invention;
FIG. 6 is a schematic view of the construction of the longitudinal and transverse connection between piles according to the present invention;
FIG. 7 is a schematic view of the installation of the bailey piece set of the present invention;
FIG. 8 is a schematic view of the installation of the deck system of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, a rapid construction method of a steel trestle comprises the steps of firstly, inserting and driving steel pipe piles as pile foundations and pier columns by utilizing a crawler crane and a vibration hammer, and welding parallel channel steel among the steel pipe piles to form a whole; secondly, installing pile top longitudinal beams, cross beams and Bailey beams, laying transverse distribution beams and firmly welding; laying the longitudinal distribution beam again, laying a steel plate with the thickness of 10mm and firmly welding the steel plate with the distribution beam to form a bridge deck; and finally, arranging a protective railing and a safety protection facility.
According to the structural characteristics of the engineering, the construction of the trestle is carried out by utilizing a 50T crawler crane and adopting a 'fishing method' process.
As shown in fig. 2, in the construction method of the steel trestle and the steel platform, the bridge abutment concrete is poured and the abutment back is backfilled.
In the process of the construction of the steel pipe pile,
1. all materials are put into the field in advance and are prepared before construction. The phi 630 multiplied by 10mm steel pipe piles are purchased in the market according to the material plan, and the length of each pile is 12 m.
2. Steel pipe pile foundation inserted and driven by crawler crane
(1) And (3) inserting and driving the steel pipe piles by adopting a vibration hammer vibration driving method of a 50T crawler crane, and welding and forming the steel pipe piles on the ground at one time according to the depth of water after the crawler crane is in place.
(2) Steel pipe pile welding and inserting driving
The lengthening welding quality control of the steel pipe pile is a key link. The method comprises the steps of firstly, conducting 45-degree groove processing on an interface at the butt joint of the steel pipes, adopting equal-length annular welding for lengthening, and enabling the weld reinforcement not to be smaller than 2 mm. The butt joint misalignment dimension is not more than 3 mm. For larger butt joint misalignment, an outer reinforced steel plate is wrapped and peripheral fillet welding is welded for reinforcement treatment, as shown in fig. 3.
1) Before welding, rust, oil stain, water vapor and sundries in the range of 30mm above and below the welding line are removed completely.
2) The welding wire, the welding rod and the welding flux are dried before welding.
3) The welding positioning points and welding should be carried out symmetrically. During open-air welding, the bending of the pile body caused by sunlight irradiation needs to be considered.
4) The steel pipe pile is welded in multiple layers, welding slag is removed in time after welding of each layer of welding line, appearance inspection is conducted, and joints of each layer of welding line are staggered.
5) The inserting and driving of the steel pipe piles are propelled from the bank to the river center. After the adjustment of the plane position and the verticality of the steel pipe pile is completed, the hammer begins to be pressed, the steel pipe pile and the pile hammer are pressed in by means of the weight of the steel pipe pile and the pile hammer, the pile position and the inclination are retested in a measuring mode, and the hammer begins to be hammered after the deviation meets the requirement.
6) A50 t crawler crane is matched with a vibration hammer to drive the steel pipe pile, the perpendicularity between the pile position and the pile needs to be continuously detected in the vibration process, and the deviation needs to be timely corrected when the deviation is found. After the sleeper beam, the Bailey beam and the bridge deck are laid on the pile top, the 50T crawler crane moves forwards to carry out inserting and driving of the next span steel pipe pile. According to the method, the construction is performed step by step.
7) The final penetration depth of the steel pipe pile is determined by adopting a double control method of the designed elevation of the pile bottom and the final penetration, and the embedment depth of the steel pipe pile is not less than 5 m. And when the steel pipe pile does not reach the designed elevation of the pile bottom and the final penetration reaches 3-5 cm per minute, stopping piling, as shown in figure 4.
Construction of steel pipe pile-to-pile connection and pile top cross beam
And after the steel pipe piles are inserted and driven, the connection among the steel pipe piles and the construction of the pile top sleeper beam can be carried out. The landing stage requires all the materials used to be stacked in a predetermined position. And determining the blanking length of the channel steel and the I-shaped steel according to the spacing of the steel pipe piles which are inserted and driven and the designed connection length. The connection between piles and the installation of a pile top sleeper beam are manually operated on an operation platform, the operation platform adopts 3 pieces of 20b I-steel with the length of 1 meter at the position of a steel pipe column, a 5cm thick wood plate is laid on the I-steel to form a walking platform, and railings are welded into a 1 x 1.5 x 5m cubic platform by adopting phi 48 x 3mm steel pipes. The whole platform is suspended on the pile top by using 2 manual hoists of 3t, and the crawler crane is installed in a matching mode. After the connection among the piles and the installation of the sleeper beam at the top of the piles are finished, the operating platform is removed by utilizing a crawler crane to be used at the next pier stud.
The connection between piles and the cross brace must be fully welded with the steel pipe pile body, the operation platform is lifted to a proper height after welding is completed, a gas cutting gun is used for cutting off redundant steel pipe piles along the pile head elevation determined by measurement, and a gap of a pile top sleeper beam is reserved at the pipe orifice of each steel pipe pile, so that the welding of the I-shaped steel of the pile top sleeper beam and the steel pipe pile is facilitated.
When the I-steel of the steel platform is used for long-time welding, the steel plate with the thickness of 10mm is used for double-sided side welding, the side welding length is not less than 15cm, and a welding seam must meet the requirement. The welding seams of all structures require full, smooth and continuous metal surfaces of the welding seams, holes and cracks are avoided, and welding slag must be knocked out completely. The surface residual height of the butt welding line is not less than 2mm, and the leg height of the fillet welding line meets the requirement that hf is not less than 8 mm. As shown in fig. 5 and 6.
Assembling and erecting Bailey beam
1. Assembly of Bailey beams
The Bailey main beam is assembled at a preset position, the lower bolster sleeper lifts the pre-installed Bailey beam, the Bailey beam is placed behind the assembled Bailey beam and is in a straight line with the assembled Bailey beam, two persons use a steel stick to penetrate through the gusset plate to lift the front end of the Bailey beam, the lower chord pin hole is aligned and then inserted into the pin bolt, then the rear end of the Bailey beam is lifted, the upper chord pin bolt is inserted and the safety bolt is arranged. The vertical support frame and the bailey sheet are connected into a whole by a support frame bolt, and one joint of each section of the bailey sheet is arranged. In order to ensure the rigidity of the girder, joints are connected among the Bailey pieces, the reinforcing chord members and the horizontal support frame in a staggered manner, so that the displacement of the girder caused by the deformation of the truss joints can be reduced. The Bailey pieces are assembled according to groups, each group is 12m long, and Bailey pieces are connected well through connecting pieces.
2. Bailey beam frame
The single-span 2-row Bailey beams are erected as a group by combining the lifting capacity of a 50t crawler crane.
1) And (4) carrying out measurement lofting on a top cross beam of the lower structure, and determining the accurate position of the bailey truss.
2) And (5) transporting the assembled Bailey main truss sheets to the back of a crawler crane.
3) Every two bailey pieces are divided into one group, a 50t crawler crane firstly installs one group of bailey pieces, the bailey pieces are firstly firmly bound on a cross beam after being accurately positioned, then a limiter is welded, then the other group of bailey pieces are installed, and meanwhile, the bailey pieces are connected with the installed group of bailey pieces through 20 channel steel bridging. And the whole span of the Bailey beam is erected by parity of reasoning.
4) 2 wind-resistant pull rods are arranged at the bottom of each span, 2 cross braces are arranged in the vertical plane, and the rigidity in the plane of the main beam is increased. As shown in fig. 7.
Mounting of transverse distribution beams (25a I-beams)
The transverse distribution beam of the trestle bridge floor and the steel platform floor is installed by manually matching a 50t crawler crane, and after the upper beam of the Bailey beam of the trestle is installed, the beam clamp and the Bailey sheet are fixed. The supporting point of the cross beam must be placed at the supporting point of the vertical chord or the diamond chord of the Bailey beam to meet the stress requirement.
And laying an upper beam and a longitudinal distribution beam (12I-shaped steel) of the Bailey beam according to the designed interval. The longitudinal distribution beam is hoisted by a crawler crane and is installed and positioned in a manual matching mode, the longitudinal distribution beam and the upper cross beam of the Bailey beam are welded, and each distribution beam is fixedly connected at the lower opening of the distribution beam by a steel bar with the diameter of 28 mm.
The steel platforms are also paved with transverse and longitudinal distribution beams on the Bailey beams according to the designed intervals. The connection method is the same as above. 5.2.6 bridge deck system and platform construction
After the distribution beams (25a I-steel and 12I-steel) of the single-span trestle and the steel platform are installed, construction of a bridge deck system and a platform surface can be carried out. And hoisting a 10mm steel plate to a 12I-steel distribution beam by using a crawler crane, welding and fixing the steel plate and the distribution beam, and arranging an expansion joint of 1cm on each panel.
Trestle, platform face railing height 1.5m adopt 48 x 3.5mm welding steel pipe welding of phi, stand interval 2m, weld on trestle and steel platform's horizontal distribution roof beam, set up warning mark and light on the railing. As shown in fig. 8.
Connection between trestle and steel platform
In order to increase the restraint of the trestle and the steel platform in the transverse direction and increase the impact of strong wind and running water of the trestle and the steel platform, steel wire ropes with the diameter of phi 28mm are used for flexibly binding and connecting the trestle and the steel pipe piles of the steel platform, one steel wire rope is arranged on the top surface of each steel pipe pile, and one steel wire rope is arranged below the water surface at intervals of 2 meters.
Firstly, an operation platform for installing inter-pile connection is utilized to determine the position for arranging the steel wire rope on the steel pipe pile, and a circle of steel bar with the diameter of 28mm is welded on the steel pipe pile at the arranged position to prevent the steel wire rope from sliding downwards after being bound. The steel wire rope is tightened, 4 rope clamps are arranged at two ends of the steel wire rope respectively, and the screws are screwed tightly.
Construction of pile casing
And the construction process comprises the steps of manufacturing the protective cylinder in a processing field in sections, transporting the protective cylinder to a pier position, beating the protective cylinder by using a vibration hammer in an inserting mode, and welding the protective cylinder to a height.
1. Processing of steel casing
The size of the pile casing is determined according to the pile diameter, and the pile diameter of the pile foundation of the No. 2 and No. 3 piers of the Yangtze river mouth bridge is 2.8m (the steel casing is processed by Q235 steel plates with the outer diameter phi 3100mm and the wall thickness 16 mm). Welding a steel plate with the thickness of 10mm and a reinforcing hoop with the width of 30cm to each 2m of the protective cylinder; in addition, a 50cm edge is arranged at the bottom of the protective cylinder, and a 14mm steel plate is adopted for reinforcement treatment so as to prevent the bottom of the pipe from being rolled up when drilling is performed.
The design length of the steel casing is determined according to actual geological conditions, the length of the steel casing is inserted into the covering layer as far as possible, and slurry leakage and hole collapse are avoided in the pile foundation construction process. And determining that the length of each section of steel casing does not exceed 6m according to the hoisting capacity, the height of a lifting hook, the height of a drilling platform and the like of the crawler crane.
2. Manufacturing and mounting of guide frame
The positioning guide frame is machined by profile steel and is 4m high, and four limiting devices are arranged at the top of the positioning frame respectively.
The sizes of all the details are required to be accurate, and the welding seam is required to meet the grade two-level requirement of the welding seam.
And determining the accurate position of each pile guide frame on the platform according to the pile position control point and the geometric dimension of the outer frame of the guide frame, and marking by using paint. And hoisting the manufactured guide frame to the platform by using a crawler crane, and arranging the guide frame on the platform at the pile position of the pile casing to be placed down for accurate positioning. When the positioning guide frame is erected, the central axis of the guide frame must be coincided with the axis of the pile.
The support plane must be strictly horizontal. When the device is arranged, a level ruler can be placed on the supporting beam of the guide frame, a steel plate is arranged at the contact position of the supporting beam and the platform distribution beam in a cushioning mode to adjust the flatness of the supporting beam, and meanwhile, the leveling instrument is used for checking.
After the plane position and the vertical verticality of the guide frame are adjusted, the accuracy of the guide frame is checked by using a total station, the support beam of the guide frame is firmly connected with the platform distribution beam, and the lower opening of the guide frame and the adjacent steel pipe pile are pulled and fixed by using a chain pulley.
3. Positioning and detecting of steel casing
The steel casing is lifted to a proper position by a 50t crawler crane, then accurately positioned, and then sunk to a designed elevation by a vibration hammer.
The sinking quality standard of the steel casing is as follows:
(1) the bending rise of the longitudinal axis direction of the protective cylinder is less than or equal to 0.3 percent, and the stay wire measurement is adopted;
(2) the center deviation of the top surface of the pile casing is less than or equal to 50 mm;
(3) the inclination of the protective cylinder is less than or equal to 0.5 percent. (the top surface of the protective cylinder or the hammer ball is checked by the level gauge detection).
4. Extension steel protective cylinder
The length of each section of steel casing is not more than 5 meters, and the steel casing is generally formed by 1-2 sections of butt welding. And hoisting the first section of steel protecting cylinder into the guide frame by using a crawler crane, and putting down the steel protecting cylinder along the inner wall of the guide frame. When the upper opening of the protective cylinder is placed to be 0.4m away from the upper part of the guide frame, the bracket is welded on the side wall of the protective cylinder, so that the protective cylinder is supported on the guide frame, and the crawler crane is loose from the hook. And hoisting a second section of steel protecting cylinder, and welding and lengthening after the two sections of protecting cylinders are aligned. The crawler crane lifts the steel protection cylinder slightly, the bracket on the first section of steel protection cylinder is cut off by oxygen cutting, the lengthened steel protection cylinder is placed downwards, and after the steel protection cylinder is lengthened to the designed length, the steel protection cylinder is placed downwards to the riverbed.
5. Adjusting the position of the steel casing
After the steel protecting cylinder is connected and put in place, a theodolite is used for observing whether the steel protecting cylinder meets the requirements of construction specifications or not from two vertical angle directions, and the position of the steel protecting cylinder is adjusted by using a crawler crane, a chain block and the like.
6. Inserting beating steel protective cylinder
Before inserting and beating, an internal support is arranged 1m below the top of the pile casing to prevent the vibration clamp from causing radial plastic deformation of the pile casing. When each section of steel casing is inserted and beaten in place, the inner support needs to be timely released, and a safety rope needs to be tied to the inner support when the inner support is released.
And inserting and beating the steel casing by adopting a 120-type vibration hammer. The final penetration depth of the steel pile casing is determined by a double-control method of the design elevation of the bottom of the pile casing and the final penetration. And stopping inserting and beating when the steel pile casing does not reach the designed elevation of the pile casing bottom and the final penetration reaches 3-5 cm per minute.
7. Steel casing parallel connection installation
After the steel casing is inserted and beaten in place, the casing parallel connection can be installed, and the height of the casing parallel connection welding line is not less than 8 mm. 8. Measurement control scheme
And when the steel casing is inserted and driven, determining the central position of the steel casing by using a total station, and then making a guide pile on the platform. When the steel casing is placed downwards, the perpendicularity of the casing is checked by adopting a vertical ball and a horizontal ruler, the elevations of four corners of the top of the casing are controlled by a level gauge, and the inclination rate of the casing is converted through the height difference of the top of the casing. And after the pile casing is in place, rechecking the plane position of the pile casing by using a total station. In the inserting and beating process of the pile casing, the perpendicularity and the plane deviation of the pile casing are monitored, and problems are found and corrected in time.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A quick construction method of a steel trestle is characterized by comprising the following steps:
s1, firstly, inserting and driving steel pipe piles as pile foundations and pier columns by utilizing a crawler crane and a vibration hammer, and welding parallel channel steel among the steel pipe piles to form a whole;
s2, mounting pile top longitudinal beams, cross beams and Bailey beams, laying transverse distribution beams and welding firmly;
s3, paving the longitudinal distribution beam again, paving a steel plate with the thickness of 10mm, and welding the steel plate and the distribution beam firmly to form a bridge deck;
and S4, finally arranging a guard rail and a safety protection facility.
2. The rapid construction method of the steel trestle according to claim 1, which is characterized in that: the steel pipe pile construction of S1 includes the steps of:
s21, advancing all materials in advance, and preparing before construction;
s22, inserting and driving a steel pipe pile foundation by a crawler crane, wherein the steel pipe pile inserting and driving adopts a vibration hammer vibration driving method of the crawler crane of 50T, and after the crawler crane is in place, the steel pipe pile is welded and formed on the ground at one time according to the depth of water; the method comprises the following steps of (1) welding and inserting and driving the steel pipe pile, wherein a 45-degree groove treatment is performed on an interface at the butt joint of the steel pipes, the lengthening adopts equal-length annular welding, the surplus height of a welding seam is not less than 2mm, and the butt joint misalignment size is not more than 3 mm; for larger butt joint misalignment, a reinforced steel plate is wrapped outside and peripheral fillet weld is welded for reinforcement treatment; the inserting and driving of the steel pipe piles are propelled from the bank to the river center; after the plane position and the verticality of the steel pipe pile are adjusted, a hammer is pressed in by depending on the weight of the steel pipe pile and the weight of the pile hammer, the pile position and the inclination are measured and retested, and the hammer is hammered after the deviation meets the requirement; using a 50t crawler crane to match with a vibration hammer to drive the steel pipe pile, continuously detecting the perpendicularity between the pile position and the pile in the vibration process, and timely correcting the found deviation; after the sleeper beam, the Bailey beam and the bridge deck are laid on the pile top, the 50T crawler crane moves forwards to carry out inserting and driving of the next span steel pipe pile; determining the final penetration depth of the steel pipe pile by adopting a method of double control of the designed elevation of the pile bottom and the final penetration degree, and ensuring that the embedding depth of the steel pipe pile is not less than 5 m; and stopping piling when the steel pipe pile does not reach the designed elevation of the pile bottom and the final penetration reaches 3-5 cm per minute.
3. The rapid construction method of the steel trestle according to claim 2, which is characterized in that: the steel pipe pile connection and pile top beam construction in the S1 process comprises the following steps:
after the steel pipe piles are driven and inserted, the connection among the steel pipe piles and the construction of a pile top sleeper beam can be carried out; the materials required by the trestle are all stacked at a preset position; determining the blanking length of channel steel and I-shaped steel according to the distance of the steel pipe piles which are inserted and driven and the designed connection length; the connection between piles and the installation of a pile top sleeper beam are manually operated on an operation platform, the operation platform adopts 3 pieces of 20b I-steel with the length of 1 meter at the position of a steel pipe column, a 5cm thick wood plate is laid on the I-steel to form a walking platform, and railings are welded into a 1 multiplied by 1.5 multiplied by 5m cubic platform by adopting phi 48 multiplied by 3mm steel pipes; the whole platform is suspended on the pile top by using 2 hand hoists of 3t, and the crawler cranes are installed in a matching way; after the connection among the piles and the installation of the sleeper beam at the top of the pile are finished, removing the operating platform by using a crawler crane for preparing for the next pier stud;
the connection between piles and the cross brace must be fully welded with the steel pipe pile body, the operation platform is lifted to a proper height after welding is completed, a gas cutting gun is used for cutting off redundant steel pipe piles along the pile head elevation determined by measurement, and a gap of a pile top sleeper beam is reserved at the pipe orifice of each steel pipe pile, so that the welding of the I-shaped steel of the pile top sleeper beam and the steel pipe pile is facilitated.
4. The rapid construction method of the steel trestle according to claim 3, which is characterized in that: the assembling and erecting of the Bailey beam in the S2 comprises the following steps:
s32, assembling the Bailey beams at a preset position, lifting the pre-installed Bailey beams by using a bolster wood below, placing the Bailey beams behind the assembled Bailey beams and forming a straight line with the Bailey beams, using a steel stick to penetrate through a gusset plate to lift the front ends of the Bailey beams, inserting pin bolts after aligning lower chord pin holes, then lifting the rear ends of the Bailey beams, inserting upper chord pin bolts and arranging safety bolts; connecting the vertical support frame and the Bailey sheet into a whole by using a support frame bolt, and installing one Bailey sheet at the joint position of each section; in order to ensure the rigidity of the beam, the Bailey pieces, the reinforcing chord members and the horizontal support frame are connected in a staggered manner by adopting joints; the Bailey assembling is carried out according to groups, each group of Bailey is 12m long, and Bailey pieces are connected by connecting sheets;
s33, erecting the Bailey beams, and combining the lifting capacity of a 50t crawler crane, so that the single-span 2-row Bailey beams are erected as a group; firstly, carrying out measurement lofting on a top cross beam of a lower structure, and determining the accurate position of the bailey truss; secondly, the assembled Bailey main truss sheets are transported to the back of a crawler crane; dividing every two Bailey sheets into one group, firstly installing one group of Bailey sheets on a 50t crawler crane, firmly binding the Bailey sheets on a cross beam after the Bailey sheets are accurately positioned, then welding a limiting stopper, then installing the other group of Bailey sheets, simultaneously connecting the Bailey sheets with the installed group of Bailey sheets by using Bailey sheet 20 channel steel bridging, and so on to finish the erection of the whole span Bailey beam; and finally, two wind-resistant pull rods are arranged at the bottom of each span, two cross braces are arranged in the vertical plane, and the in-plane rigidity of the main beam is improved.
5. The rapid construction method of the steel trestle according to claim 4, which is characterized in that: the installation of the transverse distribution beam in the S2 comprises the following steps:
manually matching a 50t crawler crane to install transverse distribution beams of a trestle bridge deck and a steel platform deck, and fixing the trestle bridge with Bailey sheets by using a beam clamp after installing an upper beam of the Bailey beam of the trestle; the supporting point of the cross beam must be placed at the supporting point position of the vertical chord or the diamond chord of the Bailey beam to meet the stress requirement;
laying an upper beam and a longitudinal distribution beam of the Bailey beam according to a designed interval, hoisting the longitudinal distribution beam by using a crawler crane, installing and positioning the longitudinal distribution beam in a manual matching manner, welding the longitudinal distribution beam and the upper beam of the Bailey beam, and connecting and fixing each distribution beam by using a steel bar with the diameter of 28mm at the lower opening of the distribution beam.
6. The rapid construction method of the steel trestle according to claim 5, which is characterized in that: and in the bridge deck construction in the S3, hoisting a 10mm steel plate to the distribution beam by using a crawler crane, welding and fixing the steel plate and the distribution beam, and arranging an expansion joint of 1cm on each panel.
7. The rapid construction method of the steel trestle according to claim 6, which is characterized in that: the connection between the trestle and the steel platform in the S3 comprises the following steps:
firstly, positioning a steel wire rope setting position on a steel pipe pile by using an operating platform for installing inter-pile connection, and welding a circle of steel bar with the diameter of 28mm on the steel pipe pile at the set position to prevent the steel wire rope from sliding downwards after being bound; the steel wire rope is tightened, 4 rope clamps are arranged at two ends of the steel wire rope respectively, and the screws are screwed tightly.
8. The rapid construction method of the steel trestle according to claim 4, which is characterized in that: the method further comprises the steel pile casing construction, wherein the steel pile casing construction comprises the following steps:
s41, processing a steel pile casing, wherein the size of the steel pile casing is determined according to the diameter of the pile, and a steel plate with the thickness of 10mm and a reinforcing hoop with the width of 30cm are welded on each 2m of the steel pile casing; in addition, a 50cm edge is arranged at the bottom of the protective cylinder, and a 14mm steel plate is adopted for reinforcement treatment to prevent the bottom of the pipe from being rolled up when drilling is performed; the design length of the steel casing is determined according to the actual geological condition, the length of the steel casing is inserted into the covering layer as far as possible, and slurry leakage and hole collapse are avoided in the pile foundation construction process; determining that the length of each section of steel casing does not exceed 6m according to the lifting capacity, the height of a lifting hook, the height of a drilling platform and the like of the crawler crane;
s42, manufacturing and installing a guide frame, wherein the guide frame is processed by section steel, and the top of the positioning frame is respectively provided with four limiting devices; determining the accurate position of each pile guide frame on the platform according to the pile position control point and the geometric dimension of the outer frame of the guide frame; hoisting the manufactured guide frame to a platform by using a crawler crane, and accurately positioning the guide frame on the platform at the pile position of the pile casing to be lowered; during installation, a leveling rod is placed on a supporting beam of the guide frame, a steel plate is arranged at the contact position of the supporting beam and the platform distribution beam in a cushioning mode to adjust the flatness of the supporting beam, and meanwhile, a level meter is used for checking; after the plane position and the vertical verticality of the guide frame are adjusted, the accuracy of the guide frame is checked by using a total station, the support beam of the guide frame is firmly connected with the platform distribution beam, and the lower opening of the guide frame and the adjacent steel pipe pile are pulled and fixed by using a chain pulley;
s43, positioning and detecting the steel casing, lifting the steel casing in place by using a 50t crawler crane, then accurately positioning the steel casing, and then sinking the steel casing to a designed elevation by using a vibration hammer;
s44, lengthening the steel protecting cylinders, wherein the length of each section of steel protecting cylinder is not more than 5m, the first section of steel protecting cylinder is hung into the guide frame by a crawler crane, and the steel protecting cylinders are put down along the inner wall of the guide frame; when the upper opening of the protective cylinder is placed to be 0.4m away from the upper part of the guide frame, a bracket is welded on the side wall of the protective cylinder, so that the protective cylinder is supported on the guide frame, and the crawler crane loosens the hook; hoisting a second section of steel casing, aligning two sections of casing, and welding and lengthening; slightly hoisting the steel casing by the crawler crane, cutting off the bracket on the first section of steel casing by oxygen cutting, lowering the lengthened steel casing to a designed length, and lowering the steel casing to the river bed;
s45, adjusting the position of the steel casing, lengthening the steel casing and putting the steel casing in place, observing whether the steel casing meets the requirements of construction specifications or not from two vertical angle directions by using a theodolite, and adjusting the position of the steel casing by using a crawler crane, a chain block and the like;
s46, inserting and beating the steel pile casing, wherein an internal support is arranged 1m below the top of the pile casing before inserting and beating, and the vibration clamp is prevented from enabling the pile casing to generate radial plastic deformation; when each section of steel casing is inserted and beaten in place, the inner support needs to be timely released, and a safety rope is tied to the inner support when the inner support is released; inserting and beating a steel casing by adopting a 120-type vibration hammer; the final penetration depth of the steel pile casing is determined by a double-control method of the design elevation of the bottom of the pile casing and the final penetration; stopping inserting and beating when the steel pile casing does not reach the designed elevation of the pile casing bottom and the final penetration reaches 3-5 cm per minute;
s47, mounting the steel casing in a parallel connection mode, and mounting the steel casing in a parallel connection mode after the steel casing is inserted and beaten in place, wherein the height of a welding seam of the steel casing in the parallel connection mode is not less than 8 mm;
s48, when the steel casing is inserted and driven, the center position of the steel casing is determined by using a total station, and then a guide pile is made on the platform; when the steel casing is lowered, a vertical ball and a horizontal ruler are adopted to check the verticality of the casing, meanwhile, the elevations of four corners of the top of the casing are controlled by a level gauge, and the inclination rate of the casing is converted through the height difference of the top of the casing; after the pile casing is in place, rechecking the plane position of the pile casing by using a total station; in the inserting and beating process of the pile casing, the perpendicularity and the plane deviation of the pile casing are monitored, and problems are found and corrected in time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010713694.9A CN111851302A (en) | 2020-07-22 | 2020-07-22 | Rapid construction method of steel trestle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010713694.9A CN111851302A (en) | 2020-07-22 | 2020-07-22 | Rapid construction method of steel trestle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111851302A true CN111851302A (en) | 2020-10-30 |
Family
ID=72950958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010713694.9A Pending CN111851302A (en) | 2020-07-22 | 2020-07-22 | Rapid construction method of steel trestle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111851302A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047155A (en) * | 2021-03-24 | 2021-06-29 | 中铁十六局集团有限公司 | Bridge engineering construction method |
| CN113106873A (en) * | 2021-04-14 | 2021-07-13 | 中铁二局第一工程有限公司 | Standardized construction system of large-span steel trestle |
| CN113356065A (en) * | 2021-06-11 | 2021-09-07 | 中铁二十局集团第三工程有限公司 | Construction method for main trestle in deep water area |
| CN114411721A (en) * | 2022-03-01 | 2022-04-29 | 中国铁建大桥工程局集团有限公司 | Replacement construction method for steel trestle with steel pipe piles anchored after first forming bridge |
| CN114908673A (en) * | 2022-05-16 | 2022-08-16 | 中铁四局集团第一工程有限公司 | Construction method of deepwater foundation trestle and drilling platform |
| CN116289563A (en) * | 2022-12-30 | 2023-06-23 | 保利长大工程有限公司 | Bailey beam installation equipment and installation method for trestle system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU592910A1 (en) * | 1976-06-16 | 1978-02-15 | Всесоюзный Научно-Исследовательский Институт Физической Культуры | Trestle overpass |
| CN106284089A (en) * | 2016-08-31 | 2017-01-04 | 中铁大桥局集团有限公司 | A kind of steel trestle rapid constructing method |
| CN107119569A (en) * | 2017-05-19 | 2017-09-01 | 中铁十六局集团第五工程有限公司 | A kind of construction method of the oblique rock geology construction make-shift bridge of deep water shallow overburden |
| CN108103939A (en) * | 2017-12-08 | 2018-06-01 | 中交路桥北方工程有限公司 | Oblique section steel trestle construction composite reinforcement mode and construction technology |
| CN110158582A (en) * | 2019-06-14 | 2019-08-23 | 中铁八局集团有限公司 | A method of trestle steel pipe pile is set on intectate riverbed |
| CN110924307A (en) * | 2019-11-28 | 2020-03-27 | 中铁广州工程局集团桥梁工程有限公司 | Trestle construction method for bare rock geology |
-
2020
- 2020-07-22 CN CN202010713694.9A patent/CN111851302A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU592910A1 (en) * | 1976-06-16 | 1978-02-15 | Всесоюзный Научно-Исследовательский Институт Физической Культуры | Trestle overpass |
| CN106284089A (en) * | 2016-08-31 | 2017-01-04 | 中铁大桥局集团有限公司 | A kind of steel trestle rapid constructing method |
| CN107119569A (en) * | 2017-05-19 | 2017-09-01 | 中铁十六局集团第五工程有限公司 | A kind of construction method of the oblique rock geology construction make-shift bridge of deep water shallow overburden |
| CN108103939A (en) * | 2017-12-08 | 2018-06-01 | 中交路桥北方工程有限公司 | Oblique section steel trestle construction composite reinforcement mode and construction technology |
| CN110158582A (en) * | 2019-06-14 | 2019-08-23 | 中铁八局集团有限公司 | A method of trestle steel pipe pile is set on intectate riverbed |
| CN110924307A (en) * | 2019-11-28 | 2020-03-27 | 中铁广州工程局集团桥梁工程有限公司 | Trestle construction method for bare rock geology |
Non-Patent Citations (3)
| Title |
|---|
| 叶和洲、江群龙、郑益川: "长周期涌浪浅覆盖地层无掩护海域钢管桩施工技术", 《中国水运》 * |
| 王宇平、易廷梅、胡鹤、梁朝勇: "长沙湘府路湘江大桥水中基础施工", 《中外公路》 * |
| 肖华: "深水急流钢管栈桥设计与施工", 《现代商贸工业》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047155A (en) * | 2021-03-24 | 2021-06-29 | 中铁十六局集团有限公司 | Bridge engineering construction method |
| CN113106873A (en) * | 2021-04-14 | 2021-07-13 | 中铁二局第一工程有限公司 | Standardized construction system of large-span steel trestle |
| CN113356065A (en) * | 2021-06-11 | 2021-09-07 | 中铁二十局集团第三工程有限公司 | Construction method for main trestle in deep water area |
| CN114411721A (en) * | 2022-03-01 | 2022-04-29 | 中国铁建大桥工程局集团有限公司 | Replacement construction method for steel trestle with steel pipe piles anchored after first forming bridge |
| CN114411721B (en) * | 2022-03-01 | 2024-05-24 | 中国铁建大桥工程局集团有限公司 | Replacement construction method for steel trestle bridge forming and then anchoring steel pipe pile |
| CN114908673A (en) * | 2022-05-16 | 2022-08-16 | 中铁四局集团第一工程有限公司 | Construction method of deepwater foundation trestle and drilling platform |
| CN114908673B (en) * | 2022-05-16 | 2023-10-20 | 中铁四局集团第一工程有限公司 | Deep water foundation trestle and drilling platform construction method |
| CN116289563A (en) * | 2022-12-30 | 2023-06-23 | 保利长大工程有限公司 | Bailey beam installation equipment and installation method for trestle system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111851302A (en) | Rapid construction method of steel trestle | |
| CN101265690B (en) | Method for dismantling arch bridge for protection | |
| CN109706939B (en) | Deep foundation pit prestress combined steel support and construction method | |
| CN105649332A (en) | Building beam and slab construction method | |
| CN108677962B (en) | Subway entrance and exit segment foundation pit formwork installing and dismantling method | |
| CN109457615A (en) | A kind of construction method of installation of abnormity bowstring arch bridge arch ring | |
| CN103184722B (en) | Large-span double-layer Bailey truss structure and construction method thereof | |
| CN110344335B (en) | Method for constructing steel trestle, initial platform and cofferdam in bridge construction process | |
| CN104452597A (en) | Supporting system for construction of super-long water pier prestressed cap beam | |
| CN111335171A (en) | Construction method of steel trestle | |
| CN110748701B (en) | Pipe-jacking working pit construction method | |
| CN109056710B (en) | Hard stratum steel pipe pile and construction method thereof | |
| CN108797323B (en) | Steel trestle suitable for hard stratum | |
| CN106284366A (en) | External pulling type Larsen steel sheet pile reinforcement means | |
| CN214459689U (en) | Cast-in-place box girder support of weak soil foundation | |
| CN110029653B (en) | Method for treating steel pipe pile foundation of riprap seabed foundation | |
| CN115387207A (en) | Shallow covering layer steel-concrete composite pile pier structure and construction method | |
| CN213507989U (en) | Deepwater steel trestle capable of being constructed quickly | |
| CN216515083U (en) | High bridge cushion cap structure of filling | |
| CN211872669U (en) | Uneven jacking system of current bridge superstructure | |
| CN112942809A (en) | Combined template assembling method capable of realizing mechanical construction | |
| CN111663779A (en) | Closed construction method for metallurgical industry factory building | |
| CN114934433A (en) | Stirrup pile foundation steel trestle structure for assisting bridge construction and construction process thereof | |
| CN204343168U (en) | Pier prestressed cap beam with extra length Construction Supporting System in water | |
| CN109024290A (en) | A kind of bowl fastening type full framing and its construction method for continuous beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201030 |
|
| RJ01 | Rejection of invention patent application after publication |