CN109629569B - Steel pipe pile guide frame structure and construction method - Google Patents
Steel pipe pile guide frame structure and construction method Download PDFInfo
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- CN109629569B CN109629569B CN201910025176.5A CN201910025176A CN109629569B CN 109629569 B CN109629569 B CN 109629569B CN 201910025176 A CN201910025176 A CN 201910025176A CN 109629569 B CN109629569 B CN 109629569B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 89
- 239000010959 steel Substances 0.000 title claims abstract description 89
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000011900 installation process Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000004642 transportation engineering Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a steel pipe pile guide frame structure and a construction method, which are used for guiding the steel pipe pile installation process of trestle, and comprise the following steps: two groups of support beams longitudinally arranged along the trestle; at least one cross beam transversely fixed on the top surfaces of the two groups of support beams along the trestle, thereby forming an integral structure; at least two pairs of guide frames, wherein each pair of guide frames are respectively arranged on two groups of support beams so as to guide the steel pipe pile lowering process; the support legs are symmetrically arranged on the bottom surfaces of the two groups of support beams, and the support legs are supported on the forefront main beam of the constructed trestle; the height of each pair of supporting legs is adjustable; the rear end of the integral structure along the longitudinal direction of the trestle is hinged to two bailey frame groups at the rear side of the main beam of the trestle, and the integral structure can be horizontal by adjusting the heights of a pair of supporting legs. The invention has the advantages of being suitable for the conditions of no-mask open sea protection, long-period strong surge and the like, and can be widely applied to the technical field of water transport engineering construction.
Description
Technical Field
The invention relates to the technical field of water transport engineering construction. More particularly, the invention relates to a steel pipe pile guide frame structure and a construction method.
Background
When the steel pipe pile piles, in order to ensure the coordinates and the perpendicularity of the pile body, a guide frame is required to limit the steel pipe pile, and for the construction of the steel pipe pile on water, the conventional guide frame mainly comprises three types of self-belt type pile driving ships, assembly type pile driving ships and simple movable pile driving ships. The pile driving ship inserts steel pipe piles through a mode of being fixed with the ship body of the pile driving ship, the assembled guide frame piles on the pile driving platform which is continuously assembled and disassembled in a circulating mode, and the simple movable guide frame piles through independent steel pipe piles. The guide frame of the piling ship has the defects that the piling ship is easily influenced by wind waves and water depth due to integration with the ship body, the construction precision is difficult to ensure, and the piling ship is not suitable for construction in a water area with shallower water depth or reef. The assembled guide frame has the defect that the platform is easy to link during piling because the assembled guide frame is fixed on one side of the piling platform through the tripod by bolts, and the construction precision and the stability of the piling platform are both influenced. The simple movable guide frame has the defects that an auxiliary pile needs to be additionally applied, and the work efficiency is relatively low.
The total length of the steel trestle of the Pakistan medium-voltage Hu Bu wharf is 1600m, the bridge width is 8m, the total number of steel pipe piles reaches 600, no soft covering layer exists in the construction sea area, the sea bed is covered with reefs with uneven height, the surge and the wind speed are large in the monsoon period, the influence on the hoisting of hoisting equipment and the construction of the steel pipe pile foundation is large, and the perpendicularity of the pile foundation is difficult to guarantee.
Disclosure of Invention
The invention aims to provide a steel pipe pile guide frame structure and a construction method suitable for the conditions of no-mask open sea protection and long-period strong surge.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a steel pipe pile guide frame structure for guiding a steel pipe pile installation process of a trestle, comprising:
two groups of support beams longitudinally arranged along the trestle;
at least one cross beam transversely fixed on the top surfaces of the two groups of support beams along the trestle, thereby forming an integral structure;
at least two pairs of guide frames, wherein each pair of guide frames are respectively arranged on two groups of support beams so as to guide the steel pipe pile lowering process;
the support legs are symmetrically arranged on the bottom surfaces of the two groups of support beams, and the support legs are supported on the forefront main beam of the constructed trestle; the height of each pair of supporting legs is adjustable;
the rear end of the integral structure along the longitudinal direction of the trestle is hinged to two bailey frame groups at the rear side of the main beam of the trestle, and the integral structure can be horizontal by adjusting the heights of a pair of supporting legs.
Preferably, each set of support beams comprises a pair of main beams; each bailey frame set comprises a pair of bailey frames;
the pair of main beams are erected on the outer sides of the pair of bailey frames, and a bolt transversely penetrates through the main beams, the pair of bailey frames and the other main beam in sequence, so that the pair of main beams are hinged with the pair of bailey frames.
Preferably, the guide frames comprise a pair of guide plates which are horizontally arranged and arranged up and down, each guide plate is provided with a guide hole which is vertically penetrated and is positioned between a pair of main beams on the same side; a plurality of vertical connecting rods are connected between the pair of guide plates;
each pair of guide frames is fixed on the two groups of support beams through a pair of transverse first cross bars and a pair of transverse second cross bars;
the pair of first cross bars are fixed on the top surfaces of the two groups of support beams, and the pair of second cross bars are fixed on the bottom surfaces of the two groups of support beams and are positioned right below the pair of first cross bars;
for any guide frame, the upper guide plate of the pair of guide plates is fixed on the pair of first cross beams, and the lower guide plate is fixed on the pair of second cross beams.
Preferably, the support leg includes:
the fixing plate is vertically arranged, and the upper end of the fixing plate is fixed with the bottom surface of the supporting beam; two opposite sides of the lower end of the fixed plate extend outwards to form a horizontal part;
a support plate horizontally disposed right below the fixing plate; the support plate is fixed with a plurality of first screw rods opposite to two sides of the horizontal part, the middle parts of the support plate are connected with a first nut in a threaded mode, and the upper ends of the first screw rods vertically penetrate through the upper ends of the opposite horizontal parts and are connected with a second nut in a threaded mode.
Preferably, the steel pipe pile guide frame structure further comprises a supporting frame, wherein the middle parts of the supporting frames are crossed and fixed by a pair of diagonal braces to form a cross-like shape, and four ends of the supporting frame are respectively fixed between two groups of supporting beams so as to increase the strength of the integral structure.
The construction method of the steel pipe pile guide frame structure comprises the following steps:
s1, hoisting the integral structure to the forefront of a trestle, and supporting a beam on two bailey frame groups at the rear side of a main beam of the trestle;
s2, a pair of inserting pins are respectively inserted into reserved holes of a main beam at one side, upper chords and web members of two bailey frames at the rear side of a main beam of a trestle, and post-anchor fixing is completed;
s3, adjusting the heights of the pair of supporting legs to enable the pair of supporting legs to be supported on the main cross beam of the trestle and enable the whole structure to be horizontal;
s4, installing a steel bridge deck closest to the cross beam on the two bailey frame groups;
s5, constructing on the steel bridge deck closest to the cross beam, and inserting steel pipe piles by utilizing the guide frame;
s6, dismantling a pair of bolts, hoisting and removing the integral structure;
s7, installing a new trestle main beam and two new bailey frame groups on the steel pipe pile;
s8, repeating the steps S1-S7 on the new trestle main beam and the two bailey frame groups;
and S9, repeating the steps S7-S8 until the construction of the trestle is completed.
Preferably, when the integral structure is lifted, lifting points are arranged at the intersection points of the two groups of supporting beams and the supporting frame, and four-point horizontal lifting is adopted.
Preferably, the cross beams are transversely fixed on the top surfaces of the two groups of support beams along the trestle by a pair of fixing devices, the top surfaces of the cross beams are recessed downwards to form a square groove which penetrates through up and down, the lower surfaces of the cross beams are recessed inwards to form square clamping grooves which are uniformly arranged at intervals along the length direction of the cross beams and are along the longitudinal direction of the trestle, and the middle parts of the square clamping grooves are penetrated through the square grooves;
the fixing device includes:
the fixed block is fixed on the upper surfaces of a pair of main beams of a group of supporting beams and connects the two main beams into a whole;
the clamping plate is formed into an I-shaped plate shape by a web plate and a pair of square clamping rods fixed at the upper end and the lower end of the web plate, the clamping rods fixed at the lower end of the web plate of the clamping plate are fixed on the upper surface of the fixed block, the web plate of the clamping plate vertically penetrates through the cross beam, and the height of the web plate is larger than that of the cross beam; the clamping rod is matched with the square clamping groove.
Preferably, the first cross bar and the second cross bar have the same structure;
the first cross bar comprises, in order along the transverse direction: the first sleeve rod, the second screw rod and the second sleeve rod; the first loop bar and the second loop bar have the same structure, are both fixed on corresponding support beams, and both ends of the first loop bar and the second loop bar protrude from the corresponding support beams;
the first loop bar is square bar-shaped and is provided with a screw hole which is transversely penetrated; the external threads at the two ends of the second screw rod are opposite in rotation direction;
and two ends of the second screw rod are respectively in screw holes of the first loop bar and the second loop bar in a screwed manner.
The invention at least comprises the following beneficial effects:
the steel pipe pile guide frame structure is attached to the upper structure of the constructed trestle, so that the steel pipe pile guide frame structure is prevented from contacting the water surface, and the stability is high; the invention is provided with 4 guide frames, 4 steel pipe piles can be applied at one time at the brake pier of the steel trestle, and the applicability is strong; the pair of supporting legs are utilized for supporting and adjusting, so that the fine adjustment of the levelness of the whole structure can be realized, and the accuracy is high; the whole structure adopts the bolt for anchoring, has simple structure, definite stress, convenient assembly and disassembly and high work efficiency; the integral structure is assembled by section steel, can be obtained locally and processed by self, is convenient to recycle after finishing, has low cost and good economic benefit, and well solves the problem of construction of the steel pipe pile under the conditions of no shielding in open sea and long-period strong surge.
1. The invention is attached to the upper structure of the steel trestle, avoids contact with the water surface, and ensures the stability of the guide frame.
2. The invention is provided with 4 guide openings, so that 4 steel pipe piles can be applied at one time at the brake pier of the steel trestle.
3. According to the invention, the support height is adjusted by utilizing the pair of support legs, so that the horizontal accurate fine adjustment of the integral structure can be realized, and the construction precision is ensured.
4. The invention adopts the bolt to anchor and hinge the whole structure on the constructed bailey frame, has simple structure, definite stress, convenient assembly and disassembly and improved work efficiency.
5. The invention adopts the profile steel for assembly, can obtain materials locally and process by oneself, is convenient for recycling after finishing, and has low cost and good economic benefit.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of the construction state of the present invention;
FIG. 2 is a perspective view of the structure of the present invention;
FIG. 3 is a schematic view of the steel deck of the present invention shown mounted closest to the cross beam;
FIG. 4 is a schematic view of the structure of the support leg according to the present invention;
FIG. 5 is a schematic view of the support leg of the present invention supported on the main beam of the trestle;
FIG. 6 is a schematic diagram of the connection relationship between the cross beam, the main beam, the fixing block and the clamping block according to the present invention;
fig. 7 is a schematic view of a square clamping groove on the lower surface of the beam according to the invention.
Reference numerals illustrate: 1. the support beam, 2, the crossbeam, 3, the leading truck, 4, the supporting leg, 5, landing stage main beam, 6, bailey frame, 7, girder, 8, the deflector, 9, the connecting rod, 10, the bolt, 11, first horizontal pole, 12, the second horizontal pole, 13, the fixed plate, 14, the backup pad, 15, first screw rod, 16, first nut, 17, second nut, 18, the support frame, 19, the steel bridge panel closest to the crossbeam, 20, the fixed block, 21, the cardboard, 22, square recess, 23, square draw-in groove, 24, first loop bar, 25, second screw rod, 26, second loop bar, 27, the web of cardboard, 28, the clip bar, 29, horizontal part, 30, railing.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It should be noted that the experimental methods described in the following embodiments, unless otherwise specified, are all conventional methods, and the reagents and materials, unless otherwise specified, are all commercially available; in the description of the present invention, the terms "transverse", "longitudinal of trestle", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. refer to the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
As shown in fig. 1 to 7, the present invention provides a steel pipe pile guide frame 3 structure for guiding a steel pipe pile installation process of a trestle, comprising:
two sets of support beams 1 longitudinally arranged along the trestle;
at least one cross beam 2 transversely fixed to the top surfaces of the two sets of support beams 1 along the trestle, so as to form an integral structure;
at least two pairs of guide frames 3, wherein each pair of guide frames 3 are arranged on two groups of support beams 1 respectively so as to guide the steel pipe pile lowering process;
a pair of support legs 4 symmetrically arranged on the bottom surfaces of the two sets of support beams 1, the support legs 4 being supported on the forefront main beam 5 of the constructed trestle; the height of each pair of support legs 4 is adjustable;
the rear end of the integral structure in the longitudinal direction of the trestle is hinged to two bailey frames 6 on the rear side of the trestle main beam 5, and the integral structure can be horizontal by adjusting the heights of a pair of supporting legs 4.
In the technical scheme, during construction, firstly, a crane is used for hoisting the integral structure, two groups of supporting beams 1 are inserted between the installed bailey frames 6, the cross beams 2 are temporarily arranged on the bailey frames 6, then, bolts 10 are inserted behind the integral structure, the integral structure is anchored, and finally, a pair of supporting legs 4 are adjusted to be supported on the main cross beams 5 of the steel trestle, and the integral structure is horizontal. After the guide frame 3 is installed, a steel bridge deck close to the guide frame 3 can be installed, next construction of a steel pipe pile is performed, and the steel pipe pile is guided by the guide frame 3.
The railing 30 can also be arranged, and is formed by welding scaffold tubes, and the railing is arranged above the supporting beam 1 at intervals in parallel along the longitudinal direction of the trestle, and is welded or connected with the supporting beam 1 through bolts.
On the paved trestle, the steel pipe pile is positioned by using the invention, the pile hammer is lifted by adopting the crawler crane, and the steel pipe pile is continuously constructed.
In another embodiment, each set of support beams 1 comprises a pair of main beams 7; each set of bailey frames 6 comprises a pair of bailey frames 6;
a pair of girders 7 are installed at the outer sides of the pair of bailey frames 6, and a bolt 10 transversely penetrates through the pair of girders 7, the pair of bailey frames 6 and the other girder 7 in sequence, so that the pair of girders 7 are hinged with the pair of bailey frames 6.
In the technical scheme, two pairs of main beams 7 and cross beams 2 are formed by section steel; the two pairs of main beams 7 are horizontally and longitudinally arranged in parallel, the same position of the web plate of the tail part of each section steel is provided with a bolt 10 preformed hole, and the two pairs of main beams 7 and the cross beams 2 are welded or connected by bolts or in other detachable connection modes. The pair of main beams 7 are hinged with the pair of bailey frames 6 in a mode of penetrating into reserved holes through bolts 10; the bolts 10 are steel and are respectively and horizontally arranged between webs of the left and right pairs of girders 7 and are in contact connection with the longitudinal girders 7 and the trestle bailey frames 6 in a penetrating manner;
when both pairs of main beams are hinged with the corresponding pair of bailey frames, a pair of pins are positioned on the same straight line, as shown in figure 1.
In another technical scheme, the guide frames 3 comprise a pair of guide plates 8 which are horizontally arranged and vertically arranged, and each guide plate is provided with a vertically through guide hole which is positioned between a pair of main beams 7 on the same side; a plurality of vertical connecting rods 9 are connected between the pair of guide plates 8;
each pair of guide frames 3 is fixed on the two groups of support beams 1 through a pair of transverse first cross bars 11 and a pair of transverse second cross bars 12;
a pair of first crossbars 11 are fixed on the top surfaces of the two groups of support beams 1, and a pair of second crossbars 12 are fixed on the bottom surfaces of the two groups of support beams 1 and are positioned right below the pair of first crossbars 11;
in any one of the guide frames 3, the upper guide plate 8 of the pair of guide plates 8 is fixed to the pair of first cross bars 11, and the lower guide plate 8 is fixed to the pair of second cross bars 2.
In the technical scheme, the diameter of the guide hole is slightly larger than that of the steel pipe pile. As shown in fig. 1, 4 guide frames are provided so that 4 steel pipe piles can be guided at the same time during the driving.
In another embodiment, the support leg 4 comprises:
a fixing plate 13 vertically disposed and having an upper end fixed to a bottom surface of the support beam 1; opposite sides of the lower end of the fixed plate 13 extend outwards to form a horizontal part 28;
a support plate 14 horizontally disposed right under the fixing plate 13; a plurality of first screws 15 are fixed on both sides of the support plate 14 opposite to the pair of horizontal portions 28, the middle portions of the first screws are respectively screwed with a first nut 16, and the upper ends of the first screws 15 vertically penetrate through the upper ends of the opposite horizontal portions 28 and are respectively screwed with a second nut 17.
In the technical scheme, the upper end of the fixing plate is welded or detachably fixed on the supporting beam, and the length of the supporting leg is adjusted by adjusting the height positions of the first nut and the second nut, so that the levelness of the integral structure is adjusted.
In another technical scheme, the steel pipe pile guide frame 3 structure further comprises a supporting frame 18, wherein the middle parts of the supporting frames are crossed and fixed by a pair of diagonal braces to form a cross shape, and four ends of the supporting frame 18 are respectively fixed between the two groups of supporting beams 1 so as to increase the strength of the whole structure.
In this embodiment, the support frame 18 may make the overall structure more stable.
The construction method of the steel pipe pile guide frame 3 structure comprises the following steps:
s1, hoisting the integral structure to the forefront of a trestle, and supporting a beam 2 on two bailey frame groups at the rear side of a main beam of the trestle;
s2, a pair of bolts 10 are respectively inserted into reserved holes of a main beam 7 at one side and between upper chords and web members of two bailey frames 6 at the rear side of a main beam 5 of a trestle, and then rear anchor fixing is completed;
s3, adjusting the heights of the pair of support legs 4 so that the pair of support legs 4 are supported on the trestle main cross beam 5 and the whole structure is horizontal;
s4, installing a steel bridge deck 19 closest to the cross beam on the two bailey frame 6 groups;
s5, constructing on the steel bridge deck closest to the cross beam 2, and inserting steel pipe piles by using the guide frame 3;
s6, dismantling a pair of bolts 10, lifting and removing the integral structure;
s7, installing a new trestle main beam 5 and new two bailey frame 6 groups on the steel pipe pile;
s8, repeating the steps S1-S7 on the new trestle main beam 5 and the two bailey frames 6;
and S9, repeating the steps S7-S8 until the construction of the trestle is completed.
In the technical scheme, after the steel pipe pile is driven, a crane is used for removing the pile cap, and the connection relation between the integral structure and the bailey frame 6 group is removed: specifically, the lengths of the pair of support legs 4 are adjusted first and the front ends of the integral structure are slightly sunk, then the crane slightly lifts the integral structure to slightly sink the rear ends of the integral structure, the locking of the rear anchors is released, the bolts 10 are pulled out, and finally the integral structure is integrally transferred. The integral structure comprises two groups of supporting beams, at least one cross beam, at least two pairs of guide frames and a pair of supporting legs.
In another technical scheme, when the integral structure is lifted, lifting points are arranged at the intersection points of the two groups of supporting beams 1 and the supporting frame 18, and four-point horizontal lifting is adopted.
In the technical scheme, when in hoisting, the hoisting point is arranged at the intersection point of the longitudinal girder 7 and the supporting frame 18, four-point horizontal hoisting is adopted, and the hoisting is assisted by arranging two traction ropes.
In another technical scheme, the cross beams 2 are transversely fixed on the top surfaces of the two groups of support beams 1 along the trestle by a pair of fixing devices, the top surfaces of the cross beams 2 are downwards recessed to form square grooves 22 which are vertically penetrated, the lower surfaces of the cross beams 2 are inwards recessed to form square clamping grooves 23 which are uniformly arranged at intervals along the length direction of the cross beams and are longitudinally along the trestle, and the middle parts of the square clamping grooves are penetrated with the square grooves 22;
the fixing device includes:
a fixing block 20 fixed to the upper surfaces of the pair of main beams 7 of the group of support beams 1 and integrally connecting the two;
the clamping plate 21 is formed into an I-shaped plate shape by a web 27 and a pair of square clamping rods 28 fixed at the upper end and the lower end, the clamping rods 28 fixed at the lower end of the web of the clamping plate 21 are fixed on the upper surface of the fixed block 20, the web of the clamping plate 21 vertically penetrates through the cross beam 2, and the height of the web is larger than that of the cross beam 2; the clamping rod 28 is matched with the square clamping groove 23.
In the technical scheme, when construction of trestle with different transverse widths is carried out, the distance between the two groups of supporting beams 1 can be adjusted only by adjusting the positions of the pair of clamping plates 21 on the cross beams 2, and the cross beams 2 are not required to be detached from the two groups of supporting beams 1 and then are installed on the two groups of supporting beams 1; when the lower clamping bars 28 of the pair of clamping plates 21 are clamped in the different square clamping grooves 23 of the cross beam 2, the distances between the two groups of supporting beams 1 are different, and each group of supporting beams 1 and the cross beam 2 are relatively motionless.
In another technical scheme, the first cross bar 11 and the second cross bar 12 have the same structure;
the first cross bar 11 comprises, in order in the transverse direction: a first set of bars 24, a second screw 25, a second set of bars 26; the first loop bar 24 and the second loop bar 26 have the same structure, are fixed on the corresponding support beams 1, and have both ends protruding out of the corresponding support beams 1;
the first sleeve rod 24 is square rod-shaped and is provided with a screw hole which is transversely penetrated; the external threads at the two ends of the second screw rod 25 are opposite in rotation direction;
wherein, both ends of the second screw 25 are respectively screwed in screw holes of the first loop bar 24 and the second loop bar 26.
In this technical scheme, the length of the first cross bar 11 or the second cross bar 12 is adjusted by adjusting the length of the second screw 25 extending out of the first loop bar 24 and the second loop bar 26, so as to adapt to the construction of trestles with different transverse widths.
Example 1
Two pairs of main beams 7 are formed by four H700 section steels with the length of 12.85m, the section steels are arranged in parallel and side by side in the longitudinal direction of a horizontal trestle, the same position of a web plate at the tail part of each section steel is provided with a reserved hole of a bolt 10, the reserved holes are welded with a cross beam 2, and the reserved holes are connected with the bolts 10 in a perforation mode;
the bolt 10 of the embodiment adopts two groove 12.6 section steels with the length of 2.5m, is horizontally arranged in the web plate of the main beam 7 and is connected with the main beam 7 and the bailey frame 6 in a perforation mode;
the cross beam 2 of the embodiment adopts two HM588 section steels with the length of 8m, is vertically arranged above the main beams 7 in the horizontal direction and is welded with the four main beams 7;
the railing 30 of the embodiment is formed by welding phi 48 multiplied by 3.6mm scaffold tubes, is arranged in four rows vertically and parallelly above the main beam 7 and is connected with the main beam 7 through bolts;
the diagonal bracing of the embodiment adopts two 10m long I/O25 a section steel, is horizontally and crosswise arranged between the middle two main beams 7, and the end parts are respectively welded with the webs of the main beams 7;
the guide plate 8 of the embodiment is a rectangular steel plate with the thickness of 2cm, a circular hole is formed in the middle of the guide plate with the size of 1.4x1.4m, the aperture phi is 830mm, and the guide plate is horizontally arranged between a pair of corresponding main beams 7 and above the guide frame 3;
the connecting rod 9 of the embodiment adopts four I-shaped steel 15, is vertically arranged between a pair of guide plates 8 and has the length of 700mm;
the first cross bar 11 and the second cross bar 12 in this embodiment are respectively 8 pieces of section steel 25a, the horizontal direction is perpendicular to the main beam 7, and the upper layer and the lower layer are arranged, and each layer is four and welded with the main beam 7 respectively.
The construction method of the guide frame 3 in the embodiment comprises the following steps: during construction, the integral structure is firstly lifted by a crane and inserted between the installed bailey frames 6, so that the cross beam 2 is temporarily arranged on the bailey frames 6, then the bolt 10 passes through the web reserved hole of the main beam 7 and the lower part of the chord member of the bailey frames 6 at the rear of the integral structure, the integral structure is anchored, and finally the heights of the pair of supporting legs 4 are adjusted, so that the supporting legs are supported on the main cross beam 5 of the steel trestle, and the integral structure is horizontal. After the installation is completed, a steel bridge deck close to the integral structure can be installed, and the next construction of the steel pipe pile is carried out.
The construction method further comprises the following steps: and on the paved steel trestle, positioning by utilizing a guide frame 3, lifting a pile hammer by adopting a crawler crane, and continuously constructing the steel pipe pile.
The hoisting method of the integral structure further comprises the following steps: during lifting, the lifting points are arranged at the intersection points of the main beam 7 and the supporting frame 18, four-point horizontal lifting is adopted, and two traction ropes are arranged for assisting in descending.
The construction method of the rear anchor of the guide frame 3 is as follows: firstly, lifting the whole structure between the installed bailey frames 6, enabling a pair of supporting legs 4 below the main beam 7 to be just positioned on the last row of constructed steel trestle main beams 5, and then inserting bolts 10 into the reserved holes of the main beam 7 and between the upper chord members and the web members of the bailey frames 6 to finish the rear anchor.
The construction method for adjusting the supporting leg 4 comprises the following steps: when the rear anchor of the integral structure is completed, the integral structure is slightly lowered, and then the height of the supporting leg 4 is adjusted, so that the integral structure is horizontal.
The construction method for removing the whole structure comprises the following steps: when the steel pipe pile is driven, firstly, the pile cap is removed by using a crane, firstly, the heights of a pair of supporting legs 4 are adjusted to slightly sink the front end of the integral structure, then, the front end of the integral structure is slightly lifted by the crane to slightly sink the rear end of the integral structure, the locking of the rear anchor is released, the bolt 10 is pulled out, and finally, the integral structure is transferred.
The construction method of the guide frame 3 further comprises the following steps:
1) Two pairs of main beams 7 are inserted between the bailey frames 6, and are temporarily seated on the bailey frames 6 by the cross beams 2;
2) The crane slightly and integrally lifts the front end of the integral structure, inserts a bolt 10 into a reserved hole of the main beam 7 at the rear of the integral structure, passes through between the chord member and the web member of the bailey frame 6, and anchors the integral structure;
3) Unloading a crane, and setting the whole structure on the main beam 5 of the steel trestle;
4) The heights of the pair of supporting legs 4 are adjusted to enable the integral structure to be in a horizontal state, and the installation of the integral structure is completed;
5) After the installation of the integral structure is completed, finally installing a steel bridge deck structure close to the integral structure, and carrying out next cross-pile foundation construction on the steel deck on the crane;
6) When the steel pipe pile is driven, the pile cap is removed by the crane, and then the pile cap is removed according to the reverse installation sequence of the guide frame 3.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (8)
1. A steel-pipe pile leading truck structure for the direction of the steel-pipe pile installation process of landing stage, its characterized in that includes:
two groups of support beams longitudinally arranged along the trestle;
at least one cross beam transversely fixed on the top surfaces of the two groups of support beams along the trestle, thereby forming an integral structure;
at least two pairs of guide frames, wherein each pair of guide frames are respectively arranged on two groups of support beams so as to guide the steel pipe pile lowering process;
the support legs are symmetrically arranged on the bottom surfaces of the two groups of support beams, and the support legs are supported on the forefront main beam of the constructed trestle; the height of each pair of supporting legs is adjustable;
the rear end of the integral structure along the longitudinal direction of the trestle is hinged to two bailey frame groups at the rear side of the main beam of the trestle, and the integral structure can be horizontal by adjusting the heights of a pair of supporting legs;
the support leg includes:
the fixing plate is vertically arranged, and the upper end of the fixing plate is fixed with the bottom surface of the supporting beam; two opposite sides of the lower end of the fixed plate extend outwards to form a horizontal part;
a support plate horizontally disposed right below the fixing plate; the support plate is fixed with a plurality of first screw rods opposite to two sides of the horizontal part, the middle parts of the support plate are connected with a first nut in a threaded mode, and the upper ends of the first screw rods vertically penetrate through the upper ends of the opposite horizontal parts and are connected with a second nut in a threaded mode.
2. The steel pipe pile guide frame structure according to claim 1, wherein each set of support beams includes a pair of main beams; each bailey frame set comprises a pair of bailey frames;
the pair of main beams are erected on the outer sides of the pair of bailey frames, and a bolt transversely penetrates through the main beams, the pair of bailey frames and the other main beam in sequence, so that the pair of main beams are hinged with the pair of bailey frames.
3. The steel pipe pile guide frame structure according to claim 2, wherein the guide frames each comprise a pair of guide plates which are horizontally arranged and vertically arranged, each guide plate is provided with a guide hole which is vertically penetrated, and the guide plates are positioned between a pair of main beams on the same side; a plurality of vertical connecting rods are connected between the pair of guide plates;
each pair of guide frames is fixed on the two groups of support beams through a pair of transverse first cross bars and a pair of transverse second cross bars;
the pair of first cross bars are fixed on the top surfaces of the two groups of support beams, and the pair of second cross bars are fixed on the bottom surfaces of the two groups of support beams and are positioned right below the pair of first cross bars;
for any guide frame, the upper guide plate of the pair of guide plates is fixed on the pair of first cross beams, and the lower guide plate is fixed on the pair of second cross beams.
4. The steel pipe pile guide frame structure according to claim 2, further comprising a supporting frame, wherein the middle parts of the supporting frames are crossed and fixed by a pair of diagonal braces to form a cross shape, and four ends of the supporting frame are respectively fixed between two groups of supporting beams so as to increase the strength of the integral structure.
5. The steel pipe pile guide frame structure according to claim 3, wherein the cross beams are transversely fixed on the top surfaces of two groups of support beams along the trestle through a pair of fixing devices, the top surfaces of the cross beams are downwards recessed to form square grooves which are vertically penetrated, the lower surfaces of the cross beams are inwards recessed to form square clamping grooves which are uniformly arranged at intervals along the length direction of the cross beams and are longitudinally penetrated along the trestle, and the middle parts of the square clamping grooves are penetrated with the square grooves;
the fixing device includes:
the fixed block is fixed on the upper surfaces of a pair of main beams of a group of supporting beams and connects the two main beams into a whole;
the clamping plate is formed into an I-shaped plate shape by a web plate and a pair of square clamping rods fixed at the upper end and the lower end of the web plate, the clamping rods fixed at the lower end of the web plate of the clamping plate are fixed on the upper surface of the fixed block, the web plate of the clamping plate vertically penetrates through the cross beam, and the height of the web plate is larger than that of the cross beam; the clamping rod is matched with the square clamping groove.
6. The steel pipe pile guide frame structure according to claim 5, wherein the first cross rod and the second cross rod are identical in structure;
the first cross bar comprises, in order along the transverse direction: the first sleeve rod, the second screw rod and the second sleeve rod; the first loop bar and the second loop bar have the same structure, are both fixed on corresponding support beams, and both ends of the first loop bar and the second loop bar protrude from the corresponding support beams;
the first loop bar is square bar-shaped and is provided with a screw hole which is transversely penetrated; the external threads at the two ends of the second screw rod are opposite in rotation direction;
and two ends of the second screw rod are respectively in screw holes of the first loop bar and the second loop bar in a screwed manner.
7. A method of constructing a steel pipe pile guide frame structure according to claim 4, comprising the steps of:
s1, hoisting the integral structure to the forefront of a trestle, and supporting a beam on two bailey frame groups at the rear side of a main beam of the trestle;
s2, a pair of inserting pins are respectively inserted into reserved holes of a main beam at one side, upper chords and web members of two bailey frames at the rear side of a main beam of a trestle, and post-anchor fixing is completed;
s3, adjusting the heights of the pair of supporting legs to enable the pair of supporting legs to be supported on the main cross beam of the trestle and enable the whole structure to be horizontal;
s4, installing a steel bridge deck closest to the cross beam on the two bailey frame groups;
s5, constructing on the steel bridge deck closest to the cross beam, and inserting steel pipe piles by utilizing the guide frame;
s6, dismantling a pair of bolts, hoisting and removing the integral structure;
s7, installing a new trestle main beam and two new bailey frame groups on the steel pipe pile;
s8, repeating the steps S1-S7 on the new trestle main beam and the two bailey frame groups;
and S9, repeating the steps S7-S8 until the construction of the trestle is completed.
8. The method for constructing a steel pipe pile guide frame structure according to claim 7, wherein when the integral structure is lifted, lifting points are arranged at the intersection points of two groups of supporting beams and the supporting frame, and four-point horizontal lifting is adopted.
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| CN110172972A (en) * | 2019-05-13 | 2019-08-27 | 中国建筑第六工程局有限公司 | A kind of steel-pipe pile construction guiding device |
| CN110670488A (en) * | 2019-10-15 | 2020-01-10 | 中铁二十四局集团安徽工程有限公司 | Full-prefabricated assembled bridge construction platform and construction method |
| CN110804948B (en) * | 2019-10-31 | 2021-05-11 | 安徽省路港工程有限责任公司 | Construction method of steel pipe pile bailey truss foundation full-space bracket system |
| CN111877345B (en) * | 2020-07-20 | 2021-05-21 | 浙江中天恒筑钢构有限公司 | Steel pipe pile positioning device for steel trestle construction in water area and construction method |
| CN112935157B (en) * | 2021-02-01 | 2023-07-07 | 南通理工学院 | Manufacturing method and manufacturing auxiliary device of ball joint space truss reinforcement cage |
| CN115262362A (en) * | 2022-07-26 | 2022-11-01 | 中国港湾工程有限责任公司 | Full-hall type steel trestle and construction method thereof |
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