CN113502743A - Method for mounting arch rib and main beam of steel truss arch bridge - Google Patents
Method for mounting arch rib and main beam of steel truss arch bridge Download PDFInfo
- Publication number
- CN113502743A CN113502743A CN202110617218.1A CN202110617218A CN113502743A CN 113502743 A CN113502743 A CN 113502743A CN 202110617218 A CN202110617218 A CN 202110617218A CN 113502743 A CN113502743 A CN 113502743A
- Authority
- CN
- China
- Prior art keywords
- arch
- steel
- installing
- crane
- span
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 81
- 239000010959 steel Substances 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000009194 climbing Effects 0.000 claims abstract description 72
- 238000010276 construction Methods 0.000 claims abstract description 36
- 238000009434 installation Methods 0.000 claims abstract description 13
- 239000003921 oil Substances 0.000 description 11
- 238000004873 anchoring Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- E01D19/00—Structural or constructional details of bridges
-
- 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
- E01D21/10—Cantilevered erection
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The utility model provides a method for installing arch ribs and a girder of a steel truss arch bridge, which relates to the technical field of bridge construction, can simultaneously realize the installation of the arch ribs and the girder and can save the construction period and construction equipment. The method comprises the following steps: step one, constructing two side spans of the steel truss arch bridge, wherein the two side spans are symmetrically constructed; step two, installing an arch climbing crane on each side span; step three, the two groups of arch climbing cranes gradually hoist the steel arch bar pieces from respective side spans to mid spans and complete installation until the steel arch bar pieces are folded; and step four, symmetrically constructing the suspender and the main beam from the midspan to the side span by two groups of arch climbing cranes. The embodiment of the invention adopts the arch climbing crane to realize the installation of the arch rib and the main beam at the same time, thereby realizing two purposes of one machine and saving construction equipment and construction period.
Description
Technical Field
The disclosure relates to the field of bridge construction, in particular to a steel truss arch bridge arch rib and a main beam installation method.
Background
The large-span steel arch bridge generally adopts a construction method of arch first and girder second, wherein the installation of the steel arch can be managed by adopting a cantilever frame, and the cantilever frame is usually erected by adopting a cable crane or an arch climbing crane.
The steel arch erection by adopting the arch climbing crane is generally divided into the following steps: firstly, carrying out side-span construction and installing an arch climbing crane. Secondly, assembling steel arches on cantilevers of the arch climbing crane, installing a buckling tower after the arch climbing crane crosses a side span, and installing and tensioning a buckling anchor cable when the cantilevers are assembled to corresponding positions so as to ensure the stress and stability of cantilever construction. And the steel arch is assembled by the arch climbing crane and the hanger rod construction is carried out at the same time. And thirdly, assembling the climbing arch crane to a folding section to fold the steel arch. And fourthly, dismantling the climbing arch crane and the buckling tower. And after the steel arch construction is finished, constructing and folding the midspan girder by adopting a bridge deck crane.
The construction method of the arch climbing crane has the following defects: firstly, only the steel arch is installed on the arch climbing crane, the arch climbing crane and the tower buckling disassembly are needed after the construction of the steel arch is finished, and then the main beam is installed from the side span to the midspan by the bridge deck crane, so that the construction period is long. Secondly, two large-scale devices of an arch climbing crane and a bridge deck crane are needed for installing the whole bridge, and the construction cost is very high. There is very long time difference to between girder and the jib connection after climbing arch loop wheel machine installation jib, and the jib is in lower extreme free state and difficult fixed at this stage, and it is great to receive the wind load influence, and influences the overall stability of structure in the work progress, has increased safe risk.
According to the current situation, an arch climbing crane construction method which can realize the installation of the steel arch and the main beam simultaneously, save the construction period and the construction equipment and can better ensure the construction safety is urgently needed to be researched, and the method has great significance for the construction of the large-span steel truss arch bridge.
Disclosure of Invention
The embodiment of the invention provides a method for installing arch ribs and a main beam of a steel truss arch bridge.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
a method for installing arch ribs and main beams of a steel truss arch bridge comprises the following steps:
step one, constructing two side spans of the steel truss arch bridge, wherein the two side spans are opposite;
step two, installing an arch climbing crane on each side span;
step three, the two groups of arch climbing cranes gradually hoist the steel arch bar pieces from respective side spans to mid spans and complete installation until the steel arch bar pieces are folded;
and step four, symmetrically constructing the suspender and the main beam from the midspan to the side span by two groups of arch climbing cranes.
In a possible implementation manner, the first step is specifically:
constructing a main beam and a lower chord of each side span of the steel truss arch bridge;
installing a first segment upper chord member after the side strides to a main supporting point of the pier;
and installing an arch climbing crane on the upper chord of the first segment.
In a possible implementation manner, the second step further includes:
if the upper member of the side span meets the hoisting requirements of other hoisting equipment such as a truck crane and the like, the upper member of the side span is installed by adopting the truck crane or other hoisting equipment, and when the upper member of the side span is installed to the main span steel truss arch, an arch climbing crane is installed on the upper chord member of the last section of the side span.
In a possible implementation manner, the step three is specifically:
the arch climbing crane gradually hoists the steel arch rod piece towards the midspan and installs the steel arch rod piece until the steel arch rod piece is folded;
after the arch climbing crane moves across the side span, the buckling tower is installed;
and when the steel arch is assembled to the corresponding position, tensioning the buckled anchor cable.
In a possible implementation mode, after the steel arch rod pieces in the step three are folded, the hooking system is removed to install and stretch the horizontal cable;
after the construction of the horizontal cable is finished, a suspender and a main beam are installed by an arch climbing crane from the midspan.
In one possible implementation, the construction of the hanger rod and the main beam symmetrically from the mid-span to the side-span comprises:
firstly, installing a suspender, installing a main beam of a closure section by double-crane lifting and hanging of the arch climbing cranes at two sides, and primarily tensioning the suspender to enable the main beam of the closure section to be installed to a designed elevation position, wherein the main beam of the closure section is in a rotatable state;
temporary fixing anchor points are arranged at the proper positions of the steel arches and four angular points of the closure section main beam, and the closure section main beam is temporarily fixed through temporary fixing anchor cables.
In a possible implementation manner, the construction of the hanger rod and the main beam symmetrically from the mid-span to the side-span further includes:
firstly, installing a midspan closure segment, after the midspan closure segment is installed, retreating the arch climbing crane to two sides, and symmetrically constructing main beams from a midspan to side spans until the main beams are closed with the side spans of the two sides.
In the present disclosure, at least the following technical effects or advantages are provided:
the embodiment of the invention adopts the arch climbing crane to realize the installation of the steel arch and the main beam at the same time, thereby realizing two purposes of one machine and saving construction equipment and construction period.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments of the present invention or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a method for installing arch ribs and main beams of a steel truss arch bridge provided by the invention;
FIG. 2 is a schematic structural diagram of step (1) provided in the embodiment of the present invention;
FIG. 3 is a schematic structural diagram of step (2) provided in the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of step (3) provided in the embodiment of the present invention;
FIG. 5 is a schematic structural diagram of step (4) provided in the embodiment of the present invention;
FIG. 6 is a schematic structural diagram of step (5) provided in accordance with an embodiment of the present invention;
reference numerals: firstly, spanning a main beam; a lower chord; ③ a main fulcrum; fourthly, upper chords; fifthly, climbing an arch crane; sixthly, buckling a tower; seventhly, fastening an anchor cable; eighthly, horizontal cable; ninthly, hanging rods; the R main beam;
a closure section main beam;
temporarily fixing the anchor point;
and temporarily fixing the anchor cable.
Detailed Description
The present disclosure is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present disclosure, and those skilled in the art should understand that the functional, methodological, or structural equivalents of these embodiments or substitutions may be included in the scope of the present disclosure.
The embodiment of the disclosure provides a method for installing arch ribs and main beams of a steel truss arch bridge, which comprises the following steps:
referring to fig. 1, in the first step, two side spans of the steel truss arch bridge are constructed, and the two side spans are opposite.
Specifically, the first step is as follows: constructing a main beam and a lower chord of each side span of the steel truss arch bridge; installing a first segment upper chord member after the side strides to a main supporting point of the pier; and installing an arch climbing crane on the upper chord of the first segment.
Please continue to refer to fig. 1, step two, install the climbing arch crane at each side span.
Specifically, the second step comprises: if the upper member of the side span meets the hoisting requirements of other hoisting equipment such as a truck crane and the like, the upper member of the side span is installed by adopting the truck crane or other hoisting equipment, and when the upper member of the side span is installed to the main span steel truss arch, an arch climbing crane is installed on the upper chord member of the last section of the side span.
Continuing to refer to fig. 1, step three, two sets of climbing arch cranes gradually hoist the steel arch bar from each side span to the midspan and complete the installation until the steel arch bar is folded.
Specifically, the third step is:
the arch climbing crane gradually hoists the steel arch rod piece towards the midspan and installs the steel arch rod piece until the steel arch rod piece is folded;
after the arch climbing crane moves across the side span, the buckling tower is installed;
and when the steel arch is assembled to the corresponding position, tensioning the buckled anchor cable.
Specifically, after the steel arch rod pieces in the third step are folded, the hooking system is removed to install and stretch the horizontal cable; after the construction of the horizontal cable is finished, a suspender and a main beam are installed by an arch climbing crane from the midspan.
With reference to fig. 1, in the fourth step, two sets of arch-climbing cranes symmetrically construct the boom and the main beam from the midspan to the side span.
Specifically, the symmetrical construction jib of following midspan to sidespan, girder include: firstly, installing a suspender, installing a main beam of a closure section by double-crane lifting and hanging of the arch climbing cranes at two sides, and primarily tensioning the suspender to enable the main beam of the closure section to be installed to a designed elevation position, wherein the main beam of the closure section is in a rotatable state; temporary fixing anchor points are arranged at the proper positions of the steel arches and four angular points of the closure section main beam, and the closure section main beam is temporarily fixed through temporary fixing anchor cables.
Specifically, the symmetrical construction jib of following midspan to sidespan, girder still include: firstly, installing a midspan closure segment, after the midspan closure segment is installed, retreating the arch climbing crane to two sides, and symmetrically constructing main beams from a midspan to side spans until the main beams are closed with the side spans of the two sides.
Referring to fig. 2 to 6, a method for installing an arch rib and a main beam of a steel truss arch bridge according to an embodiment of the present invention includes the following steps:
step (1): firstly, constructing a main girder and a lower chord of an edge span of a steel truss arch bridge, starting to install a first section upper chord after the edge span falls to a main branch point, and starting to install an arch climbing crane on the first section upper chord after the installation is finished. If the upper member of the side span meets the hoisting requirements of other hoisting equipment such as a truck crane and the like, the upper member of the side span can be installed by adopting the truck crane or other hoisting equipment, and when the upper member of the side span is installed to the main span steel truss arch, the arch climbing crane is installed on the upper chord member of the last section of the side span.
Step (2): and (4) gradually hoisting the steel arch rod piece towards the midspan by the arch-climbing crane and installing the steel arch rod piece, and starting to install the buckling tower after the arch-climbing crane moves across the side span. And when the steel arch is assembled to the corresponding position, tensioning the fastening anchor cable.
And (3): and (5) folding the steel arch.
And (4): after the steel arch is closed, the hooking system (the tower and the anchor cable are buckled) is removed to install and stretch the horizontal cable (r), and after the horizontal cable construction is finished, a suspender ninum and a main beam (R) are installed by an arch climbing crane from the midspan.
In the traditional construction process of the large-span steel arch bridge, after the construction of a steel arch is finished, a bridge deck crane is adopted to carry out construction and closure of a midspan girder. The construction of the main span girder can be realized on the arch by adopting the arch climbing crane. (1) The tradition climbs and encircles the loop wheel machine and adopts full-rotation loop wheel machine structural style, because the existence of full-rotation mechanism, leads to the loop wheel machine dead weight great, can only realize the single-point and lift by crane to hoisting capacity is limited, the climbing of this application encircles the loop wheel machine and adopts whole truss-like structural style, and structure biography power efficiency is higher, possesses the large-tonnage multiple spot and lifts by crane the function in step, to hoist and mount scope total coverage, has reduced full-rotation hoisting structure, is a structural style and optimizes more, the equipment that hoisting capacity is stronger. (2) In the process of retracting the arch climbing crane on an arch, the front anchoring device and the rear anchoring device of the crane are anchored on the arch ribs, so that the crane stations are reliably fixed, then the crane stations are respectively lowered to the positions of barges on the water surface through the main hooks of 4 multiplied by 60t, four-point simultaneous hoisting is realized on the main span steel beam, after the crane is hoisted to the design height, the arch bridge suspender is installed, and the connection between the sections of the main beam is completed, so that the hoisting of the main span steel beam is realized.
Firstly, installing a main beam mid-span closure segment: firstly, a suspender is installed, and a closure section girder is installed by double-machine lifting and hanging of the arch climbing cranes at two sides
And (5) primarily tensioning the suspender to enable the main beam to be installed to the designed elevation position. At the moment, the closure section main beam is in a rotatable state, so that temporary fixing anchor points are arranged at proper positions of the steel arch and four corner points of the closure section main beam
By temporarily fixing the anchorage cableAnd temporarily fixing the main beam.
And (5): after the girder of the midspan closure section is installed, the arch climbing crane retreats towards two sides, and the girder is symmetrically constructed from the midspan to the side span until being closed with the girder of the side span at two sides.
The arch climbing crane provided by the embodiment of the invention can realize the installation of the steel arch and the main beam at the same time, realizes the dual purposes of one machine, and saves construction equipment and construction period.
The bridge deck system in the embodiment of the invention refers to a bridge deck structure system which directly bears loads of vehicles, crowds and the like and transmits the loads to main bearing members in auxiliary facilities of a bridge, and comprises bridge deck pavement, bridge deck boards, longitudinal beams, cross beams, shielding plates, sidewalks and the like. The bridge deck structure system is composed of bridge deck plates, reinforcing ribs, longitudinal beams, transverse beams and other members and directly bears the load of the vehicle.
The steel bridge frame arch bridge of the embodiment of the invention adopts a double-deck design. The main truss chord members all adopt box-shaped sections: the web members adopt two types of H-shaped sections and box-shaped sections: the main truss connecting piece adopts a rhombic truss type upper and lower parallel connection, and the rod pieces are connected by bolts. The side span is assembled by a support method, and the main span is assembled by a cantilever by a novel climbing arch crane.
The arch crane is climbed to traditional steel bridge frame arch bridge adopts the full gyration to carry out single member cantilever and assembles, and according to climbing the arch crane application in the country can know: the increase of the hoisting weight of the arch climbing crane is in direct proportion to the dead weight of the product machine, the dead weight reaches more than 3.2 times of the hoisting weight under the condition that the hoisting weight is only limited within 100 tons, and the total rotating mechanism in the full-rotation type arch climbing crane accounts for about 30% of the dead weight of the structure, so that the risk of structural overturning in the cantilever assembling process of the steel truss arch bridge is increased.
Aiming at the current situation that the traditional arch climbing crane has large dead weight, single-pole hoisting and light hoisting weight, the arch climbing crane is optimally designed, the structural form of the optimized frame reduces the structural dead weight while ensuring the rigidity and provides a foundation for multi-hoisting point and large-tonnage hoisting, and a traveling system and an anchoring system of the arch climbing crane are optimally designed, so that the hoisting traveling and anchoring of the crane are safe and reliable, the structural calculation and hoisting working condition analysis are carried out, the crane design meets the design specification requirements of the crane, and the aims of high efficiency of the crane structure, increased hoisting weight, stable traveling and reliable anchoring are realized.
The total weight of the arch climbing crane is 280t, and the arch climbing crane mainly comprises a frame structure, a hoisting system, a walking system and an anchoring system. The climbing arch crane provided by the embodiment of the invention is of a cantilever type truss structure integrally, 4 main longitudinal beams are arranged and divided into a left side girder and a right side girder, and a triangular truss structure is formed by the upper portal rigid frame and the lower box-shaped cross beam. The transverse and longitudinal movement system is arranged at the front end of the frame of the climbing arch crane and used for realizing amplitude adjustment in the rod hoisting process, and better hoisting adaptability is provided.
By means of the characteristic of high rigidity of the integral truss structure, the multi-point hoisting is realized by arranging the 4 multiplied by 60t main hook and the 4 multiplied by 15t auxiliary hook. The hoisting system comprises a transverse and longitudinal moving mechanism, a lifting hook and a matched winch, wherein the transverse and longitudinal moving mechanism is positioned at the front ends of the two main longitudinal beams on the same side, and the precise amplitude variation of a hoisting point is realized through 4 8t winches and a grading limiting device. The main hook adopts a winch with the rated lifting capacity of 15t for hoisting. The winch is provided with a high-speed end brake and a low-speed end brake, the high-speed end brake has a manual release function, and the hoisting control system is combined to ensure the safe and controllable hoisting.
The walking mechanism mainly comprises a wheel box, a track, an oil cylinder and the like. The crane alternately pushes the wheel boxes through the traveling oil cylinder to enable the traveling wheels to roll on the track to realize forward movement, the traveling track consists of 9 sections of 3m beam sections, and the track is connected with the arch rib supporting seat through bolt connection.
The rear end of each walking wheel box of the crane is provided with 1 mechanical self-locking hydraulic oil cylinder. When the four oil cylinders synchronously jack in during traveling, when the oil cylinders reach the maximum stroke, the rear supporting point oil cylinder releases the anchoring with the rail, the anchoring is carried out after the oil cylinders are recovered in place, the front oil cylinder releases the anchoring and returns oil for recovery, and the oil cylinder enters the next traveling stroke after being anchored on the rail again. Finally, the arch climbing crane is pushed to the right position, namely the center of the front support point is positioned at the position about 2.5m behind the segment line of the arch rib rod piece for hoisting operation.
The anchoring system comprises supporting tops and pulling anchors which are arranged on 4 supporting points, and after the crane moves forward to a proper position, the pulling rod on the front cross beam is connected with an ear plate which is designed in advance on the truss tops through a pin shaft for bearing the downward sliding component force of the crane. The rear anchor vertically fixes the rear cross beam and the truss top of the main structure together and bears the upward counter force when the crane works. The rear anchor point is pulled in the working state and is pressed in the non-working state.
After the anchor pulling connection of the climbing arch crane is completed, the supporting oil cylinder below the walking wheel box is used for jacking the climbing arch crane to suspend walking wheels, the mechanical thread is screwed to lock the oil cylinder, so that the crane load is transmitted to the wheel box through the main structure and finally transmitted to the steel truss arch through the supporting device.
The above-listed detailed description is merely a specific description of possible embodiments of the present disclosure, and is not intended to limit the scope of the disclosure, which is intended to include within its scope equivalent embodiments or modifications that do not depart from the technical spirit of the present disclosure.
It will be evident to those skilled in the art that the disclosure is not limited to the details of the foregoing illustrative embodiments, and that the present disclosure may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the disclosure being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A method for installing arch ribs and main beams of a steel truss arch bridge is characterized by comprising the following steps:
step one, constructing two side spans of the steel truss arch bridge, wherein the two side spans are symmetrically installed;
step two, installing an arch climbing crane on each side span;
step three, the two groups of arch climbing cranes gradually hoist the steel arch bar pieces from respective side spans to mid spans and complete installation until the steel arch bar pieces are folded;
and step four, symmetrically constructing the suspender and the main beam from the midspan to the side span by two groups of arch climbing cranes.
2. The method for installing the arch ribs and the main beams of the steel truss arch bridge according to claim 1, wherein the first step is specifically as follows:
constructing a main beam and a lower chord of each side span of the steel truss arch bridge;
installing a first segment upper chord member after the side strides to a main supporting point of the pier;
and installing an arch climbing crane on the upper chord of the first segment.
3. The method for installing the arch ribs and the main beams of the steel truss arch bridge according to claim 1, wherein the second step further comprises the following steps:
if the upper member of the side span meets the hoisting requirements of other hoisting equipment such as a truck crane and the like, the upper member of the side span is installed by adopting the truck crane or other hoisting equipment, and when the upper member of the side span is installed to the main span steel truss arch, an arch climbing crane is installed on the upper chord member of the last section of the side span.
4. The method for installing the arch ribs and the main beams of the steel truss arch bridge according to claim 1, wherein the third step is specifically as follows:
the arch climbing crane gradually hoists the steel arch rod piece towards the midspan and installs the steel arch rod piece until the steel arch rod piece is folded;
after the arch climbing crane moves across the side span, the buckling tower is installed;
and when the steel arch is assembled to the corresponding position, tensioning the buckled anchor cable.
5. The method for installing the arch ribs and the main beams of the steel truss arch bridge according to the claim 1 or 4, wherein after the steel arch rod pieces in the step three are folded, the hooking system is removed to install and stretch the horizontal cables;
after the construction of the horizontal cable is finished, a suspender and a main beam are installed by an arch climbing crane from the midspan.
6. The method for installing the arch ribs and the girders of the steel truss arch bridge according to claim 1, wherein the symmetrically constructing the hanging rods and the girders from the middle span to the side span comprises the following steps:
firstly, installing a suspender, installing a main beam of a closure section by double-crane lifting and hanging of the arch climbing cranes at two sides, and primarily tensioning the suspender to enable the main beam of the closure section to be installed to a designed elevation position, wherein the main beam of the closure section is in a rotatable state;
temporary fixing anchor points are arranged at the proper positions of the steel arches and four angular points of the closure section main beam, and the closure section main beam is temporarily fixed through temporary fixing anchor cables.
7. The method for installing the arch ribs and the girders of the steel truss arch bridge according to claim 6, wherein the symmetrically constructing the hanging rods and the girders from the mid-span to the side-span further comprises:
firstly, installing a midspan closure segment, after the midspan closure segment is installed, retreating the arch climbing crane to two sides, and symmetrically constructing main beams from a midspan to side spans until the main beams are closed with the side spans of the two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110617218.1A CN113502743A (en) | 2021-06-03 | 2021-06-03 | Method for mounting arch rib and main beam of steel truss arch bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110617218.1A CN113502743A (en) | 2021-06-03 | 2021-06-03 | Method for mounting arch rib and main beam of steel truss arch bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113502743A true CN113502743A (en) | 2021-10-15 |
Family
ID=78008946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110617218.1A Pending CN113502743A (en) | 2021-06-03 | 2021-06-03 | Method for mounting arch rib and main beam of steel truss arch bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113502743A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673094A (en) * | 2022-04-28 | 2022-06-28 | 中国十九冶集团有限公司 | Construction method of river-crossing bridge |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042757A (en) * | 2019-04-08 | 2019-07-23 | 中国铁建大桥工程局集团有限公司 | The synchronous construction method of installation of three main truss steel truss arched bridge arched girders of one kind |
| CN110878515A (en) * | 2019-12-17 | 2020-03-13 | 林同棪国际工程咨询（中国）有限公司 | Through-type arch bridge for increasing transverse rigidity of main beam and reducing horizontal thrust of foundation |
| CN111560854A (en) * | 2020-05-25 | 2020-08-21 | 武船重型工程股份有限公司 | Single-point buckling and hanging construction method and single-point buckling and hanging construction system for steel truss arch bridge |
-
2021
- 2021-06-03 CN CN202110617218.1A patent/CN113502743A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042757A (en) * | 2019-04-08 | 2019-07-23 | 中国铁建大桥工程局集团有限公司 | The synchronous construction method of installation of three main truss steel truss arched bridge arched girders of one kind |
| CN110878515A (en) * | 2019-12-17 | 2020-03-13 | 林同棪国际工程咨询（中国）有限公司 | Through-type arch bridge for increasing transverse rigidity of main beam and reducing horizontal thrust of foundation |
| CN111560854A (en) * | 2020-05-25 | 2020-08-21 | 武船重型工程股份有限公司 | Single-point buckling and hanging construction method and single-point buckling and hanging construction system for steel truss arch bridge |
Non-Patent Citations (4)
| Title |
|---|
| 付宇文等: "重庆朝天门长江大桥主桥钢桁架拱肋安装施工方案", 《交通标准化》 * |
| 李芳军等: "万州长江大桥钢桁拱系杆梁桥架设技术", 《中国铁道科学》 * |
| 赵金磊: "芜湖长江公路二桥主桥钢箱梁安装施工技术", 《公路交通科技 应用技术版》 * |
| 霍伟松: "大跨度钢桁拱桥施工方法的探讨", 《交通世界》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673094A (en) * | 2022-04-28 | 2022-06-28 | 中国十九冶集团有限公司 | Construction method of river-crossing bridge |
| CN114673094B (en) * | 2022-04-28 | 2023-03-21 | 中国十九冶集团有限公司 | Construction method of river-crossing bridge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100543235C (en) | The method and system of erecting steel trusses by stay cable auxiliary complete cantilever | |
| CN101260650B (en) | 50m/1430t double width integral box girder construction process | |
| CN109653105B (en) | Main truss system of box girder bridge cantilever construction hanging basket and use method thereof | |
| CN112227206B (en) | Process design and construction method for ground anchor to self-anchored beam | |
| CN110396931B (en) | Cable-crossing bridge deck crane of central double-cable-plane cable-stayed bridge and construction method thereof | |
| CN201106155Y (en) | Inclined guy cable auxiliary full cantaliver crane trussed steel beam device | |
| CN109024291A (en) | A kind of integration Bridge Erector and its working method | |
| CN101559905A (en) | Deck unit erection gantry | |
| CN101793010A (en) | Arch-included integral pushing method for large-tonnage multi-span combined arch bridge | |
| CN210856948U (en) | Cable-passing type bridge floor crane for central double-cable-plane cable-stayed bridge | |
| CN110820602A (en) | Single-segment box girder bridge girder erection machine and operation method thereof | |
| CN101481903B (en) | Method for constructing hilly region rope-suspension bridge main beam by span cable supported crane assembling | |
| CN1123861A (en) | Construction of prestressed concrete stayed cable bridge | |
| CN113502743A (en) | Method for mounting arch rib and main beam of steel truss arch bridge | |
| CN201746780U (en) | Bridge girder erection machine capable of passing through tunnel and realizing girder erection at tunnel opening | |
| CN104495653A (en) | Multifunctional large-tonnage beam erecting crane and beam erecting method | |
| CN110528401A (en) | Suspended pouring construction hanging basket system | |
| CN214656451U (en) | Front supporting point composite hanging basket | |
| CN216891994U (en) | Three-span cable crane for mounting main beam of cable-stayed bridge | |
| CN209260561U (en) | A kind of integration Bridge Erector | |
| CN110644372B (en) | Overhead tower-attached cantilever type beam-lifting truss-hanging system for mountainous area | |
| Deng et al. | Design and application of 9000KN hydraulic lifting cable-borne crane for suspension bridge steel girder erection | |
| CN113308997A (en) | Three-span cable crane for mounting main beam of cable-stayed bridge and construction method thereof | |
| CN218145483U (en) | Double-cable-rope hoisting system without cable tower | |
| CN216659726U (en) | Novel beam body supporting beam transporting vehicle |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211015 |