CN202658536U - Device for synchronous construction of continuous girder bridge cantilever side span cast-in-situ section and folding section - Google Patents
Device for synchronous construction of continuous girder bridge cantilever side span cast-in-situ section and folding section Download PDFInfo
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- CN202658536U CN202658536U CN 201220149401 CN201220149401U CN202658536U CN 202658536 U CN202658536 U CN 202658536U CN 201220149401 CN201220149401 CN 201220149401 CN 201220149401 U CN201220149401 U CN 201220149401U CN 202658536 U CN202658536 U CN 202658536U
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Abstract
The utility model belongs to the technical field of bridge construction and particularly relates to a device for synchronous construction of a continuous girder bridge cantilever side span cast-in-situ section and a folding section. The device solves the problems that substep folding construction is long in construction period and complex in construction process when a short side span cast-in-situ section or a valley bridge in construction of a continuous girder bridge cantilever is poured. The device comprises a supporting mechanism for providing support for the side span cast-in-situ section and the folding section. A sliding mechanism enabling beam bottoms of the side span cast-in-situ section and the folding section to slide relative to the supporting mechanism is arranged on top of the supporting mechanism, and a module system of the side span cast-in-situ section and the folding section is arranged on the sliding mechanism. The device has the advantages of achieving synchronous construction of the bridge cast-in-situ section and the side span folding section, changing a conventional method of substep construction, simplifying construction process, improving working efficiency, shortening construction period, reducing construction cost and obtaining good economic benefit.
Description
Technical field
The utility model belongs to the technical field of bridge construction, is specifically related to a kind of continuous girder bridge cantilever end bay Cast-in-Situ Segment and closure segment synchronous construction device.
Background technology
In the construction of continuous girder bridge cantilever pouring, the job practices that end bay closes up generally is to adopt Support Method to build the end bay Cast-in-Situ Segment, adopt simultaneously the Hanging Basket cantilever pouring to the last sections of end bay closure segment, then move basket or the end bay closing device is installed is carried out the construction of end bay closure segment, the method is end bay substep closure construction.For some end bay Cast-in-Situ Segments short bridge or mountain valley bridge, there is long, the cumbersome deficiency of construction technology of duration in the substep closure construction.
Summary of the invention
Goal of the invention of the present utility model: build minor face when striding Cast-in-Situ Segment or mountain valley bridge in Cantilever Construction of Continuous Bridges in order to solve, there is long, the cumbersome deficiency of construction technology of duration in the substep closure construction.
The utility model adopts following technical scheme to realize:
Continuous girder bridge cantilever end bay Cast-in-Situ Segment and closure segment synchronous construction device, it is characterized in that comprising a kind of supporting mechanism that can provide support for end bay Cast-in-Situ Segment and closure segment, the supporting mechanism top is equipped with at the bottom of the beam that can make end bay Cast-in-Situ Segment and closure segment and the slide mechanism of supporting mechanism generation relative sliding, and the template system of end bay Cast-in-Situ Segment and closure segment is installed on the slide mechanism.
Slide mechanism comprises upper longeron and the lower longeron that is installed on the supporting mechanism top, between upper longeron and the lower longeron some cylinders is set.
Supporting mechanism is construction bracket formula structure, and it comprises ground, and support is set on the ground, and crossbeam is set on the support, and support is bowl fastening type full framing or steel pipe column bracket.
Supporting mechanism or be construction derrick type structure, it comprises the suspension rod of pre-buried setting on the kingpost cantalever and the Support bracket that is connected with abutment pier.Support bracket comprises that the bracket diagonal brace that is connected with built-in fitting on the abutment pier is connected the bracket connector that connects the two with the bracket horizontal brace.
The method for synchronously constructing of finishing based on the utility model, construction bracket or the suspension bracket that can carry for end bay Cast-in-Situ Segment and closure segment arch brace are set, support or suspension bracket slide mechanism is installed so that at the bottom of the beam with energy relative sliding between support or the suspension bracket, reduce the frictional resistance between Cast-in-situ Beam body and support or the suspension bracket, the flexible of Cast-in-Situ Segment adapted with the flexible of cantilever segment; At slide mechanism end bay Cast-in-Situ Segment and closure segment template are installed, in template, carry out reinforcing bar binding and answer in advance pipeline to install, then build together end bay Cast-in-Situ Segment and closure segment concrete, build complete after, carry out the conversions of pre-stress construction and system.The Specific construction step is as follows:
1), carries out counterweight in end bay precompressed position;
2), erection construction support or holder device for hoisting;
The erection construction support: carry out first ground and process, really bearing capacity of foundation soil can bear the load that support is conducted oneself with dignity and transmitted; Construction bracket can be the support of bowl fastening type full framing, steel pipe column bracket or other form.
Set up the holder device for hoisting: at kingpost cantalever pre-buried suspension rod is set, built-in fitting is set on the abutment pier is used for Support bracket; Install on the Support bracket that an end stands on the abutment pier built-in fitting, the suspension bracket other end utilizes the pre-buried suspension rod of kingpost cantalever end to bear.
3), pre-pressing bracket;
For guaranteeing that construction carries out smoothly, support set up complete after, carry out precompressed to eliminate the nonelastic deformation of support by design weight, obtain simultaneously the actual numerical value of rack elasticity distortion and various nonelastic deformations.
4), slide mechanism is installed;
Slide mechanism is comprised of two longerons and some cylinders, and longeron model and cylinder model are specifically selected according to actual conditions.After slide mechanism installs, should fix with support.
5), installation form crossbeam and lowering device;
6), Cast-in-Situ Segment and closure segment template are installed, and carry out reinforcing bar binding and prestress pipe installation in template;
7), the end bay Cast-in-Situ Segment is built with the closure segment concrete, behind concrete initial set, should remove the constraint between slide mechanism and support or suspension bracket, so that at the bottom of the beam and can relative sliding between support or the suspension bracket.
The beneficial effects of the utility model: the synchronous construction of having realized bridge Cast-in-Situ Segment and end bay closure segment, changed the conventional method of step-by-step construction, simplified construction technology, improved operating efficiency, shortened the duration, reducing construction cost has been obtained better economic benefit.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the present utility model,
Fig. 2 is the lateral view of Fig. 1,
Fig. 3 is the structural representation of another kind of embodiment of the present utility model,
Among the figure: 1-ground, 2-support, 3-crossbeam, the upper longeron of 4-, the 5-cylinder, 6-template crossbeam, the 7-timber wedge unloads frame, the 8-template, 9-is to pull bar, 10-built-in fitting I, 11-bracket diagonal brace, 12-bracket horizontal brace, 13-bracket connector, 14-suspension rod, 15-built-in fitting II, 16-abutment pier, 17-be the casting beams section, 18-bracket horizontal-associate tie-rod, 19-end bay Cast-in-Situ Segment, 20-closure segment, longeron under the 21-.
The specific embodiment
By reference to the accompanying drawings the specific embodiment of the present utility model is described further.
Continuous girder bridge cantilever end bay Cast-in-Situ Segment and closure segment synchronous construction device, comprise a kind of supporting mechanism that can provide support for end bay Cast-in-Situ Segment 19 and closure segment 20, the supporting mechanism top is equipped with at the bottom of the beam that can make end bay Cast-in-Situ Segment 19 and closure segment 20 and the slide mechanism of supporting mechanism generation relative sliding, and the template system of end bay Cast-in-Situ Segment 19 and closure segment 20 is installed on the slide mechanism.Slide mechanism comprises upper longeron 4 and the lower longeron 21 that is installed on the supporting mechanism top, between upper longeron 4 and the lower longeron 21 some cylinders 5 is set.
A kind of embodiment of the present utility model: as shown in Figure 1 and Figure 2, described supporting mechanism is construction bracket formula structure, and it comprises ground 1, and support 2 is set on the ground 1, and crossbeam 3 is set on the support 2, and support is bowl fastening type full framing or steel pipe column bracket.
Another kind of embodiment of the present utility model: as shown in Figure 3, described supporting mechanism is construction derrick type structure, and it comprises the suspension rod 14 of pre-buried setting on the kingpost cantalever and the Support bracket that is connected with abutment pier 16.Support bracket comprises the bracket connector 13 that the bracket diagonal brace 11 that is connected with built-in fitting on the abutment pier 16 is connected and is connected the two with the bracket horizontal brace.
Construct as example take certain three-span continuous beam end bay Cast-in-Situ Segment and closure segment synchronous construction, the job practices that the utility model is realized is described, concrete steps are as follows:
1), on Liang Zhudun the Hanging Basket cantilever pouring to the last sections of end bay closure segment.
2), the Calculation Anaysis for Tunnel Structure of construction bracket or holder device for hoisting; Construction bracket or suspension bracket are carried out structure Design and Calculation and analysis, guarantee that intensity, rigidity and the stability of support or suspension bracket meets the demands.
3), erection construction support or holder device for hoisting;
Set up support: first the ground 1 at Cast-in-Situ Segment and closure segment place is processed, erection construction support 2 after processing, the spacing of support is as follows: 0.8m * 1.2m;
Set up the holder device for hoisting: in abutment pier 16, set up built-in fitting 10,15, on built-in fitting 10,15, weld respectively diagonal brace 11 and horizontal brace 12, welding bracket connector 13 between diagonal brace 11 and horizontal brace 12, after bracket is finished, welding bracket horizontal-associate tie-rod 18 between bracket; Setting up the preformed hole of suspension rod 14 in the casting beams section 17, and derrick rig is being installed;
Support or holder device for hoisting are set up complete, should crossbeam 3 be installed at support 2 or bracket, and make crossbeam 3 and bracket or support 2 stable connections.
4), pre-pressing bracket;
For guaranteeing that construction carries out smoothly, support 2 set up complete after, carry out precompressed to eliminate the nonelastic deformation of support by design weight, obtain simultaneously the actual numerical value of rack elasticity distortion and various nonelastic deformations.Precompressed village material is sand pocket, adopts graded loading way, 0==〉60%==〉100%==〉120%, when reaching 120% load, continue 24 hours.Whenever finish one-level and load, all measuring points are carried out one-shot measurement.The mode of load shedding is also adopted in unloading, and program is 120%==〉100%==〉60%==〉0.Whenever finish the one-level unloading, also all measuring points are carried out one-shot measurement.The precompressed observation point adopts hangs vertical plumb bob or drawing the paint mark below support above the support.
5), slide mechanism is installed;
Slide mechanism is comprised of two longerons and some cylinders 5.As calculated, the longeron model is the I24b i iron, and the cylinder model is φ 40mm * 300mm.After installing, bottom girder should be fixing with crossbeam 3.
6), installation form crossbeam and lowering device;
At slide mechanism elder generation installation form crossbeam 6, model be that two [10 channel-section steels, at crossbeam 6 installation lowering devices 7, lowering device 7 is comprised of timber wedge.
7), Cast-in-Situ Segment and closure segment template 8 are installed, between template 8, install pull bar 9, with carrying out the installation of reinforcing bar binding and prestress pipe on the rear pattern plate.
8), the end bay Cast-in-Situ Segment is built with the closure segment concrete, behind concrete initial set, should remove the constraint between slide mechanism and support or suspension bracket, so that at the bottom of the beam and can relative sliding between support or the suspension bracket.
9), after concrete reaches design strength and curing age, by the requirement stretch-draw end bay prestressed strand of design drawing and standard, finishing not is conversion.
10), stride the closure segment concrete in building, stride in the requirement stretch-draw by design drawing and standard and close up prestressed strand.
Claims (5)
1. a continuous girder bridge cantilever end bay Cast-in-Situ Segment and closure segment synchronous construction device, it is characterized in that comprising a kind of supporting mechanism that can provide support for end bay Cast-in-Situ Segment (19) and closure segment (20), the supporting mechanism top is equipped with at the bottom of the beam that can make end bay Cast-in-Situ Segment (19) and closure segment (20) and the slide mechanism of supporting mechanism generation relative sliding, and the template system of end bay Cast-in-Situ Segment (19) and closure segment (20) is installed on the slide mechanism.
2. continuous girder bridge cantilever end bay Cast-in-Situ Segment according to claim 1 and closure segment synchronous construction device, it is characterized in that described slide mechanism comprises upper longeron (4) and the lower longeron (21) that is installed on the supporting mechanism top, arranges some cylinders (5) between upper longeron (4) and the lower longeron (21).
3. continuous girder bridge cantilever end bay Cast-in-Situ Segment according to claim 1 and 2 and closure segment synchronous construction device, it is characterized in that described supporting mechanism is construction bracket formula structure, it comprises ground (1), support (2) is set on the ground (1), crossbeam (3) is set on the support (2), and support is bowl fastening type full framing or steel pipe column bracket.
4. continuous girder bridge cantilever end bay Cast-in-Situ Segment according to claim 1 and 2 and closure segment synchronous construction device, it is characterized in that described supporting mechanism hangs structure for the construction holder, it comprises the suspension rod (14) of pre-buried setting on the kingpost cantalever and the Support bracket that is connected with abutment pier (16).
5. continuous girder bridge cantilever end bay Cast-in-Situ Segment according to claim 4 and closure segment synchronous construction device is characterized in that described Support bracket comprises that the bracket diagonal brace (11) that is connected with built-in fitting on the abutment pier (16) is connected 12 with the bracket horizontal brace) and the bracket connector (13) that connects the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220149401 CN202658536U (en) | 2012-04-11 | 2012-04-11 | Device for synchronous construction of continuous girder bridge cantilever side span cast-in-situ section and folding section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220149401 CN202658536U (en) | 2012-04-11 | 2012-04-11 | Device for synchronous construction of continuous girder bridge cantilever side span cast-in-situ section and folding section |
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| CN202658536U true CN202658536U (en) | 2013-01-09 |
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| CN 201220149401 Expired - Lifetime CN202658536U (en) | 2012-04-11 | 2012-04-11 | Device for synchronous construction of continuous girder bridge cantilever side span cast-in-situ section and folding section |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215898A (en) * | 2013-04-02 | 2013-07-24 | 天津市市政工程设计研究院 | Variable-cross-section concrete continuous bridge construction method |
| CN103556578A (en) * | 2013-10-14 | 2014-02-05 | 中铁十九局集团有限公司 | Casting mold system for straight line section and side span closure section of continuous beam and building method thereof |
| CN103866698A (en) * | 2014-03-14 | 2014-06-18 | 中铁十一局集团有限公司 | Symmetrical suspension splicing bridge support seat end pseudo-suspension splicing construction method |
| CN104631342A (en) * | 2015-02-15 | 2015-05-20 | 中铁大桥局集团第五工程有限公司 | Device and method for closure construction of girder side span of cable-stayed bridge |
| CN104790302A (en) * | 2015-05-08 | 2015-07-22 | 中南林业科技大学 | Hanging-basket and bent-cap-support matched integral construction method for side span linear segment of high-pier continuous rigid frame bridge |
| CN109736206A (en) * | 2019-01-28 | 2019-05-10 | 宁波交通工程建设集团有限公司 | Wavelike steel webplate continuous bridge end bay closes up cast-in-place support structure and construction method |
| CN110939075A (en) * | 2019-11-12 | 2020-03-31 | 中国铁建大桥工程局集团有限公司 | Combined cast-in-place construction method for straight section support and hanging basket on side of equal-span continuous beam |
| CN111088759A (en) * | 2019-12-24 | 2020-05-01 | 中交二航局第四工程有限公司 | Construction method for steel strand of side span closure section of cast-in-place beam cast by cantilever |
| CN111851318A (en) * | 2020-09-04 | 2020-10-30 | 安徽省交通建设股份有限公司 | Cantilever bridge side span formwork system and construction method thereof |
| CN113373810A (en) * | 2021-05-20 | 2021-09-10 | 山东科技大学 | Side span support structure of continuous T-structure viaduct with upper span of existing line |
| CN113512943A (en) * | 2021-04-13 | 2021-10-19 | 中交二公局东萌工程有限公司 | Continuous rigid frame bridge side span cast-in-place section and closure section construction method |
-
2012
- 2012-04-11 CN CN 201220149401 patent/CN202658536U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215898A (en) * | 2013-04-02 | 2013-07-24 | 天津市市政工程设计研究院 | Variable-cross-section concrete continuous bridge construction method |
| CN103556578A (en) * | 2013-10-14 | 2014-02-05 | 中铁十九局集团有限公司 | Casting mold system for straight line section and side span closure section of continuous beam and building method thereof |
| CN103556578B (en) * | 2013-10-14 | 2015-05-13 | 中铁十九局集团有限公司 | Casting mold system for straight line section and side span closure section of continuous beam and building method thereof |
| CN103866698A (en) * | 2014-03-14 | 2014-06-18 | 中铁十一局集团有限公司 | Symmetrical suspension splicing bridge support seat end pseudo-suspension splicing construction method |
| CN104631342A (en) * | 2015-02-15 | 2015-05-20 | 中铁大桥局集团第五工程有限公司 | Device and method for closure construction of girder side span of cable-stayed bridge |
| CN104790302A (en) * | 2015-05-08 | 2015-07-22 | 中南林业科技大学 | Hanging-basket and bent-cap-support matched integral construction method for side span linear segment of high-pier continuous rigid frame bridge |
| CN109736206A (en) * | 2019-01-28 | 2019-05-10 | 宁波交通工程建设集团有限公司 | Wavelike steel webplate continuous bridge end bay closes up cast-in-place support structure and construction method |
| CN109736206B (en) * | 2019-01-28 | 2023-11-28 | 宁波交通工程建设集团有限公司 | Cast-in-situ bracket structure for bridge side span closure of corrugated steel web continuous beam and construction method |
| CN110939075A (en) * | 2019-11-12 | 2020-03-31 | 中国铁建大桥工程局集团有限公司 | Combined cast-in-place construction method for straight section support and hanging basket on side of equal-span continuous beam |
| CN110939075B (en) * | 2019-11-12 | 2021-09-17 | 中国铁建大桥工程局集团有限公司 | Combined cast-in-place construction method for straight section support and hanging basket on side of equal-span continuous beam |
| CN111088759A (en) * | 2019-12-24 | 2020-05-01 | 中交二航局第四工程有限公司 | Construction method for steel strand of side span closure section of cast-in-place beam cast by cantilever |
| CN111851318A (en) * | 2020-09-04 | 2020-10-30 | 安徽省交通建设股份有限公司 | Cantilever bridge side span formwork system and construction method thereof |
| CN111851318B (en) * | 2020-09-04 | 2021-09-07 | 安徽省交通建设股份有限公司 | Cantilever bridge side span formwork system and construction method thereof |
| CN113512943A (en) * | 2021-04-13 | 2021-10-19 | 中交二公局东萌工程有限公司 | Continuous rigid frame bridge side span cast-in-place section and closure section construction method |
| CN113373810A (en) * | 2021-05-20 | 2021-09-10 | 山东科技大学 | Side span support structure of continuous T-structure viaduct with upper span of existing line |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |