CN209855263U - Assembling construction support for steel truss girder crossing existing road - Google Patents
Assembling construction support for steel truss girder crossing existing road Download PDFInfo
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- CN209855263U CN209855263U CN201822147539.6U CN201822147539U CN209855263U CN 209855263 U CN209855263 U CN 209855263U CN 201822147539 U CN201822147539 U CN 201822147539U CN 209855263 U CN209855263 U CN 209855263U
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- door opening
- existing road
- steel truss
- truss girder
- steel
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Abstract
An assembling construction support for a steel truss girder to span an existing road comprises a door opening, buttresses and a scaffold auxiliary system; the door opening sets up below waiting to build the steel truss and is located existing road top, and the buttress setting is on the left and right sides of door opening outside, and the left and right both sides of door opening outside set up scaffold auxiliary system. The door opening comprises two door opening strip foundations, a plurality of stand columns, two distribution beams and a plurality of cross beams; door opening bar basis sets up in the door opening left and right both sides, and left and right both sides door opening bar basis up end symmetry sets up many stands, and the upper end of many left sides stands and the upper end of many right side stands set up a distribution roof beam respectively, and the up end of distribution roof beam just lies in and sets up the crossbeam directly over the stand that left and right bilateral symmetry set up. The steel truss bridge is simple in structure, quick in assembling and splicing, beneficial to shortening the construction period, and capable of being used for bridges with steel trusses orthogonal to the existing roads and bridges with steel trusses obliquely crossed with the existing roads. The left lane and the right lane below the support can be simultaneously met, and the construction safety is ensured.
Description
Technical Field
The utility model belongs to the technical field of the bridge construction, a construction support of assembling of existing road is strideed across to steel longeron specifically is provided.
Background
When a steel truss girder spans an existing road, construction methods such as a pushing (dragging) method and a road-crossing splicing method are generally adopted. When the cross-road splicing method is adopted for construction, a construction support needs to be erected, in order to ensure that the existing road passes through during construction, a 6 m-wide double door opening is usually adopted, and a left lane and a right lane below the support pass through during construction. For existing roads with more than two lanes, the reduction in the number of lanes may cause traffic congestion. Meanwhile, if the number of the door openings is increased blindly, driving safety hidden dangers are inevitably brought, the chance that the vehicle collides with the support is increased, and even driving accidents occur. At this time, a construction bracket having a larger span is required.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide an assembling construction bracket of a steel truss girder crossing the existing road; when the support is used for steel truss girder assembling construction, smooth passing of the left lane and the right lane below the support can be simultaneously met, and driving safety and construction safety are guaranteed.
The utility model provides a technical scheme as follows that above-mentioned technical problem took: the utility model provides a construction support is assembled that existing road is strideed across to steel longeron which characterized in that: comprises a door opening, a buttress and a scaffold auxiliary system; the door opening sets up below waiting to build the steel truss and is located existing road top, and the buttress setting is on the left and right sides of door opening outside, and the left and right both sides of door opening outside set up scaffold auxiliary system.
The door opening is used for enabling the steel truss girder to be built to cross the existing road, and the normal driving of vehicles from the existing road is guaranteed in the process of building the steel truss girder. The net width of a single door opening can be 8-9 m, and the requirement of two lanes of the existing road can be fully met. When a left door opening and a right door opening are adopted, the four-lane traffic of the existing road can be met.
The door opening comprises two door opening strip foundations, a plurality of stand columns, two distribution beams and a plurality of cross beams; door opening bar basis sets up in the door opening left and right both sides, and left and right both sides door opening bar basis up end symmetry sets up many stands, and the upper end of many left sides stands and the upper end of many right side stands set up a distribution roof beam respectively, and the up end of distribution roof beam just lies in and sets up the crossbeam directly over the stand that left and right bilateral symmetry set up.
The door opening bar-shaped foundation is arranged on two sides of an existing road, the foundation is higher than the ground by more than 0.6m, the door opening bar-shaped foundation is used for arranging the stand column, and the accident that the stand frame collapses caused by the direct collision of the tire of a passing vehicle on the stand column can be avoided.
The bottom of the bar-shaped foundation of the door opening is provided with a drain hole, and accumulated water on the road surface of the existing road is removed in construction in rainy seasons.
The buttress is arranged on the outer side of the door opening and is used for supporting a stress point during the assembly construction of the steel truss girder.
The scaffold auxiliary system adopts a bowl-buckle type scaffold, and wood boards are laid on the upper portion of the scaffold auxiliary system and the upper portion of the cross beam in a full-covering mode, so that an operation platform is provided for constructors, and the condition that falling objects in high altitude injure people can be prevented.
The utility model discloses mainly have following beneficial effect: when the steel truss girder is assembled, the left lane and the right lane below the support can be simultaneously passed, and the construction safety can be guaranteed. The utility model discloses simple structure, the spelling is quick, is favorable to the reduction of erection time, can be used for the bridge of steel longeron and existing road quadrature, also can be used for the bridge of steel longeron and existing road skew.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a side view of the door opening;
FIG. 4 is a schematic view of the structural relationship of the steel truss girder assembling construction of the present invention;
fig. 5 is a left side view of fig. 4.
In the figure: 1-door opening, 101-door opening bar foundation, 102-upright post, 1021-left upright post, 1022-right upright post, 103-distribution beam, 104-crossbeam, 105-crossbeam, 106-bracing, 107-drain hole, 2-buttress, 201-buttress foundation, 202-flange, 3-scaffold auxiliary system, 4-protection wood board, 5-splicing pedestal, 6-pier, 7-steel truss beam, H-foundation height, W-door opening net width.
Detailed Description
As shown in fig. 1 and 2: an assembly construction support for a steel truss girder to cross an existing road comprises a door opening 1, buttresses 2 and a scaffold auxiliary system 3; referring to fig. 4, the door opening 1 is arranged below the steel truss girder 7 to be built and above the existing road, the buttresses 2 are arranged on the left and right sides outside the door opening 1, and the scaffold auxiliary systems 3 are arranged on the left and right sides outside the door opening 1. The assembling construction support can be used for bridges with the steel trussed beams orthogonal to the existing roads and can also be used for bridges with the steel trussed beams obliquely crossed with the existing roads. The embodiment is used for the bridge of the steel truss girder and the existing road skew.
The embodiment is provided with two door openings 1, so that the four-lane traffic of the existing road can be met simultaneously; a scaffold auxiliary system 3 is also arranged between the two door openings 1, and the scaffold auxiliary system 3 of the embodiment is provided with three areas; a plurality of buttresses 2 are arranged outside the door opening. The net width W of a single door opening is 8-9 m, and the requirement of two lanes of the existing road can be fully met.
Referring to fig. 1 to 4: the door opening 1 comprises two door opening bar foundations 101, a plurality of upright posts 102, two distribution beams 103 and a plurality of cross beams; door opening bar foundation 101 sets up in door opening 1 left and right both sides, and left and right both sides door opening bar foundation 101 up end symmetry sets up many stands 102, and the upper end of many left sides stands 1021 and the upper end of many right sides stands 1022 set up a distribution beam 103 respectively, and the up end of distribution beam 103 just lies in and sets up the crossbeam directly over the stand 102 that left and right bilateral symmetry set up. The door opening bar-shaped foundation 101, the upright post 102 and the distribution beam 103 are arranged in a direction parallel to the existing road.
Referring to fig. 2 and 3: the cross beam is made of I-shaped steel and is used for supporting stress points during steel truss beam assembling construction and providing protection for vehicles passing under a bridge to be built during construction. The cross beams comprise a first cross beam 104 and a second cross beam 105; the first cross beam 104 is composed of two to four double-spliced I-shaped steels arranged densely, and the second cross beam 105 is composed of two to four simplex I-shaped steels arranged dispersedly; the first cross beam 104 and the second cross beam 105 are arranged at intervals, namely a group of densely arranged two-four double-spliced I-shaped steel is arranged, and then two-four simplex I-shaped steel is arranged; then a group of densely arranged two-four double-spliced I-shaped steel is arranged, and then two-four simplex I-shaped steel is arranged. First crossbeam 104 is used for supporting the stress point when the steel truss is assembled and is under construction, and first crossbeam 104 and No. two crossbeams 105 are used for providing the protection for the vehicle of passing under the bridge jointly. The first beam 104 of the present embodiment is composed of three densely arranged double-spliced i-beams, and the second beam 105 is three sparsely arranged simplex i-beams.
The door opening bar foundation 101 arranged on the left side and the right side comprises an underground part and a part above the ground, the height H of the part above the ground is more than 0.6m, and the upright post is arranged on the upper end surface of the door opening bar foundation, so that the problem that the upright post is collapsed due to the fact that the upright post is directly collided by the passing vehicle tires can be avoided.
As a perfection of the present invention, see fig. 3: the bottom of the door opening strip-shaped foundation 101 is provided with a drain hole 107 for draining accumulated water on the road surface of the existing road during construction in rainy seasons.
As a further improvement of the present invention, in order to enhance the strength of the column, see fig. 3: cross bracing 106 is arranged between the upright posts 102, and the upright posts 102 are connected into a whole by the bracing 106; the vertical columns 102 for supporting the distribution beams 103 are made of steel pipes, and the diagonal braces 106 are made of angle steels or channel steels.
Buttress 2 that sets up in door opening 1 outside left and right sides is a plurality of, and buttress foundation 201 is set up to buttress 2 bottom, and the top of buttress 2 sets up steel sheet flange 202. One buttress is a single steel pipe or four steel pipes which are arranged in a rectangular shape, and the diameter of each steel pipe is determined after force checking calculation.
Referring to fig. 1, 2 and 4, when there is a central division zone of an existing road, two door openings 1 are separately provided, and a scaffold auxiliary system 3 is disposed between the two door openings 1 and 3 regions outside the two door openings 1. When the existing road has no central division strip, the two door openings 1 are close together, and the scaffolding auxiliary system 3 is arranged in 2 areas outside the two door openings 1.
As shown in fig. 4 and 5: when steel longeron 7 was assembled, at first the utility model discloses the top surface full spread protection plank 4 lays protection plank 4 in 3 tops of scaffold frame auxiliary system and crossbeam top all standing promptly, for constructor provides operation platform, ensures construction safety to for the current vehicle on existing road provides the protection, prevent that the high altitude junk from causing the injury. Then be in the utility model discloses a plurality of pedestal 5 of assembling are arranged to the top surface, assemble pedestal 5 and be used for supporting steel longeron 7 and transmit the weight of steel longeron 7 for the utility model discloses. When the splicing pedestal 5 is positioned above the door opening 1, the splicing pedestal 5 is arranged on the upper end surface of a first cross beam 104 consisting of two to four densely arranged double-spliced I-beams; when the splicing table seat 5 is positioned outside the range of the door opening 1, the splicing table seat 5 is arranged on the upper end face of the steel plate flange 202, and the buttress 2 is utilized to support the splicing table seat 5; the erection block bases 5 located at both ends of the steel girder 7 are placed on the upper end surfaces of the piers 6, and the erection block bases 5 are supported by the piers 6.
The splicing table seat 5 is formed by stacking square timbers. After the steel trussed beams 7 are assembled, a jack is arranged on the upper end face of the pier 6, the steel trussed beams 7 are integrally jacked up, the assembling pedestal 5 is disassembled, the steel trussed beams 7 are descended to the top face of the pier 6 through the jack, and the steel trussed beams 7 are finally placed in place.
Claims (10)
1. The utility model provides a construction support is assembled that existing road is strideed across to steel longeron which characterized in that: comprises a door opening (1), buttresses (2) and a scaffold auxiliary system (3); door opening (1) sets up below waiting to build steel truss (7) and is located existing road top, buttress (2) set up in door opening (1) outside left and right sides, and door opening (1) outside left and right both sides set up scaffold auxiliary system (3).
2. An assembly construction bracket of a steel truss girder across an existing road according to claim 1, wherein: two door openings (1) are provided; a scaffold auxiliary system (3) is also arranged between the two door openings (1).
3. An assembly construction bracket of a steel truss girder across an existing road according to claim 2, wherein: the door opening (1) comprises two door opening strip foundations (101), a plurality of upright posts (102), two distribution beams (103) and a plurality of cross beams; the door opening strip foundation 101 is arranged on the left side and the right side of a door opening (1), a plurality of upright columns (102) are symmetrically arranged on the upper end faces of the door opening strip foundation (101) on the left side and the right side, a distribution beam (103) is respectively arranged at the upper ends of a plurality of left upright columns (1021) and the upper ends of a plurality of right upright columns (1022), and a cross beam is arranged on the upper end face of the distribution beam (103) and is positioned right above the upright columns (102) symmetrically arranged on the left side and the right side; the door opening strip-shaped foundation (101), the upright post (102) and the distribution beam (103) are arranged along the direction parallel to the existing road.
4. An assembly construction bracket of a steel truss girder across an existing road according to claim 3, wherein: the cross beam comprises a first cross beam (104) and a second cross beam (105); the first cross beam (104) is composed of two to four double-spliced I-shaped steels which are densely arranged, and the second cross beam (105) is composed of two to four single I-shaped steels which are arranged in an sparse way.
5. An assembly construction bracket of a steel truss girder across an existing road according to claim 4, wherein: the first beam (104) and the second beam (105) are arranged at intervals.
6. An assembly construction bracket of a steel truss girder across an existing road according to claim 5, wherein: the bottom of the door opening strip-shaped foundation (101) is provided with a drain hole (107).
7. An assembly construction bracket of a steel truss girder across an existing road according to claim 6, wherein: the inclined struts (106) are arranged between the upright columns (102) in a crossed mode, and the upright columns (102) are connected into a whole through the inclined struts (106).
8. An assembly construction bracket of a steel truss girder across an existing road according to claim 7, wherein: the bottom of the buttress (2) is provided with a buttress foundation (201), and the top of the buttress (2) is provided with a steel plate flange (202).
9. An assembly construction bracket of a steel truss girder across an existing road according to claim 8, wherein: and protective wood boards (4) are fully paved above the scaffold auxiliary system (3) and the cross beam.
10. An assembly construction bracket of a steel truss girder across an existing road according to claim 9, wherein: the upper end face of the first cross beam (104) is provided with a splicing pedestal (5), and the upper end face of the steel plate flange (202) is provided with the splicing pedestal (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822147539.6U CN209855263U (en) | 2018-12-20 | 2018-12-20 | Assembling construction support for steel truss girder crossing existing road |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822147539.6U CN209855263U (en) | 2018-12-20 | 2018-12-20 | Assembling construction support for steel truss girder crossing existing road |
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| Publication Number | Publication Date |
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| CN209855263U true CN209855263U (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822147539.6U Active CN209855263U (en) | 2018-12-20 | 2018-12-20 | Assembling construction support for steel truss girder crossing existing road |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667432A (en) * | 2018-12-20 | 2019-04-23 | 中铁二十局集团第二工程有限公司 | Steel truss girder crosses over the assembling construction bracket of existing road |
| CN111335089A (en) * | 2020-03-05 | 2020-06-26 | 中铁十九局集团广州工程有限公司 | Construction method of traffic door opening in bridge road cross-line construction |
| CN115198646A (en) * | 2022-07-14 | 2022-10-18 | 中国十九冶集团有限公司 | Method for erecting vehicle-running channel for constructing bridge |
-
2018
- 2018-12-20 CN CN201822147539.6U patent/CN209855263U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667432A (en) * | 2018-12-20 | 2019-04-23 | 中铁二十局集团第二工程有限公司 | Steel truss girder crosses over the assembling construction bracket of existing road |
| CN111335089A (en) * | 2020-03-05 | 2020-06-26 | 中铁十九局集团广州工程有限公司 | Construction method of traffic door opening in bridge road cross-line construction |
| CN111335089B (en) * | 2020-03-05 | 2021-06-08 | 中铁十九局集团广州工程有限公司 | Construction method of traffic door opening in bridge road cross-line construction |
| WO2021114689A1 (en) * | 2020-03-05 | 2021-06-17 | 中铁十九局集团广州工程有限公司 | Construction method for traffic gate in bridge road flyover construction |
| CN115198646A (en) * | 2022-07-14 | 2022-10-18 | 中国十九冶集团有限公司 | Method for erecting vehicle-running channel for constructing bridge |
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