CN103938546B - Simply supported non-uniform construction method - Google Patents
Simply supported non-uniform construction method Download PDFInfo
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- CN103938546B CN103938546B CN201310023916.4A CN201310023916A CN103938546B CN 103938546 B CN103938546 B CN 103938546B CN 201310023916 A CN201310023916 A CN 201310023916A CN 103938546 B CN103938546 B CN 103938546B
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Abstract
The present invention discloses a kind of Simply supported non-uniform construction method, specific as follows: to build bridge pier, arranges erection support at described pier coping portion; Prefabricated inverted T-shaped bent cap is lifted on described erection support; Small box girder lifting is shelved on the wing plate of described prefabricated inverted T-shaped bent cap, makes it to become simply-supported state; Gap concreting between the web and both sides small box girder of described prefabricated inverted T-shaped bent cap forms wet seam, completes wearing and stretch-draw of the hogging moment steel bundle between described web top and both sides small box girder top board simultaneously.Simply supported non-uniform structure of the present invention is yet forms both by above-mentioned construction method.The present invention is the advantages such as a kind of structure with common Simply supported non-uniform structure is reliable, good endurance, Bridge Landscape can also be improved, greatly reduce the structure height at the bottom of from bridge floor to bent cap, save under-clearance, simplify construction sequence, shorten Simply supported non-uniform construction method and the structure thereof of construction period.
Description
Technical field
The present invention relates to the technical field of bridge construction and construction, particularly relate to a kind of Simply supported non-uniform construction method.
Background technology
Bridge floor continuous print simple beam structure system due to there is the shortcomings such as bridge floor easily ftractures and with the competition of beam structure system in usually at a disadvantage.Simultaneously because the construction complexity of cast-in-situ concrete continuous beam is loaded down with trivial details, people wish the batch Prefabrication of simply supported beam and the superior function of continuous beam to combine always, the construction speed of continuous beam is accelerated by the mode of beam or plate batch Prefabrication, to save a loaded down with trivial details die process, thereby produce by whole prefabricated across beam slab, set up in place after at end concreting and stretch-draw prestressing force makes it continuous print " simple-supported thencontinuous " construction method, the system formed then is called as " simply-supported-to-continuous structure system ".At present, the bridge of the porous Medium Span of form of structure in high-grade highway (particularly speedway) bridge of Simply supported non-uniform accounts for very large proportion.
Continuously and structure Simply supported non-uniform two kinds of structural systems, the contrast situation of its scheme quality is as shown in the table for comprehensive bridge floor:
As can be seen from the above table, the structural system of Simply supported non-uniform, except be slightly inferior to the continuous scheme of bridge floor in speed of application and construction costs except, is all better than the continuous scheme of bridge floor in other rigidity in structure, durability, Bridge Landscape, engineer applied.Bridge on speedway, and be the more section of heavy vehicle, this has higher requirement to the aspect such as reliability of structure, durability.In sum, small box girder Simply supported non-uniform is better structural concept.
The construction process of common Simply supported non-uniform structure is generally simple-supported thencontinuous bridge construction, and its idiographic flow is as follows:
1. the prefabricated employing factorial praluction of girder, after beam slab concrete strength reaches 100% of design strength, carry out the prestress wire stretch-draw of positive bending moment district, stretch-draw terminates laggard row hole path pressure grouting.
2. before the steel strand tension of hogging moment area, temporary support is set, beam slab is hole-specifically arranged on temporary support, make it to become simply-supported state, simultaneously by permanent bearing installation in position.
3. jointing section reinforcing bar, arranges joint steel bundle bellows and is through in bellows by steel strand, the concreting when day temperature≤15 DEG C.When concrete intensity reaches 100% of design strength, stretch-draw hogging moment area twisted wire mud jacking.
4. temporary support is removed, complete by freely-supported to continuous print system transform.
Have the following advantages according to the Simply supported non-uniform structure tool that above-mentioned flow process construction is formed:
1. have rigidity large, be out of shape the advantages such as little, shrinkage joint is few and it is comfortable to drive a vehicle, the good endurance of structure.
2. the prestressed strand of simply supported beam carries out stretch-draw in factory, and the prestressed strand of hogging moment area is arranged and stretch-draw is all carried out on girder, only needs hanging device to lift by crane girder, decreases construction equipment, can avoid again the ground obstacle of stretch-draw prestressing force steel Shu Zaocheng.
3. precast beam can adopt standardized structural element, carries out batch production and unifies production and administration, be conducive to technical operation, save the engineering time, the reduction of erection time, increase economic efficiency.
The small box girder Simply supported non-uniform structural system of current application has obvious advantage in the rigidity of structure, durability, engineer applied, but also there is the problem that bent cap height is excessive, construction period is relatively grown.Conventional Simply supported non-uniform structure still has following weak point:
1. must design the larger bent cap of the scale of construction, according to rectangle bent cap, bent cap height about reaches 3.8m as calculated, and for meeting under-clearance, the program requires that floor elevation promotes about 2m; And bent cap is clumsy, sense of depression is strong, and landscape effect is very poor.
2. generally will carry out the system transform of bearing, construction comparatively bothers.
3. the workload of the reinforcing bar binding of crossbeam and concreting is comparatively large, can cause the prolongation of duration.
4. also separately have a kind of Dun Ding without bent cap, prefabricated small box girder is first supported on falsework, the method for striking again after waiting to have built crossbeam (dividing into bearing).But this engineering method support stability requires high, and falsework is built and demolition expense expenses of labour material; Continuous beam fall frame time more difficult, safety is relatively poor, easily brings potential safety hazard, and for there being the section of heavy traffic under bridge, setting up of support also can have a strong impact on traffic.
Therefore, for current Simply supported non-uniform construction method and structure thereof, there is a need to carry out Improvement in the hope of further optimization.Those skilled in the art is devoted to develop a kind of Simply supported non-uniform construction method and structure thereof always, above-mentioned deficiency can be overcome, the advantages such as the structure not only with common Simply supported non-uniform structure is reliable, good endurance, Bridge Landscape can also be improved, greatly reduce the structure height at the bottom of from bridge floor to bent cap, save under-clearance, simplify construction sequence, shorten construction period.
Summary of the invention
Because above-mentioned the deficiencies in the prior art, the present invention proposes the advantages such as a kind of structure with common Simply supported non-uniform structure is reliable, good endurance, Bridge Landscape can also be improved, greatly reduce the structure height at the bottom of from bridge floor to bent cap, save under-clearance, simplify construction sequence, shorten Simply supported non-uniform construction method and the structure thereof of construction period.
For achieving the above object, the invention provides a kind of Simply supported non-uniform construction method, specific as follows: to build bridge pier, at described pier coping portion, erection support is set; Prefabricated inverted T-shaped bent cap is lifted on described erection support; Small box girder lifting is shelved on the wing plate of described prefabricated inverted T-shaped bent cap, makes it to become simply-supported state; Gap concreting between the web and both sides small box girder of described prefabricated inverted T-shaped bent cap forms wet seam, completes wearing and stretch-draw of the hogging moment steel bundle between described web top and both sides small box girder top board simultaneously.
As a further improvement on the present invention, described prefabricated inverted T-shaped bent cap is lifting after to described erection support, and the length direction along web carries out the stretch-draw of first prestressed strand.
As a further improvement on the present invention, after small box girder lifting is shelved on the wing plate of described prefabricated inverted T-shaped bent cap, the length direction along web carries out the stretch-draw of second batch prestressed strand.
As a further improvement on the present invention, complete hogging moment steel bundle wear with stretch-draw after, in described wet seam, carry out the stretch-draw of the 3rd batch of prestressed strand.
As a further improvement on the present invention, after the stretch-draw completing the 3rd batch of prestressed strand, lay reinforced concrete pavement layer, waterproofing course and asphalt concrete pavement layer successively from lower to upper at the upper surface of described small box girder.
The present invention also proposes a kind of Simply supported non-uniform structure, it comprises: bridge pier, erection support, small box girder and prefabricated inverted T-shaped bent cap, described erection support is arranged on the top of described bridge pier, described prefabricated inverted T-shaped bent cap is arranged on described erection support, described small box girder is shelved on the wing plate of the prefabricated inverted T-shaped bent cap on two adjacent bridge piers, connected as one by cast-in-situ concrete between described small box girder and described prefabricated inverted T-shaped bent cap, between the web top of described prefabricated inverted T-shaped bent cap and both sides small box girder top board, stretch-draw has hogging moment steel bundle.
As a further improvement on the present invention, the length direction stretch-draw along web in described prefabricated inverted T-shaped bent cap has prestressed strand.
As a further improvement on the present invention, in the concrete of filling between the web of described prefabricated inverted T-shaped bent cap and the small box girder of both sides, stretch-draw has prestressed strand.
As a further improvement on the present invention, the upper surface of described small box girder is equipped with reinforced concrete pavement layer, waterproofing course and asphalt concrete pavement layer from lower to upper successively.
As a further improvement on the present invention, rubber strip is provided with between the wing plate of described small box girder and described prefabricated inverted T-shaped bent cap.
The beneficial effect of Simply supported non-uniform structure of the present invention and construction method thereof has as follows:
1. reliable, the good endurance of structure of the present invention, the bent cap that Simply supported non-uniform structure adopts is prefabricated inverted T-shaped bent cap, greatly reduce the structure height at the bottom of from bridge floor to bent cap, save under-clearance, improve Bridge Landscape, and adopt construction method of the present invention, short construction period, construction sequence is simply effective, and labour intensity is little.
2. bent cap of the present invention adopts prefabrication, and the mode that on-the-spot lifting is installed will make the negative effect of Coping Construction to traffic above-ground drop to minimum, avoids and causes harmful effect to traffic above-ground.Needed for work progress, concreting amount is few simultaneously, therefore effectively can reduce workload further, shortens construction period.
3. the present invention is equipped with hogging moment steel bundle and prestressed strand between described small box girder and described prefabricated inverted T-shaped bent cap, further increases reliability of the present invention.
Be described further below with reference to the technique effect of accompanying drawing to design of the present invention, concrete structure and generation, to understand object of the present invention, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is the construction evolution of the present embodiment Simply supported non-uniform construction method.
Fig. 2 is the structural representation of the present embodiment Simply supported non-uniform structure.
Fig. 3 is the A place partial enlarged drawing of Fig. 2.
Detailed description of the invention
Fig. 1 is the construction evolution of the present embodiment Simply supported non-uniform construction method.The present embodiment proposes a kind of Simply supported non-uniform construction method, and shown in composition graphs 1, Specific construction flow process is as follows:
Step one: build bridge pier 1, arranges erection support 3 at bridge pier 1 top; And prefabricated inverted T-shaped bent cap 2 is lifted on erection support 3.
Step 2: small box girder 4 lifting is shelved on the wing plate 22 of prefabricated inverted T-shaped bent cap 2, makes it to become simply-supported state.
Step 3: the gap concreting between the web 21 and both sides small box girder 4 of prefabricated inverted T-shaped bent cap 2 forms wet seam 6, completes wearing and stretch-draw of the hogging moment steel bundle 5 between web 21 top and both sides small box girder top board simultaneously.
By above-mentioned three steps, can complete the construction of Simply supported non-uniform, this construction method simplifies construction sequence as seen, substantially reduces construction period.
As the further embodiment of the present embodiment, lifting after to erection support 3 at the prefabricated inverted T-shaped bent cap 2 of described step one, the length direction along web 21 carries out the stretch-draw of first prestressed strand 8.Exemplary, as shown in Figure 1, first prestressed strand 8 is divided into two vertical setting of types to arrange, and every vertical setting of types comprises three prestressed strands.
As the further embodiment of the present embodiment, after small box girder 4 lifting of described step 2 is shelved on the wing plate 22 of prefabricated inverted T-shaped bent cap 2, the length direction along web 21 carries out the stretch-draw of second batch prestressed strand 7.Exemplary, as shown in Figure 1, second batch prestressed strand 7 is three prestressed strands is that a vertical setting of types is arranged in the middle of two vertical setting of types of first prestressed strand 8.
As the further embodiment of the present embodiment, described step 3 complete hogging moment steel bundle 5 wear with stretch-draw after, in wet seam 6, carry out the stretch-draw of the 3rd batch of prestressed strand 9.Exemplary, as shown in Figure 1, the 3rd batch of prestressed strand 9 is divided into two vertical setting of types to arrange, and every vertical setting of types comprises three prestressed strands, and the left and right two each correspondence in seam 6 that wets arranges a vertical setting of types.Then step 4 is carried out: lay reinforced concrete pavement layer, waterproofing course and asphalt concrete pavement layer successively from lower to upper at the upper surface of small box girder 4.Of course, in other specific embodiments, small box girder 4 can also need according to working design the construction carrying out other ancillary facilities, as the construction of shrinkage joint or other construction bridges ancillary facilities, it is the general prior art in this area, those of ordinary skill in the art can apparently construct, and do not repeat them here.
According to above-mentioned construction method, the present embodiment also proposes a kind of Simply supported non-uniform structure, as shown in Figures 2 and 3, the Simply supported non-uniform structure of the present embodiment comprises: bridge pier 1, erection support 3, small box girder 4 and prefabricated inverted T-shaped bent cap 2, erection support 3 is arranged on the top of bridge pier 1, prefabricated inverted T-shaped bent cap 2 is arranged on erection support 3, small box girder 4 is shelved on the wing plate 22 of the prefabricated inverted T-shaped bent cap 2 on two adjacent bridge piers 1, connected as one by cast-in-situ concrete between small box girder 4 and prefabricated inverted T-shaped bent cap 2, between web 21 top of prefabricated inverted T-shaped bent cap 2 and the top board of both sides small box girder 4, stretch-draw has hogging moment steel bundle 5.
As the further embodiment of the present embodiment, the length direction stretch-draw along web 21 in prefabricated inverted T-shaped bent cap 2 has prestressed strand.Exemplary, in the web 21 of the prefabricated inverted T-shaped bent cap 2 of the present embodiment, stretch-draw has first prestressed strand 8 and second batch prestressed strand 7, is combined to form three row three row prestressed strands.
As the further embodiment of the present embodiment, in the concrete of filling between the web 21 of prefabricated inverted T-shaped bent cap 2 and the small box girder 4 of both sides, stretch-draw has prestressed strand.Prestressed strand herein refers to the 3rd batch of prestressed strand 9 be arranged in wet seam 6.
As the further embodiment of the present embodiment, between the wing plate 22 of small box girder 4 and prefabricated inverted T-shaped bent cap 2, be provided with rubber strip.
As the further embodiment of the present embodiment, the upper surface of small box girder 4 is equipped with reinforced concrete pavement layer, waterproofing course and asphalt concrete pavement layer from lower to upper successively.Of course, in other specific embodiments, small box girder 4 can also need according to working design the construction carrying out other ancillary facilities, as the construction of shrinkage joint or other construction bridges ancillary facilities, it is the general prior art in this area, those of ordinary skill in the art can apparently construct, and do not repeat them here.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technician in the art, all should by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (5)
1. a Simply supported non-uniform construction method, is characterized in that:
Build bridge pier, erection support is set at described pier coping portion;
Prefabricated inverted T-shaped bent cap is lifted on described erection support;
Small box girder lifting is shelved on the wing plate of described prefabricated inverted T-shaped bent cap, makes it to become simply-supported state;
Gap concreting between the web and both sides small box girder of described prefabricated inverted T-shaped bent cap forms wet seam, completes wearing and stretch-draw of the hogging moment steel bundle between described web top and both sides small box girder top board simultaneously.
2. Simply supported non-uniform construction method as claimed in claim 1, is characterized in that: described prefabricated inverted T-shaped bent cap is lifting after to described erection support, and the length direction along web carries out the stretch-draw of first prestressed strand.
3. Simply supported non-uniform construction method as claimed in claim 2, is characterized in that: after small box girder lifting is shelved on the wing plate of described prefabricated inverted T-shaped bent cap, the length direction along web carries out the stretch-draw of second batch prestressed strand.
4. Simply supported non-uniform construction method as claimed in claim 3, is characterized in that: complete hogging moment steel bundle wear with stretch-draw after, in described wet seam, carry out the stretch-draw of the 3rd batch of prestressed strand.
5. Simply supported non-uniform construction method as claimed in claim 4, it is characterized in that: after the stretch-draw completing the 3rd batch of prestressed strand, lay reinforced concrete pavement layer, waterproofing course and asphalt concrete pavement layer successively from lower to upper at the upper surface of described small box girder.
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| CN201310023916.4A CN103938546B (en) | 2013-01-23 | 2013-01-23 | Simply supported non-uniform construction method |
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| CN201310023916.4A CN103938546B (en) | 2013-01-23 | 2013-01-23 | Simply supported non-uniform construction method |
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| CN103938546B true CN103938546B (en) | 2016-02-10 |
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| CN107237260A (en) * | 2017-08-11 | 2017-10-10 | 上海市城市建设设计研究总院（集团）有限公司 | Structure is longitudinally continuous using the floorings of UHPC clad cans |
| CN108625281A (en) * | 2018-04-12 | 2018-10-09 | 中国十七冶集团有限公司 | A kind of wet seam connection method of simple-supported thencontinuous bridge |
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| CN111926720B (en) * | 2020-08-12 | 2022-01-25 | 中建七局交通建设有限公司 | Construction method suitable for continuous steel-structure cantilever beam closure in loess area |
| CN111877182B (en) * | 2020-09-03 | 2021-09-14 | 广东省建筑设计研究院有限公司 | Novel construction method for upper structure of multi-chamber continuous UHPC box girder bridge |
| CN113931057B (en) * | 2021-03-19 | 2023-01-24 | 宁波市政工程建设集团股份有限公司 | Tenon-and-mortise connected prefabricated small box girder type hidden cover beam and construction method thereof |
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| CN113638304B (en) * | 2021-07-13 | 2022-10-25 | 宁波市政工程建设集团股份有限公司 | Concrete beam type bridge hidden cover beam structure system and construction method thereof |
| CN113652966B (en) * | 2021-07-13 | 2022-11-25 | 宁波市政工程建设集团股份有限公司 | Construction method of full-prefabricated assembly type concrete beam type bridge structure system |
| CN114369994B (en) * | 2021-09-26 | 2022-11-25 | 宁波市政工程建设集团股份有限公司 | Fully-prefabricated small box girder type invisible bent cap structure system and construction method thereof |
| CN114016423A (en) * | 2021-11-25 | 2022-02-08 | 上海市政工程设计研究总院（集团）有限公司 | Construction method for simply supporting hidden cover beam and then continuously constructing small box beam |
| CN114232449A (en) * | 2022-01-13 | 2022-03-25 | 福州大学 | Bridge deck structure at inverted T-shaped cover beam of simply supported steel-concrete composite beam bridge and construction method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327108A (en) * | 2001-07-19 | 2001-12-19 | 大连理工大学 | First simply supporting and then continuously tensioning construction technology for post-crossing long-bundle prestressed rib |
| CN101225639A (en) * | 2008-01-28 | 2008-07-23 | 上海市城市建设设计研究院 | Construction technology for freely-supported variable continuous box-beam structure and freely-supported variable continuous box-beam structure thereof |
| CN101298757A (en) * | 2008-06-13 | 2008-11-05 | 东南大学 | Method for changing old simple supported beam bridge into continuous beam bridge |
| JP2009041271A (en) * | 2007-08-09 | 2009-02-26 | Ps Mitsubishi Construction Co Ltd | Construction method for bridge |
| CN101942808A (en) * | 2010-09-30 | 2011-01-12 | 长沙理工大学 | Construction technology for simply supported and continuously supported external prestressed continuous beam bridge T-shaped section |
| CN102021885A (en) * | 2011-01-04 | 2011-04-20 | 上海市城市建设设计研究院 | Bridge deck continuous seam structure |
| CN102021889A (en) * | 2010-12-16 | 2011-04-20 | 上海市城市建设设计研究院 | Bridge erection method |
-
2013
- 2013-01-23 CN CN201310023916.4A patent/CN103938546B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327108A (en) * | 2001-07-19 | 2001-12-19 | 大连理工大学 | First simply supporting and then continuously tensioning construction technology for post-crossing long-bundle prestressed rib |
| JP2009041271A (en) * | 2007-08-09 | 2009-02-26 | Ps Mitsubishi Construction Co Ltd | Construction method for bridge |
| CN101225639A (en) * | 2008-01-28 | 2008-07-23 | 上海市城市建设设计研究院 | Construction technology for freely-supported variable continuous box-beam structure and freely-supported variable continuous box-beam structure thereof |
| CN101298757A (en) * | 2008-06-13 | 2008-11-05 | 东南大学 | Method for changing old simple supported beam bridge into continuous beam bridge |
| CN101942808A (en) * | 2010-09-30 | 2011-01-12 | 长沙理工大学 | Construction technology for simply supported and continuously supported external prestressed continuous beam bridge T-shaped section |
| CN102021889A (en) * | 2010-12-16 | 2011-04-20 | 上海市城市建设设计研究院 | Bridge erection method |
| CN102021885A (en) * | 2011-01-04 | 2011-04-20 | 上海市城市建设设计研究院 | Bridge deck continuous seam structure |
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