CN114319143A - Bridge top pushes away interim mound structure suitable for in deep soft soil stratum - Google Patents
Bridge top pushes away interim mound structure suitable for in deep soft soil stratum Download PDFInfo
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- CN114319143A CN114319143A CN202111260860.5A CN202111260860A CN114319143A CN 114319143 A CN114319143 A CN 114319143A CN 202111260860 A CN202111260860 A CN 202111260860A CN 114319143 A CN114319143 A CN 114319143A
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Abstract
本发明公开了一种适用于深厚软土地层中的桥梁顶推临时墩结构，其特征在于；所述适用于深厚软土地层中的桥梁顶推临时墩结构分为3个部分，下部为预应力预制管桩，中部为钢筋混凝土承台，上部为钢管桩及型钢垫梁；钢筋混凝土承台将预应力预制管桩和钢管桩采用连接起来，钢筋混凝土承台需要全部或者部分埋于地面以下。本专利具有良好的受力特性，采用预应力预制管桩作为基础，提供竖向承载力。上部采用钢管桩、型钢构成顶推平台，用以放置顶推设备；钢材可以抵抗较大的水平力和水平向的变形。中部采用钢筋混凝土承台，将上下部连接起来形成整体。这种临时墩结构解决了深厚软土地层中要求临时墩承载力大，沉降小，便于施工和拆除的特点，同时节约了施工成本。
The invention discloses a temporary pier structure for bridge pushing in deep soft soil stratum, which is characterized in that; the temporary pier structure for bridge pushing in deep soft soil stratum is divided into three parts, and the lower part is a pre Stressed prefabricated pipe pile, the middle part is reinforced concrete cap, the upper part is steel pipe pile and profiled steel cushion beam; below ground. This patent has good stress characteristics, and uses prestressed prefabricated pipe piles as the foundation to provide vertical bearing capacity. The upper part is made of steel pipe piles and section steel to form a jacking platform for placing jacking equipment; the steel can resist large horizontal force and horizontal deformation. The middle part adopts reinforced concrete bearing platform to connect the upper and lower parts to form a whole. This kind of temporary pier structure solves the characteristics that the temporary pier is required to have large bearing capacity, small settlement, convenient construction and demolition in deep soft soil strata, and saves the construction cost at the same time.
Description
Technical Field
The invention relates to the field of bridge incremental launching construction, in particular to a bridge incremental launching temporary pier structure suitable for deep soft soil strata.
Background
When the bridge is subjected to incremental launching construction, a certain number of temporary piers are required to be arranged, and walking jacks are placed on the temporary piers and used as fulcrums of the bridge in an incremental launching stage to meet the requirement of incremental launching stress of the bridge. The vertical stress of the temporary pier is often larger, less is hundreds of tons, and larger is thousands of tons, and excessive settlement cannot occur under the vertical load. Meanwhile, the temporary pier also needs to have certain horizontal bearing capacity and horizontal deformation resistance.
When the temporary piers are built in a deep soft soil stratum, if a gravity type foundation is adopted to expand the foundation, the foundation is difficult to meet the bearing capacity requirement, and the construction cost is high, so that the pile foundation is preferred. The pile foundation mainly comprises three forms of steel pipes, reinforced concrete piles or prefabricated pipe piles. The steel pipe pile has the advantages of convenient and quick construction, large horizontal bearing capacity and strong deformation resistance. However, for the pile with overlarge vertical bearing capacity, the steel pipe pile is difficult to be inserted and driven to the designed depth, so that the requirement on the bearing capacity is difficult to meet. If the steel pipe pile is inserted and driven too deeply, the later-stage pulling-out is difficult, so that the material loss is large, and the construction cost is increased.
The reinforced concrete pile or the precast tubular pile has the advantages of large vertical bearing capacity and small horizontal bearing capacity and small capacity of resisting horizontal deformation as a temporary pier foundation. When the temporary pier foundation needs to be too much higher than the ground or is in a soft soil stratum, the reinforced concrete pile and the precast tubular pile are not suitable any more.
Disclosure of Invention
Therefore, in order to solve the above-mentioned defects, the invention provides a bridge pushing temporary pier structure suitable for a deep soft soil stratum. When the bridge is subjected to incremental launching construction, a certain number of temporary piers are required to be arranged, and walking jacks are placed on the temporary piers and used as fulcrums of the bridge in an incremental launching stage to meet the requirement of incremental launching stress of the bridge. The vertical stress of the temporary pier is often larger, less is hundreds of tons, and larger is thousands of tons, and excessive settlement cannot occur under the vertical load. Meanwhile, the temporary pier also needs to have certain horizontal bearing capacity and horizontal deformation resistance. This patent provides a top of adaptation deep soft soil layer pushes away interim mound structural style, adopts prestressing force precast tubular pile as the basis, provides vertical bearing capacity. The upper part adopts steel pipe pile, shaped steel to constitute and pushes away the platform for place the pushing away equipment, resist horizontal force, great horizontal force and the deformation of horizontal direction can be resisted to steel. The middle part adopts a reinforced concrete bearing platform to connect the upper part and the lower part to form a whole. The temporary pier structure solves the problems of large bearing capacity, small settlement and convenient construction and dismantling of the temporary pier required in a deep soft soil stratum, and saves the construction cost.
The invention is realized in such a way that a bridge pushing temporary pier structure suitable for a deep soft soil stratum is constructed, and the structure is characterized in that; the bridge pushing temporary pier structure suitable for the deep soft soil stratum is divided into 3 parts, the lower part is a prestressed precast tubular pile, the middle part is a reinforced concrete bearing platform, and the upper part is a steel pipe pile and a steel pad beam; the prestressed precast tubular pile and the steel pipe pile are connected by the reinforced concrete bearing platform, and the reinforced concrete bearing platform needs to be completely or partially buried under the ground.
The bridge pushing temporary pier structure suitable for the deep soft soil stratum is characterized in that a pushing pile is arranged on the top of the bridge pushing temporary pier; the upper part of the structure adopts a steel pipe pile and profile steel to form a pushing platform for placing pushing equipment; the steel can resist larger horizontal force and deformation in the horizontal direction; the middle part adopts a reinforced concrete bearing platform to connect the upper part and the lower part to form a whole.
The bridge pushing temporary pier structure suitable for the deep soft soil stratum is characterized in that a pushing pile is arranged on the top of the bridge pushing temporary pier; and a cushion block is arranged on the profile steel cushion beam.
The bridge pushing temporary pier structure suitable for the deep soft soil stratum is characterized in that a pushing pile is arranged on the top of the bridge pushing temporary pier; the construction process comprises the following steps: inserting and driving a prestressed precast tubular pile (PHC tubular pile) → welding anchoring steel bars at the head of the tubular pile → installing cushion cap steel bars → installing steel pipe embedded parts → pouring cushion cap concrete → installing steel pipes and profile steel distribution beams and cushion beams.
The invention has the following advantages: the invention provides a bridge incremental launching temporary pier structure suitable for a deep soft soil stratum; when the bridge is subjected to incremental launching construction, a certain number of temporary piers are required to be arranged, and walking jacks are placed on the temporary piers and used as fulcrums of the bridge in an incremental launching stage to meet the requirement of incremental launching stress of the bridge. The vertical stress of the temporary pier is often larger, less is hundreds of tons, and larger is thousands of tons, and excessive settlement cannot occur under the vertical load. Meanwhile, the temporary pier also needs to have certain horizontal bearing capacity and horizontal deformation resistance. This patent provides a top of adaptation deep soft soil layer pushes away interim mound structural style, adopts prestressing force precast tubular pile as the basis, provides vertical bearing capacity. The upper part adopts steel pipe pile, shaped steel to constitute and pushes away the platform for place the pushing away equipment, resist horizontal force, great horizontal force and the deformation of horizontal direction can be resisted to steel. The middle part adopts a reinforced concrete bearing platform to connect the upper part and the lower part to form a whole. The temporary pier structure solves the problems of large bearing capacity, small settlement and convenient construction and dismantling of the temporary pier required in a deep soft soil stratum, and saves the construction cost.
This patent has good atress characteristic. The prestressed precast tubular pile is used as a foundation to provide vertical bearing capacity. The upper part adopts a steel pipe pile and profile steel to form a pushing platform for placing pushing equipment; the steel material can resist larger horizontal force and deformation in the horizontal direction. The middle part adopts a reinforced concrete bearing platform to connect the upper part and the lower part to form a whole. The temporary pier structure solves the problems of large bearing capacity, small settlement and convenient construction and dismantling of the temporary pier required in a deep soft soil stratum, and saves the construction cost.
Drawings
Fig. 1 is a longitudinal arrangement view of temporary piers;
FIG. 2 is a schematic cross-sectional view at A in FIG. 1;
FIG. 3 is a schematic cross-sectional view at B in FIG. 1;
fig. 4 is a view of a temporary pier connection configuration.
Wherein: the prestressed precast tubular pile comprises a prestressed precast tubular pile 1, a reinforced concrete bearing platform 2 in the middle, a steel pipe pile 3 on the upper part, a cushion block 4, pushing equipment 5, a tubular pile head welding anchoring steel bar 6 and a steel pipe embedded part 7.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 4, and the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a bridge pushing temporary pier structure suitable for deep soft soil strata by improvement, as shown in figures 1-4, which can be implemented as follows; the bridge pushing temporary pier structure suitable for the deep soft soil stratum is divided into 3 parts, the lower part is a prestressed precast tubular pile 1, the middle part is a reinforced concrete bearing platform 2, and the upper part is a steel pipe pile 3 and a steel pad beam; the prestressed precast tubular pile 1 and the steel pipe pile are connected by the reinforced concrete bearing platform 2, and the reinforced concrete bearing platform 2 needs to be completely or partially buried under the ground.
When in implementation; the upper part of the structure adopts a steel pipe pile and profile steel to form a pushing platform for placing pushing equipment 5; the steel can resist larger horizontal force and deformation in the horizontal direction; the middle part adopts a reinforced concrete bearing platform 2 to connect the upper part and the lower part to form a whole.
When in implementation; and a cushion block 4 is arranged on the profile steel cushion beam.
When in implementation; the construction process comprises the following steps: inserting and driving a prestressed precast tubular pile (PHC tubular pile) → welding anchoring steel bars 6 on a tubular pile head → installing cushion cap steel bars → installing steel pipe embedded parts 7 → pouring cushion cap concrete → installing steel pipes and profile steel distribution beams and cushion beams.
The advantage and the beneficial effect of this patent do: this patent has good atress characteristic. The prestressed precast tubular pile is used as a foundation to provide vertical bearing capacity. The upper part adopts a steel pipe pile and profile steel to form a pushing platform for placing pushing equipment; the steel material can resist larger horizontal force and deformation in the horizontal direction. The middle part adopts a reinforced concrete bearing platform to connect the upper part and the lower part to form a whole. The temporary pier structure solves the problems of large bearing capacity, small settlement and convenient construction and dismantling of the temporary pier required in a deep soft soil stratum, and saves the construction cost.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. A bridge pushing temporary pier structure suitable for deep soft soil stratum is characterized in that a bridge pushing temporary pier structure is provided;
the bridge pushing temporary pier structure suitable for the deep soft soil stratum is divided into 3 parts, the lower part is a prestressed precast tubular pile (1), the middle part is a reinforced concrete bearing platform (2), and the upper part is a steel pipe pile (3) and a profile steel pad beam; the prestressed precast tubular pile (1) and the steel pipe pile are connected by the reinforced concrete bearing platform (2), and the reinforced concrete bearing platform (2) needs to be completely or partially buried under the ground.
2. The bridge pushing temporary pier structure suitable for deep soft soil formations according to claim 1, wherein the bridge pushing temporary pier structure comprises a bridge pushing pile and a bridge pushing pile; the upper part of the structure adopts a steel pipe pile and profile steel to form a pushing platform for placing pushing equipment (5); the steel can resist larger horizontal force and deformation in the horizontal direction; the middle part adopts a reinforced concrete bearing platform (2) to connect the upper part and the lower part to form a whole.
3. The bridge pushing temporary pier structure suitable for deep soft soil formations according to claim 1, wherein the bridge pushing temporary pier structure comprises a bridge pushing pile and a bridge pushing pile; the steel backing beam is provided with a cushion block (4).
4. The bridge pushing temporary pier structure suitable for deep soft soil formations according to claim 1, wherein the bridge pushing temporary pier structure comprises a bridge pushing pile and a bridge pushing pile; the construction process comprises the following steps: inserting and beating a prestressed precast tubular pile (PHC tubular pile) → welding anchoring steel bars (6) at a tubular pile head → installing pile cap steel bars → installing steel pipe embedded parts (7) → pouring pile cap concrete → installing steel pipes, a section steel distribution beam and a cushion beam.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111260860.5A CN114319143A (en) | 2021-10-28 | 2021-10-28 | Bridge top pushes away interim mound structure suitable for in deep soft soil stratum |
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| CN202111260860.5A CN114319143A (en) | 2021-10-28 | 2021-10-28 | Bridge top pushes away interim mound structure suitable for in deep soft soil stratum |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922054A (en) * | 2022-05-31 | 2022-08-19 | 浙江中天恒筑钢构有限公司 | Continuous rigid frame bridge prestressed steel concrete bearing platform structure and construction method thereof |
| CN115977131A (en) * | 2022-12-29 | 2023-04-18 | 南南铝工程有限责任公司 | A new type of prefabricated assembled bridge piers and micro-foundation construction method that can span the urban pipe network |
| CN116359030A (en) * | 2023-06-01 | 2023-06-30 | 广州文船重工有限公司 | Hydraulic test structure of marine LNG liquid cargo tank and design method thereof |
| CN117870776A (en) * | 2024-03-11 | 2024-04-12 | 四川公路桥梁建设集团有限公司 | Bridge pushing real-time detection method and detection device |
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| CN103510475A (en) * | 2013-09-27 | 2014-01-15 | 中铁大桥局股份有限公司 | Long-distance pushing construction method of thee-main-truss steel truss beam in single-connection and double-span modes without guide beam |
| CN205188960U (en) * | 2015-11-22 | 2016-04-27 | 浙江航天管桩有限公司 | Prestressed concrete pipe pile |
| CN210031775U (en) * | 2019-01-31 | 2020-02-07 | 广州市设计院 | Pressure-bearing piles and pile foundations used in soft soil areas |
| CN216405146U (en) * | 2021-10-28 | 2022-04-29 | 四川路桥华东建设有限责任公司 | Bridge top pushes away interim mound structure suitable for in deep soft soil stratum |
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2021
- 2021-10-28 CN CN202111260860.5A patent/CN114319143A/en active Pending
Patent Citations (4)
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| CN103510475A (en) * | 2013-09-27 | 2014-01-15 | 中铁大桥局股份有限公司 | Long-distance pushing construction method of thee-main-truss steel truss beam in single-connection and double-span modes without guide beam |
| CN205188960U (en) * | 2015-11-22 | 2016-04-27 | 浙江航天管桩有限公司 | Prestressed concrete pipe pile |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922054A (en) * | 2022-05-31 | 2022-08-19 | 浙江中天恒筑钢构有限公司 | Continuous rigid frame bridge prestressed steel concrete bearing platform structure and construction method thereof |
| CN114922054B (en) * | 2022-05-31 | 2023-03-10 | 浙江中天恒筑钢构有限公司 | A continuous rigid-frame bridge prestressed steel-concrete cap structure and its construction method |
| CN115977131A (en) * | 2022-12-29 | 2023-04-18 | 南南铝工程有限责任公司 | A new type of prefabricated assembled bridge piers and micro-foundation construction method that can span the urban pipe network |
| CN116359030A (en) * | 2023-06-01 | 2023-06-30 | 广州文船重工有限公司 | Hydraulic test structure of marine LNG liquid cargo tank and design method thereof |
| CN116359030B (en) * | 2023-06-01 | 2023-08-29 | 广州文船重工有限公司 | Hydraulic test structure of marine LNG liquid cargo tank and design method thereof |
| CN117870776A (en) * | 2024-03-11 | 2024-04-12 | 四川公路桥梁建设集团有限公司 | Bridge pushing real-time detection method and detection device |
| CN117870776B (en) * | 2024-03-11 | 2024-06-11 | 四川公路桥梁建设集团有限公司 | Bridge pushing real-time detection method and detection device |
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