CN208472592U - Close to the steel pipe pile reinforced construction of deep basal pit bridge friction pile - Google Patents

Close to the steel pipe pile reinforced construction of deep basal pit bridge friction pile Download PDF

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Publication number
CN208472592U
CN208472592U CN201820309821.7U CN201820309821U CN208472592U CN 208472592 U CN208472592 U CN 208472592U CN 201820309821 U CN201820309821 U CN 201820309821U CN 208472592 U CN208472592 U CN 208472592U
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China
Prior art keywords
pile
steel
concrete
newly
bridge friction
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Application number
CN201820309821.7U
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Chinese (zh)
Inventor
聂华
王成
房师涛
任跃勤
祝全兵
李宗奇
吴建军
钟瑜
杨泳森
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Chengdu Hydroelectric Power Project Co Ltd Of Sinohydro Engineering Bureau 7
PowerChina Railway Construction Co Ltd
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Chengdu Hydroelectric Power Project Co Ltd Of Sinohydro Engineering Bureau 7
PowerChina Railway Construction Co Ltd
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Priority to CN201820309821.7U priority Critical patent/CN208472592U/en
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Abstract

Close to the steel pipe pile reinforced construction of deep basal pit bridge friction pile, for the pile foundation reinforcement construction of the bridge friction pile close to deep basal pit, the case where stratum locating for the pile foundation being especially reinforced is compound stratum, the pile of reinforcing pile can be rapidly completed while not disturbing existing pile in construction, effectively solves the problems, such as the decline of Bearing Capacity of Pile Foundation caused by due to deep foundation pit construction, sedimentation, obliquity effects bridge stabilization and use safe.Circumferentially spaced setting steel tube concrete pile in the outer soil body of existing bridge friction pile, the pre-buried seamless steel floral tube for extending to stake top in steel tube concrete pile.Newly-built steel bar concrete reinforcement cushion cap is arranged in the concrete filled steel tube stake top, the newly-built steel bar concrete reinforcement cushion cap is integrated with existing bridge friction pile pile body, each concrete filled steel tube stake top by respective connection structure consolidation, is formed new stress system and is completed stress check calculation.Newly-built steel bar concrete reinforcement cushion cap top surface is extended in the upper end of the seamless steel floral tube, forms grouting and reinforcing body to steel tube concrete pile stake subsoil body slip casing by pressure by seamless steel floral tube.

Description

Close to the steel pipe pile reinforced construction of deep basal pit bridge friction pile
Technical field
The utility model relates to science of bridge building, in particular to a kind of steel pipe pile reinforced structure close to deep basal pit bridge friction pile It makes.
Background technique
With the fast development of urban public transport, the case where subway station is built close to all kinds of buildings in city, sees repeatly Not fresh, when subway station and existing bridge hypotelorism, the excavation of structure of the subway can disturb existing bridge foundation, at this moment just need Technical treatment is carried out to bridge.
Traditional reinforcement means is using grouting and reinforcing or performs reinforced concrete pile and adds to existing bridge pile foundation Gu but reinforced in the bridge pier to locating compound stratum, strengthening construction is carried out according to the mode of grouting and reinforcing, there can be work The disadvantages of phase is long, consolidation effect is undesirable.Simultaneously because of the limitation of under-clearance height, reinforced using reinforced concrete pile When, construction reinforcement stake does not have the condition using churning driven pile, and the existing pile that need to be reinforced is friction pile, according to impact drill Pile can have the disadvantages of losing its pile foundation side friction the bad disturbance of existing pile foundation generation, is long in time limit, complex procedures.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of steel-pipe piles close to deep basal pit bridge friction pile to add Gu construction, constructs for the pile foundation reinforcement of the bridge friction pile close to deep basal pit, stratum locating for the pile foundation being especially reinforced is The case where compound stratum, the pile of reinforcing pile can be rapidly completed while not disturbing existing pile in construction, effectively solve because Deep foundation pit construction and caused by Bearing Capacity of Pile Foundation decline, sedimentation, obliquity effects bridge stabilization and use safe problem.
It is as follows that the utility model solves technical solution used by its technical problem:
The steel pipe pile reinforced construction close to deep basal pit bridge friction pile of the utility model, including existing bridge friction pile, It is characterized in that: circumferentially spaced setting steel tube concrete pile in the outer soil body of the existing bridge friction pile, in steel tube concrete pile The pre-buried seamless steel floral tube for extending to stake top;Newly-built steel bar concrete reinforcement cushion cap is arranged in the concrete filled steel tube stake top, should Newly-built steel bar concrete reinforcement cushion cap and existing bridge friction pile pile body, each concrete filled steel tube stake top are tied by respective connection Structure consolidation is integrated, and is formed new stress system and is completed stress check calculation;Extend newly-built reinforcing bar in the upper end of the seamless steel floral tube Concrete strengthening cushion cap top surface forms grouting and reinforcing to steel tube concrete pile stake subsoil body slip casing by pressure by seamless steel floral tube Body.
The utility model has the beneficial effects that for the pile foundation reinforcement construction of the bridge friction pile close to deep basal pit, especially It is the case where stratum locating for the pile foundation that is reinforced is compound stratum, optimizes construction technology and construction procedure, it can be in construction The pile of reinforcing pile is rapidly completed while not disturbing existing pile, successfully solves bridge pile foundation caused by due to deep foundation pit construction Depression of bearing force, sedimentation, the stabilization of obliquity effects bridge and the safe problem of use
Detailed description of the invention
This specification includes following four width attached drawing:
Fig. 1 is the utility model close to the plan view of the steel pipe pile reinforced construction of deep basal pit bridge friction pile;
Fig. 2 is the utility model close to the cross-section diagram of the steel pipe pile reinforced construction of deep basal pit bridge friction pile;
Fig. 3 be the utility model close to existing bridge friction pile in the steel pipe pile reinforced construction of deep basal pit bridge friction pile with The connected mode schematic diagram of newly-built cushion cap;
Fig. 4 be the utility model close to existing bridge friction pile in the steel pipe pile reinforced construction of deep basal pit bridge friction pile with The connected mode schematic diagram of newly-built cushion cap;
Component and corresponding label are shown in figure: newly-built reinforced concrete pile cap 10, existing bridge friction pile 11, steel pipe are mixed Solidifying soil stake 12, seamless steel floral tube 13, dowel 14, bar planting 15.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to Figures 1 and 2, the steel pipe pile reinforced construction close to deep basal pit bridge friction pile of the utility model includes existing Bridge friction pile 11, circumferentially spaced setting steel tube concrete pile 12 in the outer soil body of the existing bridge friction pile 11, steel pipe are mixed The pre-buried seamless steel floral tube 13 for extending to stake top in solidifying soil stake 12.Newly-built reinforced concrete is arranged in 12 stake top of steel tube concrete pile Soil reinforces cushion cap 10, the newly-built steel bar concrete reinforcement cushion cap 10 and existing 11 pile body of bridge friction pile, each steel tube concrete pile 12 stake tops are integrated by connection structure consolidation, are formed new stress system and are completed stress check calculation.The seamless steel floral tube 13 Newly-built 10 top surface of steel bar concrete reinforcement cushion cap is extended in upper end, by seamless steel floral tube 13 to 12 subsoil of steel tube concrete pile Body slip casing by pressure forms grouting and reinforcing body.
Referring to Fig. 2, steel tube concrete pile 12 uses hydraulic drill rig pore-forming pipe-following drilling, and M30 is perfused in steel pipe after pile Mortar guarantees pile strength.Newly-built steel bar concrete reinforcement cushion cap 10 is set to connect each steel tube concrete pile 12 by connection structure New stress system is formed with existing bridge friction pile 11 and completes stress check calculation, solves New-old concrete contact surface bearing capacity not The problem of foot.Pre-pouring grout processing is carried out to 12 bottoms of steel tube concrete pile by seamless steel floral tube 13 after the completion of reinforcement system, Make newly-built ruggedized construction when excavation of subway foundation pit causes the side friction of existing bridge friction pile 11 to fail soil disturbance, it is right Existing bridge pier plays a supporting role in protection.In general, the steel tube concrete pile 12 uses Q345 grades of steel seamless steel tubes, interpolation Enter two seamless steel floral tubes 13.
Referring to Fig. 3 and Fig. 4, the connection structure includes circumferential, vertical spaced plant along existing bridge friction pile 11 Muscle 15 is planted on the developed surface of existing reinforced concrete bridges friction pile 11 with newly-built 10 engaging portion of steel bar concrete reinforcement cushion cap Muscle 15 is laid by blossom type, and the inner end of each bar planting 15 anchors into existing bridge friction pile 11, over-hang part and newly-built reinforced concrete The arrangement of reinforcement that soil reinforces cushion cap 10 is fixedly connected and is embedded in its concrete.The connection structure further includes chiseling in existing bridge Card slot on 11 pile body of friction pile.
Referring to Fig. 2, the connection structure is along the circumferentially spaced dowel 14 of steel tube concrete pile 12, each dowel 14 The outer wall of steel pipe of lower end and steel tube concrete pile 12 is welded to connect, and main body is vertical in newly-built steel bar concrete reinforcement cushion cap 10 Extend and is fixedly connected with its arrangement of reinforcement.
The above only explain through diagrams the utility model close to deep basal pit bridge friction pile steel pipe pile reinforced construction Some principles, be not intended to for the utility model to be confined to shown in and the specific structure and the scope of application in, therefore it is all All corresponding modifications that may be utilized and equivalent, belong to the applied the scope of the patents of the utility model.

Claims (4)

1. close to the steel pipe pile reinforced construction of deep basal pit bridge friction pile, including existing bridge friction pile (11), it is characterized in that: institute Circumferentially spaced setting steel tube concrete pile (12) in the outer soil body of existing bridge friction pile (11) is stated, steel tube concrete pile (12) is interior The pre-buried seamless steel floral tube (13) for extending to stake top;Newly-built steel bar concrete reinforcement is arranged in steel tube concrete pile (12) stake top Cushion cap (10), newly-built steel bar concrete reinforcement cushion cap (10) and existing bridge friction pile (11) pile body, each steel tube concrete pile (12) stake top is integrated by connection structure consolidation, is formed new stress system and is completed stress check calculation;The seamless steel floral tube (13) newly-built steel bar concrete reinforcement cushion cap (10) top surface is extended in upper end, by seamless steel floral tube (13) to concrete filled steel tube Stake (12) stake subsoil body slip casing by pressure forms grouting and reinforcing body.
2. as described in claim 1 close to the steel pipe pile reinforced construction of deep basal pit bridge friction pile, it is characterized in that: the connection Structure includes spaced bar planting (15) circumferential along existing bridge friction pile (11), vertical, in existing reinforced concrete bridges Bar planting (15) is laid by blossom type on friction pile (11) and the developed surface of newly-built steel bar concrete reinforcement cushion cap (10) engaging portion, respectively The inner end of bar planting (15) anchors into existing bridge friction pile (11), over-hang part and newly-built steel bar concrete reinforcement cushion cap (10) Arrangement of reinforcement is fixedly connected and is embedded in its concrete.
3. as claimed in claim 2 close to the steel pipe pile reinforced construction of deep basal pit bridge friction pile, it is characterized in that: the connection Structure further includes chiseling in the card slot on existing bridge friction pile (11) pile body.
4. as described in claim 1 close to the steel pipe pile reinforced construction of deep basal pit bridge friction pile, it is characterized in that: the connection Structure is along steel tube concrete pile (12) circumferentially spaced dowel (14), each dowel (14) lower end and steel tube concrete pile (12) outer wall of steel pipe is welded to connect, main body it is vertically extending in newly-built steel bar concrete reinforcement cushion cap (10) and with its arrangement of reinforcement It is fixedly connected.
CN201820309821.7U 2018-03-06 2018-03-06 Close to the steel pipe pile reinforced construction of deep basal pit bridge friction pile Active CN208472592U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820309821.7U CN208472592U (en) 2018-03-06 2018-03-06 Close to the steel pipe pile reinforced construction of deep basal pit bridge friction pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820309821.7U CN208472592U (en) 2018-03-06 2018-03-06 Close to the steel pipe pile reinforced construction of deep basal pit bridge friction pile

Publications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111119262A (en) * 2019-12-30 2020-05-08 山东农业大学 Method for reinforcing existing pile foundation based on recyclable grouting pipe and application of method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111119262A (en) * 2019-12-30 2020-05-08 山东农业大学 Method for reinforcing existing pile foundation based on recyclable grouting pipe and application of method

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