CN103806450A - Double-row pile foundation pit reinforcement structure - Google Patents

Double-row pile foundation pit reinforcement structure Download PDF

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Publication number
CN103806450A
CN103806450A CN201410089831.0A CN201410089831A CN103806450A CN 103806450 A CN103806450 A CN 103806450A CN 201410089831 A CN201410089831 A CN 201410089831A CN 103806450 A CN103806450 A CN 103806450A
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CN
China
Prior art keywords
supporting
double
foundation ditch
anchorage
row pile
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410089831.0A
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Chinese (zh)
Inventor
康景文
王新
易春艳
王宁
钟静
王君红
晏宾
付彬桢
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China Southwest Architectural Design and Research Institute Co Ltd
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China Southwest Architectural Design and Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by China Southwest Architectural Design and Research Institute Co Ltd filed Critical China Southwest Architectural Design and Research Institute Co Ltd
Priority to CN201410089831.0A priority Critical patent/CN103806450A/en
Publication of CN103806450A publication Critical patent/CN103806450A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a double-row pile foundation pit reinforcement structure. The double-row pile foundation pit reinforcement structure comprises a supporting structure consisting of supporting piles positioned at the side walls of foundation pits and crown beams positioned at the top ends of the supporting piles, and also comprises anchorage piles which are arranged parallel to the supporting piles; the anchorage piles and the supporting piles are arranged at predetermined distance and are anchored into a soil body outside the foundation pits; the anchorage piles are fixedly connected with the supporting piles through pull rods. According to the double-row pile foundation pit reinforcement structure, the anchorage piles and the pull rods are added on the basis of the original supporting structures to form an anchorage-type double-row pile supporting structure. The structure is reinforced by fully utilizing the original supporting structure; the pivot span of the existing supporting structure is reduced; the anti-bending capacity is improved; the integrity and the overall rigidity of the overall supporting system are enhanced; the pressure distribution of the original supporting structure is adjusted; the bearing capacity of the original supporting structure is improved; meanwhile, the double-row pile foundation pit reinforcement structure provided by the invention has the characteristics of quick and high-efficiency reinforcement, and low cost, can realize segmented construction, is convenient and quick, has a remarkable reinforcement effect, and is convenient to popularize and use.

Description

A kind of double-row pile foundation ditch strengthening structure
Technical field
The present invention relates to civil engineering technical field, particularly a kind of double-row pile foundation ditch strengthening structure.
Background technology
Foundation ditch, refers to the below ground space of excavating for carrying out building (comprising structure) basis and the construction of basement.Foundation ditch belongs to temporary work, and its effect is to provide a space, makes basic build operation be able to carry out according to the specified position of design.
Pattern foundation pit supporting structure, refers to the safety into guaranteeing Underground Construction and foundation ditch surrounding enviroment, to a gear, reinforcing, maintenance and the safeguard measure of foundation pit side-wall and surrounding enviroment employing.In prior art, campshed supporting is common support form.But in practice of construction process, foundation pit supporting construction is often destroyed the excessive or conditional mutation such as surrounding enviroment, underground water in the situation that at bearing pressure, there is sediment failure or excessive deformation, foundation ditch surrounding enviroment and underground structure are caused to adverse effect in various degree.
Therefore, how improving the supporting capacity of existing foundation pit supporting construction, is those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, the invention provides a kind of double-row pile foundation ditch strengthening structure, make full use of original supporting and protection structure and reinforce, strengthened globality and the rigidity of support system, the load pressure of having adjusted former supporting and protection structure distributes, improve its supporting capacity, meanwhile, reinforce cheap, and can section construction, convenient and swift, consolidation effect is remarkable.
For achieving the above object, the invention provides following technical scheme:
A kind of double-row pile foundation ditch strengthening structure, comprise by being positioned at the soldier pile at foundation pit side-wall place and being positioned at the supporting and protection structure that the Guan Liang on top of described soldier pile forms, also comprise the anchorage stake being arranged in parallel with described soldier pile, described anchorage stake and described soldier pile keep predeterminable range and are anchored in the soil body of all sides of described foundation ditch, and described anchorage stake and described soldier pile are connected by pull bar.
Preferably, in above-mentioned double-row pile foundation ditch strengthening structure, by the mode of bar planting or by wearing steel in prebored hole and applying prestressed mode, form described pull bar in the cast of the top of described supporting and protection structure.
Preferably, in above-mentioned double-row pile foundation ditch strengthening structure, the top of one end of described pull bar and described anchorage stake is connected, and the other end and described Guan Liang are connected.
Preferably, in above-mentioned double-row pile foundation ditch strengthening structure, the top of described anchorage stake flushes with the top of described former supporting and protection structure.
Preferably, in above-mentioned double-row pile foundation ditch strengthening structure, long 1/3rd to 1/2nd of the described soldier pile length that equals of stake of described anchorage stake.
Preferably, in above-mentioned double-row pile foundation ditch strengthening structure, described anchorage stake is corresponding one by one with described soldier pile.
Preferably, in above-mentioned double-row pile foundation ditch strengthening structure, described pull bar is vertical with described Guan Liang.
Preferably, in above-mentioned double-row pile foundation ditch strengthening structure, the top of described supporting and protection structure flushes with the end face of described foundation ditch.
Preferably, in above-mentioned double-row pile foundation ditch strengthening structure, described predeterminable range is not less than two times of diameter of described soldier pile.
Preferably, in above-mentioned double-row pile foundation ditch strengthening structure, described anchorage stake and described soldier pile equal diameters.
Can find out from above-mentioned technical scheme, double-row pile foundation ditch strengthening structure provided by the invention has increased anchorage stake and pull bar newly on the basis of original supporting and protection structure, forms anchorage type Retaining Structure with Double-row Piles.This structure makes full use of original supporting and protection structure and reinforces, both reduce the fulcrum span on existing pile body, improved bending resistance, strengthened again the wholeness and whole stiffness of whole support system, the load pressure of having adjusted former supporting and protection structure distributes, and improves its supporting capacity; Meanwhile, the double-row pile foundation ditch strengthening structure that the embodiment of the present invention provides have reinforcing rapidly and efficiently with the feature such as cheap, and can section construction, convenient and swift, consolidation effect is remarkable, is convenient to promote the use of.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Syndeton schematic diagram between soldier pile and anchorage stake that Fig. 1 provides for the embodiment of the present invention;
The top view of the double-row pile foundation ditch strengthening structure that Fig. 2 provides for the embodiment of the present invention.
Wherein, 1 soldier pile, 2 anchorage stakes, 3 pull bars, 4 Guan Liang.
The specific embodiment
The invention discloses a kind of double-row pile foundation ditch strengthening structure, making full use of original supporting and protection structure reinforces, globality and the rigidity of support system are strengthened, the load pressure of having adjusted supporting and protection structure distributes, and improves its supporting capacity, simultaneously, reinforce cheap, and can section construction, convenient and swift, consolidation effect is remarkable.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-Fig. 2, the syndeton schematic diagram between soldier pile and anchorage stake that Fig. 1 provides for the embodiment of the present invention, the top view of the double-row pile foundation ditch strengthening structure that Fig. 2 provides for the embodiment of the present invention.
The double-row pile foundation ditch strengthening structure that the embodiment of the present invention provides, comprises soldier pile 1, hat beam 4 and anchorage stake 2.Wherein, soldier pile 1 is positioned at foundation pit side-wall place, and hat beam 4 is positioned at the top of soldier pile 1, and soldier pile 1 and hat beam 4 form supporting and protection structure; Anchorage stake 2 is anchored in the soil body of foundation ditch week side, is arranged in parallel and keeps predeterminable range with soldier pile 1 with soldier pile 1, and anchorage stake 2 is connected by pull bar 3 with soldier pile 1.
Can find out from above-mentioned technical scheme, the double-row pile foundation ditch strengthening structure that the embodiment of the present invention provides has increased anchorage stake 2 and pull bar 3 newly on the basis of original supporting and protection structure, forms anchorage type Retaining Structure with Double-row Piles.This structure makes full use of original supporting and protection structure and reinforces, both the fulcrum span that had reduced existing space enclosing structure, has improved bending resistance, has strengthened again the wholeness and whole stiffness of whole support system, the load pressure of having adjusted former supporting and protection structure distributes, and improves its supporting capacity.Simultaneously, the double-row pile foundation ditch strengthening structure that the embodiment of the present invention provides have reinforcing rapidly and efficiently with the feature such as cheap, and can section construction (claim again segmentation parallel construction, be divided into several work planes by whole operation, each work plane is constructed simultaneously), convenient and swift, consolidation effect is remarkable, is convenient to promote the use of.
In specific embodiment, as shown in Figure 1, T plane represents the end face of foundation ditch, and B plane represents the bottom surface of foundation ditch, and the top of supporting and protection structure flushes with the end face of foundation ditch, and anchorage stake 2 is contour with supporting and protection structure.Wherein, the top of one end of pull bar 3 and anchorage stake 2 is connected, and the other end is connected with hat beam 4, pull bar 3 and hat beam 4 vertical (as shown in Figure 2).
Further, in the double-row pile foundation ditch strengthening structure that the embodiment of the present invention provides, anchorage stake 2 is corresponding one by one with soldier pile 1; Anchorage stake 2 and soldier pile 1 equal diameters, long 1/3rd to 1/2nd of the soldier pile length that equals of stake of anchorage stake 2; The predeterminable range keeping between anchorage stake 2 and soldier pile 1 is not less than two times of diameter of soldier pile 1, and for example this predeterminable range equals two times to six times of soldier pile 1.
In addition, the double-row pile foundation ditch strengthening structure that the embodiment of the present invention provides, by wearing steel in prebored hole and applying prestressed mode, forms pull bar 3 in the cast of the top of supporting and protection structure.Wherein, pore-forming is again in boring, is a kind of link technique in building structure strengthening engineering, specifically refers to: on base material, hole, then settle steel, then apply prestressing force, after adhesive curing, steel and substrate bonding are integrated.In other specific embodiment, can also form pull bar 3 by the mode of bar planting or in the cast of the top of supporting and protection structure.Wherein, effective reinforcement is again in bar planting, on base material, holes, and then injects high-strength anchoring adhesive, then inserts reinforcing bar or section bar, after adhesive curing, reinforcing bar and substrate bonding is integrated.
To sum up, the work progress of the double-row pile foundation ditch strengthening structure that the embodiment of the present invention provides is: be that d) 2d~6d place arranges anchorage stake 2 establish its diameter apart from soldier pile 1(, according to actual conditions, the stake of rear row's anchorage stake 2 is long is 1/2~1/3 of supporting and protection structure total length; Then, by wearing steel and apply prestressed mode in the top bar planting of hat beam 4 or in by prebored hole, cast forms pull bar 3, with the common anchorage type double-row pile foundation ditch strengthening structure that forms of rear row's anchorage stake 2.
But; those skilled in the art hold is intelligiblely; above described specific embodiment is only a preferred version provided by the invention; in other specific embodiment; arrangement form between anchorage stake 2 and former supporting and protection structure can also be set according to actual needs; for example; length, height or the diameter of anchorage stake 2; and corresponding relation between anchorage stake 2 and soldier pile 1 (" corresponding one by one " or " interval correspondence "); all can carry out according to specific needs compliance change, but within all belonging to protection scope of the present invention.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple modification of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (10)

1. a double-row pile foundation ditch strengthening structure, comprise by the soldier pile that is positioned at foundation pit side-wall place (1) and be positioned at described soldier pile (1) top Guan Liang (4) form supporting and protection structure, it is characterized in that, also comprise the anchorage stake (2) being arranged in parallel with described soldier pile (1), described anchorage stake (2) keeps predeterminable range with described soldier pile (1) and is anchored in the soil body of all sides of described foundation ditch, and described anchorage stake (2) is connected by pull bar (3) with described soldier pile (1).
2. double-row pile foundation ditch strengthening structure according to claim 1, is characterized in that, by the mode of bar planting or by wearing steel in prebored hole and applying prestressed mode, connect on the top of described supporting and protection structure and pour into a mould form described pull bar (3).
3. double-row pile foundation ditch strengthening structure according to claim 2, is characterized in that, the top of one end of described pull bar (3) and described anchorage stake (2) is connected, and the other end and described Guan Liang (4) are connected.
4. double-row pile foundation ditch strengthening structure according to claim 3, is characterized in that, the top of described anchorage stake (2) flushes with the top of described supporting and protection structure.
5. double-row pile foundation ditch strengthening structure according to claim 4, is characterized in that, long 1/3rd to 1/2nd of described soldier pile (1) length that equals of stake of described anchorage stake (2).
6. double-row pile foundation ditch strengthening structure according to claim 3, is characterized in that, described anchorage stake (2) is corresponding one by one with described soldier pile (1).
7. double-row pile foundation ditch strengthening structure according to claim 3, is characterized in that, described pull bar (3) is vertical with described Guan Liang (4).
8. double-row pile foundation ditch strengthening structure according to claim 1, is characterized in that, the top of described supporting and protection structure flushes with the end face of described foundation ditch.
9. double-row pile foundation ditch strengthening structure according to claim 1, is characterized in that, described predeterminable range is not less than two times of diameter of described soldier pile (1).
10. double-row pile foundation ditch strengthening structure according to claim 1, is characterized in that, described anchorage stake (2) and described soldier pile (1) equal diameters.
CN201410089831.0A 2014-03-12 2014-03-12 Double-row pile foundation pit reinforcement structure Pending CN103806450A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104790408A (en) * 2015-04-15 2015-07-22 叶长青 Irregular foundation pit construction method
CN105401584A (en) * 2015-09-22 2016-03-16 中煤科工集团重庆设计研究院有限公司 Side slope deformation reinforcement structure of anchor-pulling pile support and construction method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0941366A (en) * 1995-07-27 1997-02-10 Kubota Corp Method of anchor driving construction in steel-pipe column row retaining wall
CN201202120Y (en) * 2008-05-28 2009-03-04 浙江舜江建设集团有限公司 Mixing pile foundation pit supporting construction
CN201598642U (en) * 2010-03-03 2010-10-06 东南大学 Double-row pile foundation pit support structure
CN203022007U (en) * 2012-12-31 2013-06-26 中国建筑西南勘察设计研究院有限公司 Front-dense and rear-sparse double-row pile foundation pit supporting and protecting structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0941366A (en) * 1995-07-27 1997-02-10 Kubota Corp Method of anchor driving construction in steel-pipe column row retaining wall
CN201202120Y (en) * 2008-05-28 2009-03-04 浙江舜江建设集团有限公司 Mixing pile foundation pit supporting construction
CN201598642U (en) * 2010-03-03 2010-10-06 东南大学 Double-row pile foundation pit support structure
CN203022007U (en) * 2012-12-31 2013-06-26 中国建筑西南勘察设计研究院有限公司 Front-dense and rear-sparse double-row pile foundation pit supporting and protecting structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104790408A (en) * 2015-04-15 2015-07-22 叶长青 Irregular foundation pit construction method
CN104790408B (en) * 2015-04-15 2016-08-24 叶长青 Irregular foundation pit construction method
CN105401584A (en) * 2015-09-22 2016-03-16 中煤科工集团重庆设计研究院有限公司 Side slope deformation reinforcement structure of anchor-pulling pile support and construction method thereof
CN105401584B (en) * 2015-09-22 2017-11-21 中煤科工集团重庆设计研究院有限公司 The slope deforming ruggedized construction and its construction method of anchorage pile supporting

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Application publication date: 20140521