CN108442385A - A kind of supporting construction of foundation pit composite pile wall - Google Patents

A kind of supporting construction of foundation pit composite pile wall Download PDF

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Publication number
CN108442385A
CN108442385A CN201810448392.6A CN201810448392A CN108442385A CN 108442385 A CN108442385 A CN 108442385A CN 201810448392 A CN201810448392 A CN 201810448392A CN 108442385 A CN108442385 A CN 108442385A
Authority
CN
China
Prior art keywords
pile
foundation pit
supporting construction
piling
reinforced concrete
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
CN201810448392.6A
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Chinese (zh)
Inventor
彭成
田宗坤
谭毓清
邓佩宇
郭庆梅
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University of South China
Original Assignee
University of South China
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.)
Filing date
Publication date
Application filed by University of South China filed Critical University of South China
Priority to CN201810448392.6A priority Critical patent/CN108442385A/en
Publication of CN108442385A publication Critical patent/CN108442385A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0004Synthetics
    • E02D2300/0018Cement used as binder
    • E02D2300/002Concrete

Abstract

The invention discloses a kind of supporting construction of foundation pit composite pile wall, including:Armored concrete piling wall, reinforced concrete cover plate, mini pile;The bottom of the armored concrete piling wall is set in ground, and the reinforced concrete pile coping is connect with the reinforced concrete cover plate;Mini pile described in several rows is provided with after the armored concrete piling wall, the bottom of the mini pile is set in ground, and top is connect with the reinforced concrete cover plate.The supporting construction of foundation pit composite pile wall provided by the invention; it is a kind of NEW TYPE OF COMPOSITE supporting structure system; with water sealing and seepage resistane and support retaining double effects; it is not only with good economic efficiency, and have good benefit in save Underground Space Resource, reduce land movement, protection surrounding enviroment, shorten the construction period etc..

Description

A kind of supporting construction of foundation pit composite pile wall
Technical field
The present invention relates to a kind of supporting construction of foundation pit, specifically, especially a kind of supporting knot of foundation pit composite pile wall Structure.
Background technology
The China Jin20Nian Shi Development of Urban Foundation Work period the swiftest and the most violent, for urban area land used anxiety and land price Expensive situation, developer always try to improve the space utilization benefit in soil.It is limited by plot ratio due to stretching upwards, Thus increasing the utilization to the underground space then becomes effective selection.Deep pit digging has obtained unprecedented with support technology Development and propulsion.
Deep foundation pit supporting structure common at present mainly has following several types:Steel sheet pile supporting, deep-layer stirring supporting, row Stake supporting, diaphram wall, plate brad supporting, in addition also anchor pole or combined bolting and shotcrete, the supporting of arch ring supporting contrary sequence method, cantilever pile branch Shield mode, portal jib support pattern, inner support support engineering and campshed+prestress anchorage cable etc..
Though multiple material handling method of deep foundation pit has achieved many successfully warps under national different regions, different geological conditions Test, but it is existing there are still some problems further to study or improve, to adapt to the needs of modernization economic construction.Deep-foundation pit engineering The problem of being usually present during supporting construction is mainly the following:1) soil layer excavates and slope retaining mismate;2) side Slope, which is repaired, is not achieved design, code requirement mismate;3) soil nailing or rockbolt stress do not meet design requirement;4) jetting cement thickness Not enough, design requirement is not achieved in intensity;5) work progress and the difference of design are big;6) it designs larger with engineering actual variance.
Invention content
In order to solve problems in the prior art, an embodiment of the present invention provides a kind of supporting construction of foundation pit composite pile wall. The technical solution is as follows:
On the one hand, a kind of supporting construction of foundation pit composite pile wall is provided, including:Armored concrete piling wall, reinforced concrete Earth mulch plate, mini pile;
The bottom of the armored concrete piling wall is set in ground, the reinforced concrete pile coping and the steel Reinforced concrete cover board connects;Mini pile described in several rows, the bottom of the mini pile are provided with after the armored concrete piling wall It is set in ground, top is connect with the reinforced concrete cover plate.
Further, the armored concrete piling wall is by being arranged single tube, three pipe rotary churning piles formation water-stop curtain.
Further, the supporting construction of the foundation pit composite pile wall further includes oblique anchor;The mini pile is by tiltedly anchoring into row Anchoring.
Further, the connection that the bottom of the armored concrete piling wall passes through grouting and reinforcing and ground.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is:
The supporting construction of foundation pit composite pile wall provided by the invention is a kind of NEW TYPE OF COMPOSITE supporting structure system, is had only Water is impervious and support retaining double effects, not only with good economic efficiency, and is saving Underground Space Resource, reducing soil Position moves, surrounding enviroment, shortening construction period etc. is protected to have good benefit.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings Attached drawing.
Fig. 1 is the supporting construction schematic diagram of the foundation pit composite pile wall of the embodiment of the present invention;
Fig. 2 is the stress diagram of the supporting construction of the foundation pit composite pile wall of the embodiment of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention Formula is described in further detail.
The present invention provides a kind of supporting construction of foundation pit composite pile wall, referring to Fig. 1, including:Armored concrete piling wall 1, Reinforced concrete cover plate 2, mini pile 3;
The bottom of the armored concrete piling wall 1 is set in ground 5, the top of the armored concrete piling wall 1 and institute State the connection of reinforced concrete cover plate 2;Mini pile 3 described in several rows, the mini pile are provided with after the armored concrete piling wall 1 3 bottom is set in ground 5, and top is connect with the reinforced concrete cover plate 2.
Further, the armored concrete piling wall 1 is by being arranged single tube, three pipe rotary churning piles formation water-stop curtain.
Further, the connection that the bottom of the armored concrete piling wall passes through grouting and reinforcing and ground.
Further, in other embodiments, the supporting construction of foundation pit composite pile wall further includes oblique anchor;The mini pile is logical It crosses and tiltedly anchors into capable anchoring.
In the present embodiment, the stress diagram of the supporting construction of foundation pit composite pile wall is additionally provided, referring to Fig. 2, arrow in figure Direction of the head between soil and supporting construction, dotted line are excavation slope soil body slip-crack surface.
Specifically, show to act on the soil in supporting construction according to the two of traditional earth pressure of supporting structure kinds of computational theories Pressure generate condition be soil and water gravity, pore water pressure, seepage force influence, therefore mitigate soil and water active force or It is the fundamental way for reducing earth pressure of supporting structure to change load path.A kind of soil, water active force can be effectively reduced if finding Method can fundamentally reduce soil pressure, to effectively reduce weighing factor of the other factors to soil pressure distribution.After considering wall The sphenoid ride model of side resistance is close to Coulomb theory.The supporting construction of foundation pit composite pile wall in the present embodiment is based on State what two kinds of factors considered to be formed.The supporting construction of foundation pit composite pile wall is perpendicular by n rows after cement-soil pile water-stop curtain and wall The basic supporting structure or combined level anchor, oblique anchor formed to paxilla, concrete coping, has sealing and the dual skill of supporting The retaining wall technology of art effect.Major technique meaning is summarised as:1. " cement-soil pile+grouting and reinforcing soil+n arranges paxilla+bears down on one Concrete slab ".Structure type between diaphram wall and cement-soil gravity type retaining wall, horizontal soil nail wall, vertical reinforced cob wall it Between, belong to half just semi-flexible supporting;2. being different from gantry type reinforced cement-soil pile anchor support;3. compared with composite soil nailing wall, save Underground Space Resource reduces land movement;4. compared with SMW engineering methods, foundation pit displacement is smaller when no horizontal anchor supports;5. with reinforcement water Soil pile-anchor retaining is compared, and solves the problems, such as the Spatial Coupling of piling wall component.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is:
The supporting construction of foundation pit composite pile wall provided by the invention is a kind of NEW TYPE OF COMPOSITE supporting structure system, is had only Water is impervious and support retaining double effects, not only with good economic efficiency, and is saving Underground Space Resource, reducing soil Position moves, surrounding enviroment, shortening construction period etc. is protected to have good benefit.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, all in the spirit and principles in the present invention Within, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.

Claims (4)

1. a kind of supporting construction of foundation pit composite pile wall, which is characterized in that including:Armored concrete piling wall, reinforced concrete earth mulch Plate, mini pile;
The bottom of the armored concrete piling wall is set in ground, and the reinforced concrete pile coping is mixed with the reinforcing bar Solidifying earth mulch plate connection;Mini pile described in several rows, the bottom setting of the mini pile are provided with after the armored concrete piling wall In in ground, top is connect with the reinforced concrete cover plate.
2. the supporting construction of foundation pit composite pile wall as described in claim 1, which is characterized in that the armored concrete piling wall is logical Cross setting single tube, three pipe rotary churning piles form water-stop curtain.
3. the supporting construction of foundation pit composite pile wall as described in claim 1, which is characterized in that the branch of the foundation pit composite pile wall Protection structure further includes oblique anchor;The mini pile is by tiltedly anchoring into capable anchoring.
4. the supporting construction of foundation pit composite pile wall as described in claim 1, which is characterized in that the armored concrete piling wall The connection that bottom passes through grouting and reinforcing and ground.
CN201810448392.6A 2018-05-11 2018-05-11 A kind of supporting construction of foundation pit composite pile wall Pending CN108442385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810448392.6A CN108442385A (en) 2018-05-11 2018-05-11 A kind of supporting construction of foundation pit composite pile wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810448392.6A CN108442385A (en) 2018-05-11 2018-05-11 A kind of supporting construction of foundation pit composite pile wall

Publications (1)

Publication Number Publication Date
CN108442385A true CN108442385A (en) 2018-08-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810448392.6A Pending CN108442385A (en) 2018-05-11 2018-05-11 A kind of supporting construction of foundation pit composite pile wall

Country Status (1)

Country Link
CN (1) CN108442385A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112095617A (en) * 2020-08-21 2020-12-18 中国建筑第八工程局有限公司 Deep pit supporting structure in foundation pit and construction method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112095617A (en) * 2020-08-21 2020-12-18 中国建筑第八工程局有限公司 Deep pit supporting structure in foundation pit and construction method thereof

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