CN204825923U - Relay formula underground structure - Google Patents

Relay formula underground structure Download PDF

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Publication number
CN204825923U
CN204825923U CN201520557196.4U CN201520557196U CN204825923U CN 204825923 U CN204825923 U CN 204825923U CN 201520557196 U CN201520557196 U CN 201520557196U CN 204825923 U CN204825923 U CN 204825923U
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China
Prior art keywords
soil
relay
foundation pit
supporting construction
construction
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CN201520557196.4U
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Chinese (zh)
Inventor
刘文彬
陈德军
齐振东
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Beijing Aerospace Foundation Engineering Co., Ltd.
Beijing Aerospace Geotechnical Engineering Institute Co., Ltd.
China Aerospace Construction Group Co Ltd
Original Assignee
BEIJING AEROSPACE GEOTECHNICAL ENGINEERING INSTITUTE Co Ltd
China Aerospace Construction Group Co Ltd
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Publication of CN204825923U publication Critical patent/CN204825923U/en
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Abstract

The utility model provides a compound soil nail wall supporting construction of relay formula underground structure includes upper portion and a soil nail wall supporting construction that the lower part, the soil nail wall supporting construction of lower part is squeezed into by soil nail that form in the basement rock layer and it is for the slope form, at the position that soil layer and basement rock combine, upper and lower part has the coincidence of certain length, forms excavation supporting " relay ". Technical scheme's beneficial effect lies in: use relay formula supporting construction, its construction degree of difficulty is low, and the time limit for a project is short, and construction quality controls easily, utilized the basement rock from stability, material saving, reduction expense, in addition, its construction noise is low, vibrations are little, can be used to the engineering of having relatively high expectations to the construction influence, at last, relay formula underground structure demolish, retrieve the convenience, do benefit to the environmental protection.

Description

A kind of relay-type foundation pit supporting construction
Technical field
The utility model relates to building field, particularly relates to a kind of relay-type foundation pit supporting construction.
Background technology
As the one of mini pile, steel pipe pile is widely used in pattern foundation pit supporting structure with low, the easy construction of its cost, space-efficient feature.
The steel pipe pile supporting design scheme of usual way, be specially: steel pipe pile is near foundation pit walls, then steel pipe pile is directly squeezed into below foundation ditch elevation of bottom, then under the cooperation of prestressed anchor, make steel pipe pile near foundation pit walls, afterwards at steel pipe pile arranged outside concrete face slab; Meanwhile, to Xian Fang slope, position more than steel pipe pile top, then soil nailed wall retaining structure is adopted, thus the above foundation pit walls in Support Steel pile tube top; Formed thus steel pipe pile and soil nail wall, prestressed anchor with the use of, reach the object that maintenance foundation ditch is stable.
For limited space, Deep Foundation Pit Supporting Project that buried depth of bedrock is more shallow, due to the not easily drawback such as full, easy deflection deformation of pore-forming difficulty, slip casting in basement rock, the technical approach of usual employing is: pile tube is substituted by deposited reinforced concrete pile, adopt large-scale stake machine pore-forming, concrete placed under water technique, " pile-anchor retaining " scheme that namely deep foundation ditch is conventional.
In the deep foundation pit support that above-mentioned two schemes is limited at construction space, buried depth of bedrock is more shallow, following problem can be there is respectively:
For Common Steels pile tube supporting scheme: it is comparatively dark that steel pipe pile enters basement rock, and common equipment pore-forming creeps into slowly, schedule delays; The easy slip casting of deep hole is not full, causes pile defect, and construction quality cannot ensure; After steel pipe pile length increases, easily deflection deformation occurs, supporting effect is poor.
For " pile-anchor retaining " scheme, deposited reinforced concrete pile construction adopts multiple main equipment, at substantial steel, concrete, cost, costly; Deposited reinforced concrete pile working procedure is numerous and diverse, need in many ways coordinate, long in time limit; Noise is strong, discarded object is many, vibrations are large, contaminated environment; Deposited reinforced concrete pile is not easily removed, and later stage hidden danger is many.
Therefore need a kind of structure simple, the new supporting and protection structure of easy construction.
Summary of the invention
The utility model, for the deficiencies in the prior art, proposes a kind of relay-type foundation pit supporting construction, effectively solves the technological deficiency existed in the deep foundation pit support that traditional handicraft is limited at construction space, buried depth of bedrock is more shallow.
A kind of relay-type foundation pit supporting construction described in the utility model comprises the Foundation Supported with Composite Soil Nailing on top and the soil nailed wall retaining structure of bottom;
The Foundation Supported with Composite Soil Nailing on described top comprises steel pipe pile, anchor pole and soil nailing, and described soil nailing is squeezed in foundation pit walls according to the density that design needs and formed soil nailed wall retaining structure; Described steel pipe pile top is positioned at natural terrain, and steel pipe pile bottom does not reach foundation ditch base depth and the degree of depth that only build-in is certain in basement rock; Described steel pipe pile is fixed in foundation pit walls by anchor pole;
The soil nailed wall retaining structure of described bottom is squeezed in horizon d by soil nailing and to be formed and it is for skewed;
Described top Foundation Supported with Composite Soil Nailing is combined and the certain length that overlaps with horizon d intersection area at soil layer with bottom soil nailed wall retaining structure, thus is formed " relay " of foundation pit supporting construction.
Further, the external surface of described top Foundation Supported with Composite Soil Nailing and bottom soil nailed wall retaining structure is provided with concrete surface course.
Further, described concrete surface course is also provided with horizontal steel waist rail, for ensureing the stability of supporting and protection structure further.
Further, the overlapping position of described top Foundation Supported with Composite Soil Nailing and bottom soil nailed wall retaining structure is provided with anchor pole.
Described anchor pole comprises prestressed anchor and complete bonding anchor pole.
The soil layer formation supporting that the top of Foundation Supported with Composite Soil Nailing to foundation pit walls, described top is loose, described soil nail wall forms supporting to the basement rock that foundation ditch bottom is more stable.Additionally by use anchor pole, steel pipe pile and composite soil nailing wall surface layer are close in foundation pit walls, thus keep the stability of soil mass of foundation pit.
The beneficial effect of technical scheme described in the utility model is: use relay-type foundation pit supporting construction described in the utility model, its difficulty of construction is low, and the duration is short, and construction quality easily controls; Make use of the self-stability of basement rock, save material, reduce expense; In addition, its construction noise is low, it is little to shake, and can be used for the engineering higher to construction infection requirement; Finally, suspension type steel pipe pile demolition of support structure described in the utility model, recovery conveniently, are beneficial to protection of the environment.
Accompanying drawing explanation
Fig. 1 is a kind of schematic diagram of relay-type foundation pit supporting construction;
In figure: 1 fill stratum, 2 soil layers, 3 horizon ds, 4 natural ground, 5 bottom land design elevations, 6 weeper drains, 7 soil nailings, 8 anchor poles, 9 steel waist rails, 10 concrete surface courses, 11 steel pipe piles.
Detailed description of the invention
The level of soil is generally fill stratum 1, soil layer 2 and horizon d 3 three layers, the protection of foundation ditch is exactly after foundation ditch digs, fastening sizing is carried out to the foundation pit walls that fill stratum 1, soil layer 2 and horizon d 3 three-layer soil are formed, common foundation ditch bottommost is referred to as foundation ditch bottom land design elevation 5, is provided with weeper drain 6 around foundation pit supporting construction low side.
Technical scheme described in the utility model to the concrete mode that foundation pit walls carries out fastening sizing is:
As shown in Figure 1, a kind of relay-type foundation pit supporting construction described in the utility model comprises the Foundation Supported with Composite Soil Nailing on top and the soil nailed wall retaining structure of bottom;
The Foundation Supported with Composite Soil Nailing on described top comprises steel pipe pile 11, anchor pole 8 and soil nailing 7, and described soil nailing 7 is squeezed in foundation pit walls according to the density that design needs and formed soil nailed wall retaining structure; Described steel pipe pile 11 top is positioned at natural terrain 4, and steel pipe pile 11 bottom does not reach foundation ditch base depth and the degree of depth that only build-in is certain in basement rock; Described steel pipe pile 11 is fixed in foundation pit walls by anchor pole 8; The soil nailed wall retaining structure of described bottom is squeezed in horizon d 3 by soil nailing 7 and is formed, and the soil nailed wall retaining structure of described bottom is skewed.
Described top Foundation Supported with Composite Soil Nailing is combined and the certain length that overlaps with horizon d intersection area at soil layer with bottom soil nailed wall retaining structure, thus is formed " relay " of foundation pit supporting construction.
Described composite soil nailing wall is provided with concrete surface course 10, uses anchor pole steel pipe pile 11 and concrete surface course 10 to be close in foundation pit walls, thus keep the stability of foundation ditch top fill stratum 1 and soil layer 2.
In steel pipe pile 11 length range, be provided with prestressed anchor or complete bonding anchor pole in addition, then use prestressed anchor or complete bonding anchor pole to enter in foundation pit walls through behind steel waist rail 9, composite soil nailing wall surface layer and steel pipe pile 11 gap successively.
Be outside equipped with horizontal steel waist rail 9 at described composite soil nailing wall surface layer, then use anchor pole to enter in foundation pit walls through behind horizontal steel waist rail, composite soil nailing wall surface layer and steel pipe pile gap successively.
The loose soil layer in the steel pipe pile of technical scheme described in the utility model, the top of prestressed anchor composite soil nailing wall to foundation pit walls forms supporting, soil nail wall forms supporting to the basement rock that foundation ditch bottom is more stable, at the position that soil layer is combined with basement rock, there is the coincidence of certain length the upper and lower part of supporting and protection structure, is formed " relay " of pattern foundation pit supporting structure.
The beneficial effect of technical scheme described in the utility model is: use relay-type foundation pit supporting construction described in the utility model, its difficulty of construction is low, and the duration is short, and construction quality easily controls; Make use of the self-stability of basement rock, save material, reduce expense; In addition, its construction noise is low, it is little to shake, and can be used for the engineering higher to construction infection requirement; Finally, relay-type foundation pit supporting construction described in the utility model is removed, it is convenient to reclaim, and is beneficial to protection of the environment.

Claims (5)

1. a relay-type foundation pit supporting construction, is characterized in that: described relay-type foundation pit supporting construction comprises the Foundation Supported with Composite Soil Nailing on top and the soil nailed wall retaining structure of bottom;
The Foundation Supported with Composite Soil Nailing on described top comprises steel pipe pile, anchor pole and soil nailing, and described soil nailing is squeezed in foundation pit walls according to the density that design needs and formed soil nailed wall retaining structure; Described steel pipe pile top is positioned at natural terrain, and steel pipe pile bottom does not reach foundation ditch base depth and the degree of depth that only build-in is certain in basement rock; Described steel pipe pile is fixed in foundation pit walls by anchor pole;
The soil nailed wall retaining structure of described bottom is squeezed in horizon d by soil nailing and to be formed and it is for skewed;
Described top Foundation Supported with Composite Soil Nailing is combined and the certain length that overlaps with horizon d intersection area at soil layer with bottom soil nailed wall retaining structure, thus is formed " relay " of foundation pit supporting construction.
2. a kind of relay-type foundation pit supporting construction as claimed in claim 1, is characterized in that: the external surface of described top Foundation Supported with Composite Soil Nailing and bottom soil nailed wall retaining structure is provided with concrete surface course.
3. a kind of relay-type foundation pit supporting construction as claimed in claim 2, is characterized in that: described concrete surface course is also provided with horizontal steel waist rail, for ensureing the stability of supporting and protection structure further.
4. a kind of relay-type foundation pit supporting construction as claimed in claim 1, is characterized in that: the overlapping position of described top Foundation Supported with Composite Soil Nailing and bottom soil nailed wall retaining structure is provided with anchor pole.
5. a kind of relay-type foundation pit supporting construction as described in claim 1 or 4, is characterized in that: described anchor pole comprises prestressed anchor and complete bonding anchor pole.
CN201520557196.4U 2015-07-29 2015-07-29 Relay formula underground structure Active CN204825923U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107059882A (en) * 2017-04-17 2017-08-18 燕山大学 Arch anchor net and Anchor-Pile Retaining Structure structure
CN108149696A (en) * 2018-02-12 2018-06-12 山东大学 The composite supporting construction and construction method that a kind of gib soil nail wall is combined with permanent anti-float anchor rod
CN108343068A (en) * 2017-01-22 2018-07-31 北京爱地地质勘察基础工程公司 Composite soil nailing wall and pile-anchor retaining composite supporting construction and construction method
CN111535335A (en) * 2020-05-27 2020-08-14 平煤神马建工集团有限公司 Railway near-edge deep foundation pit supporting method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108343068A (en) * 2017-01-22 2018-07-31 北京爱地地质勘察基础工程公司 Composite soil nailing wall and pile-anchor retaining composite supporting construction and construction method
CN108343068B (en) * 2017-01-22 2023-08-29 北京爱地地质工程技术有限公司 Composite soil nailing wall and pile anchor supporting composite supporting structure and construction method
CN107059882A (en) * 2017-04-17 2017-08-18 燕山大学 Arch anchor net and Anchor-Pile Retaining Structure structure
CN108149696A (en) * 2018-02-12 2018-06-12 山东大学 The composite supporting construction and construction method that a kind of gib soil nail wall is combined with permanent anti-float anchor rod
CN108149696B (en) * 2018-02-12 2019-09-13 山东大学 A kind of construction method for the composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod
CN111535335A (en) * 2020-05-27 2020-08-14 平煤神马建工集团有限公司 Railway near-edge deep foundation pit supporting method

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C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20161227

Address after: 100070 Beijing West Fourth Ring Road, Fengtai District, No. 83

Patentee after: China Aerospace Construction Group Co., Ltd.

Patentee after: Beijing Aerospace Geotechnical Engineering Institute Co., Ltd.

Patentee after: Beijing Aerospace Foundation Engineering Co., Ltd.

Address before: 100070 Beijing West Fourth Ring Road, Fengtai District, No. 83

Patentee before: China Aerospace Construction Group Co., Ltd.

Patentee before: Beijing Aerospace Geotechnical Engineering Institute Co., Ltd.