CN104404967B - Rigid frame posture internal support of foundation pit structure and construction method - Google Patents
Rigid frame posture internal support of foundation pit structure and construction method Download PDFInfo
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- CN104404967B CN104404967B CN201410696503.7A CN201410696503A CN104404967B CN 104404967 B CN104404967 B CN 104404967B CN 201410696503 A CN201410696503 A CN 201410696503A CN 104404967 B CN104404967 B CN 104404967B
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- rigid frame
- short beam
- column
- campshed
- foundation pit
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a kind of rigid frame posture internal support of foundation pit structure and construction method, this structure includes the gear soil sealing campshed being arranged at foundation ditch periphery, the side bar being connected with gear soil sealing campshed, the rigid frame structure being arranged in foundation ditch, the interim campshed being connected with described rigid frame structure inside edge, described rigid frame structure is by the long beam intersected and short beam, it is arranged on the column at described long beam and short beam crossed node to constitute, next layer of node and its that long beam and short beam intersect in same short beam perpendicular to corner node between be connected and have brace, the short beam of next-door neighbour's margin of foundation pit is also connected with side bar；Column uses latticed steel structure or steel pipe, the lower prop being arranged on below hole end absolute altitude be formed by connecting with the upper prop being arranged on more than hole end absolute altitude.The present invention can reduce the quantity of inner support, reduce the quantity of column, gives the space providing big of cutting the earth, thus reduces construction costs, investment reduction.
Description
Technical field
The invention belongs to civil construction project field, relate to a kind of foundation pit supporting project, particularly to a kind of rigid frame
Formula internal support of foundation pit structure and construction method.
Background technology
At present in foundation pit supporting construction, commonly used inner supporting structure, traditional inner supporting structure mostly be support or
Angle brace, the support of this form needs substantial amounts of column, and investment cost is relatively big, and the construction period is longer, and returns and dig
Soil zone carrys out inconvenience greatly so that shoveling expense increases, and the duration of cutting the earth increases, and therefore reducing inner support is to reduce foundation ditch
Supporting cost, the effective means of reduction of erection time.
Summary of the invention
Technical problem: the purpose of the present invention aim to provide a kind of can reduce inner support quantity, the quantity that reduces column,
Give the space providing big of cutting the earth, thus reduce construction costs, the rigid frame posture internal support of foundation pit structure of investment reduction,
The construction method of this supporting construction a kind of is provided simultaneously.
Technical scheme: the rigid frame posture internal support of foundation pit structure of the present invention is arranged along foundation ditch surrounding, including being arranged at base
Hole periphery gear soil sealing campshed with gear soil sealing campshed be connected side bar, be arranged in foundation ditch rigid frame knot
The interim campshed that structure is connected with described rigid frame structure inside edge, described rigid frame structure is by the long beam intersected
With short beam, be arranged on column at described long beam and short beam crossed node and constitute, node that long beam and short beam intersect and its
Next layer in same short beam perpendicular to corner node between connect and have a brace, the short beam of next-door neighbour's margin of foundation pit
Also it is connected with side bar；Column uses latticed steel structure or steel pipe, by the lower prop and the setting that are arranged on below hole end absolute altitude
Upper prop more than the end absolute altitude of hole is formed by connecting.
In the preferred version of rigid frame posture internal support of foundation pit structure of the present invention, described rigid frame structure arranges multilamellar
Long beam and short beam, the node of every layer long beam and short beam is all connected with column.
In the preferred version of rigid frame posture internal support of foundation pit structure of the present invention, rigid frame structure arranges the long beam of monolayer
And short beam, the lower end of described brace is connected with the column at foundation ditch bottom surface and side bar.
In the preferred version of rigid frame posture internal support of foundation pit structure of the present invention, the long beam in rigid frame structure, short beam
With position, absolute altitude, sectional dimension and the mechanical characteristic of column according to the design requirement of basement and parameter determination.
In the preferred version of rigid frame posture internal support of foundation pit structure of the present invention, base plate is provided below to be positioned at the bottom of foundation ditch and marks
High following paxilla, base plate is connected with column, brace and gear soil sealing campshed and together pours, and described paxilla inserts soil
In Ceng and be mounted in base plate.
In the present invention, long beam is arranged parallels with side bar, and short beam arranges perpendicular with side bar, in the phase of short beam with side bar
Pour both at friendship and be integrally forming.
When each layer absolute altitude layer each with basement absolute altitude of the rigid frame posture internal support of foundation pit structure of the present invention is consistent and vertical
Post and basement post are away from identical, and sectional dimension and the characteristic of long beam, short beam and column in structure are each with basement structure
When the design parameter of respective members is consistent, rigid frame posture internal support of foundation pit structure just can double as basement structure, from
And eliminate column, eliminate short beam and Chang Liang, this basement structure and rigid frame posture internal support of foundation pit structure
Unite two into one, greatly saved investment, shortened the duration.
Topmost one layer of side bar is generally arranged at the top keeping off soil sealing campshed, and fixing connection；Remaining side bar is arranged on
The waist of gear soil sealing campshed, long beam, short beam and brace all intersect and fix connection with column, long beam, short beam, oblique
The bar number of plies vertically can be monolayer, multilamellar, is specifically determined by calculating.
The present invention does not limit the columns of column, include in other words one across and the situation of multispan rigid frame, tool
The Pin number of body framework is determined by calculating.
The lower prop of column is arranged on below hole end absolute altitude, and upper prop is arranged on more than hole end absolute altitude, and upper prop uses lattice steel
Structure or steel pipe.
In order to improve the rigidity of rigid frame posture inner supporting structure further, reduce the deformation of supporting construction, earth excavation
After on earth, some paxillas can be squeezed into according in design soil below basement, and these paxillas are poured and are mounted in
In basement bottom board, together with i.e. basement bottom board is cast in column, brace, gear soil sealing campshed and paxilla, shape
Having become an entirety, the quantity of paxilla, length, arrangement and position are determined by designing calculating, are not limited by schematic diagram.
The construction method of the rigid frame posture internal support of foundation pit structure of the present invention, it comprises the concrete steps that:
1) gear soil sealing campshed, column and interim campshed are constructed in construction；
2) earth excavation is high to the stake top mark of column, interim campshed and gear soil sealing campshed；
3) the long beam in one layer, the top of pouring construction, short beam and side bar；
4) cut the earth downwards between gear soil sealing campshed at interim campshed, until the end absolute altitude of the long beam of the second layer.
5) the construction long beam of the second layer, short beam, brace between side bar, and ground floor short beam and second layer short beam；
6) by above-mentioned steps 2) 5) continue construction, until earth excavation is to absolute altitude at the bottom of foundation ditch, construct all
Rigid frame structure；
7) remaining earthwork in excavation pit, and reclaim interim campshed, pour basement bottom board；
8) the most successively construct basement, and remove rigid frame structure.
In the preferred version of construction method of the present invention, step 8) in when removing rigid frame structure, if, with rigidity
Frame structure as basement structure ingredient, then retains long beam, short beam and column, only removes brace, otherwise will
Long beam, short beam, column and brace are all removed.
In the preferred version of construction method of the present invention, step 6) in earth excavation to after absolute altitude at the bottom of foundation ditch, also at foundation ditch
Bottom construction paxilla and bottom one layer of brace.
Beneficial effect: compared with traditional foundation pit supporting construction, the invention have the advantages that
The rigid frame posture internal support of foundation pit structure of the present invention, decreases support and the quantity of column, thus decreases work
Cheng Liang, reduces construction investment and shortens the duration, simultaneously as inner support is few, cutting the earth, it is little to be affected by inner support,
Expense and the time cut the earth all can reduce；When the present invention rigid frame posture internal support of foundation pit structure each layer absolute altitude with ground
Lower room each floor absolute altitude is consistent, and column with basement structure post when consistent, rigid frame posture internal support of foundation pit structure can
To double as basement structure, the two is made to unite two into one, further investment reduction, the reduction of erection time.
Accompanying drawing explanation
Fig. 1 is rigid frame posture internal support of foundation pit structural plan schematic diagram.
Fig. 2 be the earth excavation between interim campshed and gear soil sealing campshed on earth time rigid frame generalized section.
Fig. 3 is that rigid frame completes, remaining earth excavation rear rigid frame generalized section on earth in hole.
Figure has: column 1, long beam 2, short beam 3, brace 4, interim campshed 5, gear soil sealing campshed 6, side bar 7,
Base plate 8, paxilla 9, lower prop 11, upper prop 12.
Detailed description of the invention
Below in conjunction with Figure of description and embodiment to the present invention technical scheme be described in further details.
The rigid frame posture internal support of foundation pit structure of the present invention is arranged along foundation ditch surrounding, including the gear being arranged at foundation ditch periphery
Soil sealing campshed 6 with gear soil sealing campshed 6 be connected side bar 7, the rigid frame structure being arranged in foundation ditch,
The interim campshed 5 being connected with described rigid frame structure inside edge, described rigid frame structure is by the long beam 2 intersected
With short beam 3, be arranged on the column 1 at described long beam 2 and short beam 3 crossed node and constitute, long beam 2 and short beam 3 phase
Next layer of node and its handed in same short beam 3 perpendicular to corner node between be connected and have brace 4, tightly
Short beam 3 and the long beam 2 of adjacent margin of foundation pit are also connected with side bar 7；
Described column 1 uses latticed steel structure or steel pipe, by being arranged on the lower prop 11 of below hole end absolute altitude and arranging
Upper prop 12 more than the end absolute altitude of hole is formed by connecting.
In the preferred embodiment of rigid frame posture internal support of foundation pit structure of the present invention, described rigid frame structure is arranged many
The long beam 2 of layer and short beam 3, the node of every layer long beam 2 and short beam 3 is all connected with column 1.
In the another kind of preferred embodiment of rigid frame posture internal support of foundation pit structure of the present invention, rigid frame structure is arranged
The long beam of monolayer 2 and short beam 3, the lower end of described brace 4 is connected with the column 1 at foundation ditch bottom surface and side bar 7.
In the preferred embodiment of rigid frame posture internal support of foundation pit structure of the present invention, long beam 2 in rigid frame structure,
Short beam 3 and the position of column 1, absolute altitude, sectional dimension and mechanical characteristic want sum of parameters true according to the design of basement
Fixed, mechanical characteristic here refers to the bending resistance in cross section, shear resistant capacity.
In the preferred version of rigid frame posture internal support of foundation pit structure of the present invention, base plate 8 is provided below and is positioned at the bottom of foundation ditch
Paxilla 9 below absolute altitude, base plate 8 is connected with column 1, brace 4 and gear soil sealing campshed 6 and together pours, institute
State paxilla 9 to insert in soil layer.
In the present invention, long beam is arranged parallels with side bar, and short beam arranges perpendicular with side bar.
When each layer absolute altitude layer each with basement absolute altitude of the rigid frame posture internal support of foundation pit structure of the present invention is consistent and vertical
Post and basement post are away from identical, and the sectional dimension of long beam, short beam and column in structure and mechanical characteristic are tied with basement
When the design parameter of each respective members of structure is consistent, rigid frame posture internal support of foundation pit structure just can double as basement knot
Structure, thus eliminate column, eliminate short beam and Chang Liang, this basement structure and rigid frame posture internal support of foundation pit
Uniting two into one of structure, has greatly saved investment, has shortened the duration.
Topmost one layer of side bar is generally arranged at the top keeping off soil sealing campshed 6, and fixing connection；Remaining side bar is arranged
At the waist of gear soil sealing campshed, long beam 2, short beam 3 and brace 4 all intersect with column 1 and fixing connection, long beam,
Short beam, the brace number of plies vertically can be monolayer, multilamellar, is specifically determined by calculating.
The present invention does not limit the columns of column 1, include in other words one across and the situation of multispan rigid frame,
The Pin number of concrete framework is determined by calculating.
The lower prop 11 of column 1 is arranged on below hole end absolute altitude, and upper prop 12 is arranged on more than hole end absolute altitude, upper prop 12
Use latticed steel structure or steel pipe.
In order to improve the rigidity of rigid frame posture inner supporting structure further, reduce the deformation of supporting construction, earth excavation
After on earth, some paxillas 9 can be squeezed into according in design soil below basement, and these paxillas are cast in underground
In the base plate of room, together with i.e. basement bottom board is cast in column, brace, gear soil sealing campshed and paxilla, define
One entirety, the quantity of paxilla, length, arrangement and position are determined by designing calculating, are not limited by schematic diagram.
The construction method of the rigid frame posture internal support of foundation pit structure of the present invention, it comprises the concrete steps that:
1) gear soil sealing campshed 6, column 1 and interim campshed 5 are constructed in construction；
2) earth excavation is high to the stake top mark of column 1, interim campshed 5 and gear soil sealing campshed 6；
3) one layer long, the top of pouring construction beam 2, short beam 3 and side bar 7；
4) cut the earth downwards between gear soil sealing campshed 6 at interim campshed 5, until the end absolute altitude of the long beam of the second layer 2.
5) the construction long beam of the second layer 2, short beam 3, oblique between side bar 7, and ground floor short beam and second layer short beam
Bar 4；
6) by above-mentioned steps 2) 5) continue construction, until earth excavation is to absolute altitude at the bottom of foundation ditch, paxilla 9 of constructing,
Pour base plate 8, construct whole rigid frame structure；
7) remaining earthwork in excavation pit, and reclaim interim campshed 5, pour basement bottom board 8；
8) the most successively construct basement, and remove rigid frame structure.
In the preferred version of construction method of the present invention, step 8) in when removing rigid frame structure, if, with framework
Structure as basement structure ingredient, then retains long beam 2, short beam 3 and column 1, only removes brace 4, otherwise
Long beam 2, short beam 3, column 1 and brace 4 are all removed.
In the preferred version of construction method of the present invention, step 6) in earth excavation to after absolute altitude at the bottom of foundation ditch, also at foundation ditch
Bottom construction paxilla 9 and bottom one layer of brace 4.
Above-described embodiment is only the preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill of the art
For personnel, under the premise without departing from the principles of the invention, it is also possible to make some improvement and equivalent, these are right
The claims in the present invention improve with equivalent after technical scheme, each fall within protection scope of the present invention.
Claims (8)
1. a rigid frame posture internal support of foundation pit structure, it is characterised in that this supporting construction is arranged along foundation ditch surrounding,
Including be arranged at side bar (7) that gear soil sealing campshed (6) of foundation ditch periphery is connected with gear soil sealing campshed (6),
The interim campshed (5) that the rigid frame structure being arranged in foundation ditch is connected with described rigid frame structure inside edge,
Described rigid frame structure by the long beam (2) intersected and short beam (3), be arranged on described long beam (2) and short beam (3)
Column (1) at crossed node is constituted, being positioned at of next layer of node and its that long beam (2) and short beam (3) intersect
A brace (4) is had to connecting between corner node, the short beam (3) of next-door neighbour's margin of foundation pit in same short beam (3) perpendicular
Also it is connected with side bar (7)；
Described column (1) uses latticed steel structure or steel pipe, by the lower prop (11) being arranged on below hole end absolute altitude
It is formed by connecting with the upper prop (12) being arranged on more than hole end absolute altitude.
Rigid frame posture internal support of foundation pit structure the most according to claim 1, it is characterised in that described rigidity
Frame structure arranges the long beam of multilamellar (2) and short beam (3), the node of every layer long beam (2) and short beam (3) all with
Column (1) connects.
Rigid frame posture internal support of foundation pit structure the most according to claim 1, it is characterised in that described rigidity
Frame structure arranges standing at the long beam of monolayer (2) and short beam (3), the lower end of described brace (4) and foundation ditch bottom surface
Post and side bar connect.
4. according to the rigid frame posture internal support of foundation pit structure described in claim 1,2 or 3, it is characterised in that institute
State the long beam (2) in rigid frame structure, short beam (3) and the position of column (1), absolute altitude, sectional dimension and be subject to
Force characteristic is according to the design requirement of basement and parameter determination.
5. according to the rigid frame posture internal support of foundation pit structure described in claim 1,2 or 3, it is characterised in that institute
Stating and be provided with base plate (8) at absolute altitude at the bottom of foundation ditch, described base plate (8) is provided below and is positioned at below absolute altitude at the bottom of foundation ditch
Paxilla (9), base plate (8) is connected with column (1), brace (4) and gear soil sealing campshed (6) and together pours,
In described paxilla (9) is inserted in soil layer and is mounted in base plate (8).
6. use a construction method for rigid frame posture internal support of foundation pit structure described in claim 1,2,3 or 4,
It is characterized in that, comprising the concrete steps that of this construction method:
1) gear soil sealing campshed (6), column (1) and interim campshed (5) are constructed in construction；
2) earth excavation is high to the stake top mark of column (1), interim campshed (5) and gear soil sealing campshed (6)；
3) one layer, the top of pouring construction long beam (2), short beam (3) and side bar (7)；
4) cut the earth downwards between gear soil sealing campshed (6) at interim campshed (5), until the long beam of the second layer (2)
End absolute altitude；
5) the construction long beam of the second layer (2), short beam (3), side bar (7), and ground floor short beam and second layer short beam
Between brace (4)；
6) by above-mentioned steps 2) to 5) continue construction, until earth excavation is to absolute altitude at the bottom of foundation ditch, construct whole
Rigid frame structure；
7) remaining earthwork in excavation pit, and reclaim interim campshed (5), pour basement bottom board (8)；
8) the most successively construct basement, and remove rigid frame structure.
Construction method the most according to claim 6, it is characterised in that described step 8) middle dismounting rigid frame
During structure, if, with rigid frame structure as basement structure ingredient, then retain long beam (2), short beam (3)
With column (1), only remove brace (4), otherwise by long beam (2), short beam (3), column (1) and brace (4)
All remove.
8. according to the construction method described in claim 6 or 7, it is characterised in that described step 6) in earth excavation
After absolute altitude at the bottom of foundation ditch, also construct bottom foundation ditch paxilla (9) and bottom one layer of brace (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410696503.7A CN104404967B (en) | 2014-11-26 | 2014-11-26 | Rigid frame posture internal support of foundation pit structure and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410696503.7A CN104404967B (en) | 2014-11-26 | 2014-11-26 | Rigid frame posture internal support of foundation pit structure and construction method |
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| Publication Number | Publication Date |
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| CN104404967A CN104404967A (en) | 2015-03-11 |
| CN104404967B true CN104404967B (en) | 2016-09-21 |
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| CN201410696503.7A Active CN104404967B (en) | 2014-11-26 | 2014-11-26 | Rigid frame posture internal support of foundation pit structure and construction method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965586B (en) * | 2019-11-25 | 2021-06-29 | 中国十九冶集团有限公司 | Construction method of multi-layer basement structure of municipal road |
| CN113338296B (en) * | 2020-03-02 | 2022-05-13 | 浙江明思特建筑支护技术有限公司 | Connecting piece for foundation pit steel pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650133A (en) * | 2012-04-19 | 2012-08-29 | 苏州工业园区设计研究院股份有限公司 | Method and object for constructing half top-down deep base pit supporting structure of side frame |
| CN103074898A (en) * | 2013-01-18 | 2013-05-01 | 江苏鸿基科技有限公司 | Multi-row pile foundation pit support structure and construction method thereof |
| CN103074899A (en) * | 2013-01-18 | 2013-05-01 | 周文松 | Subdepot pier-type foundation pit support structure and construction method |
| CN103452121A (en) * | 2013-08-26 | 2013-12-18 | 中冶集团武汉勘察研究院有限公司 | Long pile and short pile combined single-row pile and horizontal internal support pile supporting structure and construction method thereof |
| CN204282372U (en) * | 2014-11-26 | 2015-04-22 | 南京东大鸿基新技术发展有限公司 | A kind of band brace framework internal support of foundation pit structure |
-
2014
- 2014-11-26 CN CN201410696503.7A patent/CN104404967B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650133A (en) * | 2012-04-19 | 2012-08-29 | 苏州工业园区设计研究院股份有限公司 | Method and object for constructing half top-down deep base pit supporting structure of side frame |
| CN103074898A (en) * | 2013-01-18 | 2013-05-01 | 江苏鸿基科技有限公司 | Multi-row pile foundation pit support structure and construction method thereof |
| CN103074899A (en) * | 2013-01-18 | 2013-05-01 | 周文松 | Subdepot pier-type foundation pit support structure and construction method |
| CN103452121A (en) * | 2013-08-26 | 2013-12-18 | 中冶集团武汉勘察研究院有限公司 | Long pile and short pile combined single-row pile and horizontal internal support pile supporting structure and construction method thereof |
| CN204282372U (en) * | 2014-11-26 | 2015-04-22 | 南京东大鸿基新技术发展有限公司 | A kind of band brace framework internal support of foundation pit structure |
Non-Patent Citations (1)
| Title |
|---|
| 预应力混凝土管桩（后张法）在深基坑支护中的应用;李超等;《土工基础》;20080229;第22卷(第1期);第26-29页 * |
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