CN105507329A - Support replacement system for base plates of foundation pit of mucky soil layer in deep foundation pit support construction - Google Patents
Support replacement system for base plates of foundation pit of mucky soil layer in deep foundation pit support construction Download PDFInfo
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- CN105507329A CN105507329A CN201510852086.5A CN201510852086A CN105507329A CN 105507329 A CN105507329 A CN 105507329A CN 201510852086 A CN201510852086 A CN 201510852086A CN 105507329 A CN105507329 A CN 105507329A
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- iron
- foundation pit
- support
- loose tool
- support replacement
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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)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a support replacement system for base plates of a foundation pit of a mucky soil layer in deep foundation pit support construction. The support replacement system comprises a support replacement slab band and a force transfer device, wherein the support replacement slab band is arranged between a foundation pit support structure and a brick mould, and the force transfer device is arranged in a late poured band; the support replacement slab band comprises a constructional anti-crack reinforcement bottom bar, I-steel and a constructional anti-crack reinforcement surface bar; the I-steel is located between the outer side of the brick mould and a fender post; the force transfer device comprises first I-steel and second I-steel; the outer end of the first I-steel and the outer end of the second I-steel are respectively buried in base plates of two sides; the first I-steel and the second I-steel are connected through bolts. According to the support replacement system disclosed by the invention, by combining with the stiffness characteristic of the foundation pit support structure, the I-steel is adopted by the support replacement slab band to perform targeted local reinforcement at the position of the fender post; a support replacement slab band of which the stiffness is high and low by matching with the foundation pit support structure; by arranging the force transfer in the late poured band, the base plates can be effectively connected into a whole to form a horizontal support structure for the base plates.
Description
Technical field
The invention belongs to technical field of building construction, be specifically related to silt soil strata base plate of foundation pit support replacement system in a kind of deep foundation pit supporting construction.
Background technology
At present, in deep foundation pit supporting construction process, usually adopt steel or concrete support stake and waling as space enclosing structure, in foundation ditch, waling position arranges steel or concrete horizontal support, forms integer support system.During support replacement, at basement bottom board or arrange support replacement strip between floor location and foundation pit enclosure structure, together with basement bottom board or floor slab structure, support is put down to underground water and carry out support replacement.Usual support replacement strip is uniform reinforcement; and in pattern foundation pit supporting structure space enclosing structure fender post rigidity and shear-carrying capacity much larger than the sealing space enclosing structure be arranged between fender post; the easy like this support replacement strip that causes is destroyed because transmitting the excessive sealing space enclosing structure that causes of load to sealing space enclosing structure, and deep pit monitor is on the hazard.And most of base plate is all provided with ater-casting, and current support replacement scheme is limited in one's ability because resisting horizontal load, can not normally carry out sole plate support replacement under being provided with the operating mode of ater-casting at base plate.
Summary of the invention
The object of the present invention is to provide silt soil strata base plate of foundation pit support replacement system in a kind of deep foundation pit supporting construction, simple structure, be applicable to the Large Foundation Pit that base plate is provided with ater-casting, effectively the ligand pit enclosure rigidity of structure can carry out power transmission, opposing horizontal loading ability is strong, support replacement is effective, do not affect original structure design and waterproof effect, ensure that foundation ditch sealing space enclosing structure is not easily destroyed.
The technical solution adopted for the present invention to solve the technical problems is:
Silt soil strata base plate of foundation pit support replacement system in a kind of deep foundation pit supporting construction is provided, this system comprises foundation pit enclosure structure, bed course and brick loose tool, described foundation pit enclosure structure comprises fender post and is arranged on the sealing space enclosing structure between adjacent fender post, described brick loose tool is built by laying bricks or stones outside basement bottom board border, and this system also comprises support replacement strip and load transfer device; Wherein,
Described support replacement strip is arranged between foundation pit enclosure structure and brick loose tool, described support replacement strip comprises muscle at the bottom of structure cracking resistance reinforcing bar, i iron and structure cracking resistance reinforcing bar gluten, at the bottom of described structure cracking resistance reinforcing bar, muscle is arranged in outside brick loose tool and between fender post and sealing space enclosing structure, described i iron is placed on the top of muscle at the bottom of structure cracking resistance reinforcing bar outside brick loose tool and between fender post, described i iron withstands brick loose tool and fender post by the support end plate being arranged on its two ends, described structure cracking resistance reinforcing bar gluten is arranged in the top of i iron outside brick loose tool and between fender post and sealing space enclosing structure, concreting between foundation pit enclosure structure and brick loose tool also carries out maintenance,
Described load transfer device comprises the first i iron and the second i iron, all be provided with at least two below the lower wing plate of described first i iron and the second i iron and support split heads, the outer end of described first i iron and the second i iron is respectively arranged with the first end plate and the second end plate, the web both sides of described first i iron are vertically installed with fixed head respectively, and the web both sides of described second i iron are vertically installed with two perforate fixed heads respectively; Before the base plate of building both sides, ater-casting, described load transfer device is arranged in ater-casting, second end plate of the first end plate of the first i iron outer end and the second i iron outer end is imbedded in the base plate of both sides respectively, after building underplate concrete, install in the perforate fixed head of the second i iron and screw bolt, make the end of bolt hold out against the fixed head of the first i iron, thus the base plate of both sides is connected.
By technique scheme, the degree of depth >=500mm in the base plate of both sides is imbedded in the outer end of described first i iron and the second i iron.
The beneficial effect that the present invention produces is: the present invention passes through outside base plate brick loose tool and arranges support strip between foundation pit enclosure structure, in conjunction with foundation pit enclosure structure stiffness characteristics, supporting strip adopts i iron to carry out specific aim local strengthening in fender post position, coordinate foundation pit enclosure structure to define a rigidity to have and have by force weak support strip, add while supporting strip rigidity and bearing capacity, the weak part avoiding sealing space enclosing structure is owing to supporting the excessive and space enclosing structure potential safety hazard that causes of strip rigidity; Meanwhile, by arranging load transfer device in ater-casting, effectively base plate can be linked to be entirety, define floor level braced structures.This method is simple, and opposing horizontal loading ability is strong, support replacement is effective, does not affect original structure design and waterproof effect, is applicable to the direct support replacement of base plate that base plate is provided with the Large Foundation Pit of ater-casting, and cost reduction, duration shorten greatly.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the top view of the embodiment of the present invention;
Fig. 3 is the structural representation supporting strip in the embodiment of the present invention;
Fig. 4 is the structural representation of ater-casting load transfer device in the embodiment of the present invention.
In figure: horizontal support in 1-foundation ditch, 2-fender post, 3-supports strip, 301-constructs muscle at the bottom of cracking resistance reinforcing bar, 302-i iron, 303-supports end plate, 304-constructs cracking resistance reinforcing bar gluten, 4-brick loose tool, 5-ater-casting, 6-load transfer device, 601-first i iron, 602-second i iron, 603-supports split heads, 604-first end plate, 605-second end plate, 606-fixed head, 607-perforate fixed head, 608-bolt, 7-base plate, 8-foundation ditch, 9-bottom cushion, 10-sealing space enclosing structure.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As Figure 1-Figure 4, silt soil strata base plate of foundation pit support replacement system in a kind of deep foundation pit supporting construction, this system comprises foundation pit enclosure structure, bed course 9 and brick loose tool 4, foundation pit enclosure structure comprises fender post 2 and is arranged on the sealing space enclosing structure 10 between adjacent fender post 2, brick loose tool 4 is built by laying bricks or stones outside basement bottom board border, and this system also comprises support replacement strip 3 and load transfer device 6; Wherein,
Support replacement strip 3 is arranged between foundation pit enclosure structure and brick loose tool 4, support replacement strip 3 comprises muscle 301 at the bottom of structure cracking resistance reinforcing bar, i iron 302 and structure cracking resistance reinforcing bar gluten 304, at the bottom of structure cracking resistance reinforcing bar, muscle 301 is arranged in outside brick loose tool 4 and between fender post 2 and sealing space enclosing structure 10, i iron 302 is placed on the top of muscle 301 at the bottom of structure cracking resistance reinforcing bar outside brick loose tool 4 and between fender post 2, i iron 302 withstands brick loose tool 4 and fender post 2 by the support end plate 303 being arranged on its two ends, structure cracking resistance reinforcing bar gluten 304 is arranged in the top of i iron 302 outside brick loose tool 4 and between fender post 2 and sealing space enclosing structure 10, concreting between foundation pit enclosure structure and brick loose tool also carries out maintenance,
Load transfer device 6 comprises the first i iron 601 and the second i iron 602, all be provided with at least two below the lower wing plate of the first i iron 601 and the second i iron 602 and support split heads 603 (supporting the shape of split heads for " several " font), the outer end of the first i iron 601 and the second i iron 602 is respectively arranged with the first end plate 604 and the second end plate 605, the web both sides of the first i iron 601 are vertically installed with fixed head 606 respectively, and the web both sides of the second i iron 602 are vertically installed with two perforate fixed heads 607 respectively; Before the base plate of building both sides, ater-casting, load transfer device 6 is arranged in ater-casting 5, the first end plate 604 of the first i iron 601 outer end and the second end plate 605 of the second i iron 602 outer end is made to imbed in the base plate 7 of both sides respectively, after building underplate concrete, install in the perforate fixed head 607 of the second i iron and screw bolt 608, make the end of bolt 608 hold out against the fixed head 606 of the first i iron, thus the base plate 7 of both sides is connected.
In a preferred embodiment of the invention, as shown in Figure 4, the degree of depth >=500mm in both sides base plate 7 is imbedded in the outer end of the first i iron 601 and the second i iron 602.
As Figure 1-Figure 4, the base plate of foundation pit support replacement method using the present invention to carry out, comprises the following steps:
S1, as shown in Figure 1 and Figure 2, complete horizontal support 1 in foundation pit enclosure structure and foundation ditch and construct, foundation pit enclosure structure comprises fender post 2 and is arranged on the sealing space enclosing structure 10 between fender post 2, and soil excavation, to substrate, carries out bottom cushion 9 and constructs;
S2, as shown in Figure 1 and Figure 2, outside basement bottom board border, build brick loose tool 4 by laying bricks or stones, inside brick loose tool 4, carry out Slab Waterproof Construction;
S3, as shown in Figure 3, install outside brick loose tool 4 and between foundation pit enclosure structure and support strip 3: first outside brick loose tool 4 and between fender post 2 and sealing space enclosing structure 10, colligation constructs muscle 301 at the bottom of cracking resistance reinforcing bar bottom foundation ditch 8, then outside brick loose tool 4 and between fender post 2, i iron 302 is placed above muscle 301 at the bottom of structure cracking resistance reinforcing bar, i iron 302 withstands brick loose tool 4 and fender post 2 by the support end plate 303 being arranged on its two ends, above i iron 302, outside brick loose tool 4 and between fender post 2 and sealing space enclosing structure 10, colligation constructs cracking resistance reinforcing bar gluten 304 again, last concreting also carries out maintenance, formed and support strip,
S4, as shown in Figure 4, in bottom plate rear pouring tape 5, load transfer device 6 is installed: load transfer device 6 comprises the first i iron 601 and the second i iron 602, all be provided with at least two below the lower wing plate of the first i iron 601 and the second i iron 602 and support split heads 603, the outer end of the first i iron 601 and the second i iron 602 is respectively arranged with the first end plate 604 and the second end plate 605, the web both sides of the first i iron 601 are vertically installed with fixed head 606 respectively, the web both sides of the second i iron 602 are vertically installed with two perforate fixed heads 607 respectively, during installation, muscle at the bottom of base plate inside first colligation brick loose tool, then load transfer device 6 is placed on ater-casting 5 place, the first end plate 604 of the first i iron 601 outer end and the second end plate 605 of the second i iron 602 outer end is made to imbed in the base plate 7 of both sides respectively, base plate gluten inside colligation brick loose tool again, then underplate concrete is built, reach after requirement until maintenance, install in the perforate fixed head 607 of the second i iron 602 and screw bolt 608, the end of bolt 608 is made to hold out against the fixed head 606 of the first i iron, thus the base plate 7 of both sides is connected,
After S5, basement bottom board and support strip form integral level braced structures, horizontal support 1 in the foundation ditch namely more than dismountable base plate, completes support replacement.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (2)
1. silt soil strata base plate of foundation pit support replacement system in a deep foundation pit supporting construction, this system comprises foundation pit enclosure structure, bed course and brick loose tool, described foundation pit enclosure structure comprises fender post and is arranged on the sealing space enclosing structure between adjacent fender post, described brick loose tool is built by laying bricks or stones outside basement bottom board border, it is characterized in that, this system also comprises support replacement strip and load transfer device; Wherein,
Described support replacement strip is arranged between foundation pit enclosure structure and brick loose tool, described support replacement strip comprises muscle at the bottom of structure cracking resistance reinforcing bar, i iron and structure cracking resistance reinforcing bar gluten, at the bottom of described structure cracking resistance reinforcing bar, muscle is arranged in outside brick loose tool and between fender post and sealing space enclosing structure, described i iron is placed on the top of muscle at the bottom of structure cracking resistance reinforcing bar outside brick loose tool and between fender post, described i iron withstands brick loose tool and fender post by the support end plate being arranged on its two ends, described structure cracking resistance reinforcing bar gluten is arranged in the top of i iron outside brick loose tool and between fender post and sealing space enclosing structure, concreting between foundation pit enclosure structure and brick loose tool also carries out maintenance,
Described load transfer device comprises the first i iron and the second i iron, all be provided with at least two below the lower wing plate of described first i iron and the second i iron and support split heads, the outer end of described first i iron and the second i iron is respectively arranged with the first end plate and the second end plate, the web both sides of described first i iron are vertically installed with fixed head respectively, and the web both sides of described second i iron are vertically installed with two perforate fixed heads respectively; Before the base plate of building both sides, ater-casting, described load transfer device is arranged in ater-casting, second end plate of the first end plate of the first i iron outer end and the second i iron outer end is imbedded in the base plate of both sides respectively, after building underplate concrete, install in the perforate fixed head of the second i iron and screw bolt, make the end of bolt hold out against the fixed head of the first i iron, thus the base plate of both sides is connected.
2. system according to claim 1, is characterized in that, the degree of depth >=500mm in the base plate of both sides is imbedded in the outer end of described first i iron and the second i iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510852086.5A CN105507329B (en) | 2015-11-27 | 2015-11-27 | Silt soil strata base plate of foundation pit support replacement system in deep foundation pit supporting construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510852086.5A CN105507329B (en) | 2015-11-27 | 2015-11-27 | Silt soil strata base plate of foundation pit support replacement system in deep foundation pit supporting construction |
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| CN105507329A true CN105507329A (en) | 2016-04-20 |
| CN105507329B CN105507329B (en) | 2017-07-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501775A (en) * | 2020-04-14 | 2020-08-07 | 中国一冶集团有限公司 | Comprehensive system and method for supporting mucky soil layer deep foundation pit |
| CN112030983A (en) * | 2020-07-26 | 2020-12-04 | 王建国 | Support replacing system for bottom plate of mucky soil layer foundation pit in deep foundation pit supporting construction |
| CN114045838A (en) * | 2021-10-28 | 2022-02-15 | 浙江国进建设有限公司 | Foundation pit enclosure construction method |
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| WO2014155034A1 (en) * | 2013-03-27 | 2014-10-02 | David J Moore Limited | A shuttering support and related system |
| CN104452825A (en) * | 2014-10-13 | 2015-03-25 | 华东交通大学 | Post-cast strip replacing supporting structure used for disassembling building envelope support |
| CN105040709A (en) * | 2015-08-11 | 2015-11-11 | 中铁建大桥工程局集团第五工程有限公司 | Construction method for support replacement of fender-post retaining and protecting of deep foundation pit |
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2015
- 2015-11-27 CN CN201510852086.5A patent/CN105507329B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013056306A1 (en) * | 2011-10-19 | 2013-04-25 | Quickway Constructions Pty Ltd | Shoring box system and method |
| WO2014155034A1 (en) * | 2013-03-27 | 2014-10-02 | David J Moore Limited | A shuttering support and related system |
| CN103711131A (en) * | 2013-12-26 | 2014-04-09 | 中铁十三局集团第六工程有限公司 | Ultra-soft soil large-area deep foundation pit guard post support changing method |
| CN104452825A (en) * | 2014-10-13 | 2015-03-25 | 华东交通大学 | Post-cast strip replacing supporting structure used for disassembling building envelope support |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501775A (en) * | 2020-04-14 | 2020-08-07 | 中国一冶集团有限公司 | Comprehensive system and method for supporting mucky soil layer deep foundation pit |
| CN112030983A (en) * | 2020-07-26 | 2020-12-04 | 王建国 | Support replacing system for bottom plate of mucky soil layer foundation pit in deep foundation pit supporting construction |
| CN112030983B (en) * | 2020-07-26 | 2021-11-16 | 中铁建工集团有限公司 | Support replacing system for bottom plate of mucky soil layer foundation pit in deep foundation pit supporting construction |
| CN114045838A (en) * | 2021-10-28 | 2022-02-15 | 浙江国进建设有限公司 | Foundation pit enclosure construction method |
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| CN105507329B (en) | 2017-07-21 |
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