CN104264685B - The construction method that a kind of mid-board regional structure is closed up - Google Patents
The construction method that a kind of mid-board regional structure is closed up Download PDFInfo
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- CN104264685B CN104264685B CN201410508299.1A CN201410508299A CN104264685B CN 104264685 B CN104264685 B CN 104264685B CN 201410508299 A CN201410508299 A CN 201410508299A CN 104264685 B CN104264685 B CN 104264685B
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- mid
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Classifications
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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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2220/00—Temporary installations or constructions
Abstract
The invention discloses the construction method that a kind of mid-board regional structure is closed up, comprise the following steps: base plate support replacement band of constructing in mid-board side；N-th layer structure base slab under construction ground above backplanes support band；Remove the n-th road horizontal support, the n-th 1 Rotating fields Vierendeel girders, floor and temporary support under construction ground；The most upwards construct, until removing the 1st road horizontal support；Construction mid-board opposite side；Removing mid-board, vertical direction uses and is from top to bottom layered dismounting method, and horizontal direction uses piecemeal to jump storehouse dismounting method, immediately respective regions is carried out folding structures construction after every piece of mid-board is removed；Remove temporary support.The present invention sets up temporary support by setting a roof beam in place in structural frames near mid-board one side-lower, can effectively support the structural frames near mid-board side to set a roof beam in place, potential safety hazard is brought due to the broken concrete that falls when avoiding removing mid-board, without setting up full hall bracing frame, decrease material and manpower consumption.
Description
Technical field
The present invention relates to the construction method that a kind of mid-board regional structure is closed up.
Background technology
Pattern foundation pit supporting structure is for ensureing Underground Construction and the safety of foundation ditch surrounding enviroment, to foundation pit side-wall and week
A gear, reinforcing and the protective measure that surrounding environment uses.Along with the construction space of building is more and more narrower and small, all
Surrounding environment becomes increasingly complex, and the difficulty of foundation pit supporting project requires more and more higher.
When foundation ditch area is bigger or adjacent to Important buildings such as subways, generally use the side of foundation ditch piecemeal supporting
Method, sets up some mid-boards in the middle of foundation ditch, is divided into several piecemeal foundation ditches and carries out supporting respectively,
Multiple tracks horizontal support is generally set up when piecemeal foundation ditch is carried out supporting.Level need to be removed when constructing underground structure
Support and mid-board, and mid-board region is carried out folding structures, to complete the construction of whole underground engineering.
In practical operation, due to when mid-board is removed, for guaranteeing that deep pit monitor need to synchronize to consider that structure support replacement is asked
Topic, therefore disposably cannot remove mid-board on earth, unavoidably has perhaps when meanwhile removing mid-board
Many broken concretes fall in the cantilever design of both sides, and the construction to folding structures and underground engineering brings safety hidden
Suffer from.For problem above, use the safety setting up full hall bracing frame below cantilever to improve construction at present
Can, but the method material and manpower consumption are big, operation complexity, efficiency is low.
Summary of the invention
The present invention is in order to overcome above deficiency, it is provided that a kind of construction safety that both can guarantee that folding structures, again
The construction method that the mid-board regional structure of construction complexity and material consumption is closed up can be reduced.
In order to solve above-mentioned technical problem, the technical scheme is that a kind of mid-board regional structure is closed up
Construction method, comprise the following steps:
If each piecemeal foundation ditch is from top to bottom provided with n road horizontal support, n is positive integer, per pass horizontal support pair
Answer one layer of underground structure and one layer of mid-board；
S1: base plate support replacement band of constructing in mid-board side, mid-board is withstood in the side of base plate support replacement band；
S2: n-th layer structure base slab under construction ground above base plate support replacement band；
S3: remove the n-th road horizontal support, the (n-1)th Rotating fields Vierendeel girder, floor and prop up under construction ground temporarily
Supportting, mid-board is withstood in described floor side, and temporary support is located at structural frames and is set a roof beam in place near mid-board one side-lower；
S4: repeat step S3, the most upwards construct, until removing the 1st road horizontal support；
S5: repeat step S1-S4 for mid-board opposite side；
S6: remove mid-board, vertical direction uses and is from top to bottom layered dismounting method, and horizontal direction uses piecemeal
Jump storehouse dismounting method, after every piece of mid-board is removed, immediately respective regions is carried out folding structures construction, until institute
Mid-board is had to remove complete；
S7: remove temporary support.
Further, floor described in described step S3 be located at described structural frames set a roof beam in place top.
Further, structural frames described in described step S3 is set a roof beam in place and is provided with spacing between septum wall, and
Corresponding side is provided with reserved steel bar.
Further, described spacing is in the range of 0.8-1m.
Further, described step S6 comprises the following steps:
S61: mid-board is from top to bottom provided with n-layer, and every layer of mid-board is divided into m piecemeal, and m is positive integer,
And it is divided into odd number piecemeal and even number piecemeal two parts；
S62: for the 1st layer of mid-board, select the part first removed, in one direction to the part selected
Remove successively, after often removing a piecemeal, dig out one section at both sides floor respectively near mid-board side
Connect reinforcing bar to weld, and the reserved steel bar of structure on two sides Vierendeel girder is welded, complete this piecemeal district
The folding structures in territory, then carries out identical operation successively to remaining piecemeal；
S63: another piecemeal collection is removed in same direction and folding structures construction, until in the 1st layer
Partition wall regional structure closure construction is complete；
S64: repeat step S62-S63 to the 2nd layer to n-th layer mid-board the most successively.
Further, the reinforcing bar that the structure on two sides Vierendeel girder of described step S62 is reserved can also pass through straight thread
Sleeve connection.
Further, in described step S62, it is additionally included in casting concrete at described reinforcement welding.
Further, the intensity of described concrete need to reach design strength more than 70% and just performs step S63.
The construction method closed up of mid-board regional structure that the present invention provides, by structural frames set a roof beam in place near in
Partition wall one side-lower sets up temporary support, can effectively support the structural frames near mid-board side and set a roof beam in place, keep away
Potential safety hazard is brought due to the broken concrete that falls, it is not necessary to set up full hall bracing frame during free removal mid-board,
Decrease material and manpower consumption；Make floor side withstand mid-board simultaneously, can effectively transmit the outer soil of foundation ditch
Pressure, is further ensured that deep pit monitor.
Accompanying drawing explanation
Fig. 1 is the flow chart of the construction method that mid-board regional structure of the present invention is closed up；
Fig. 2 a-2e is the construction process figure of the embodiment of the present invention；
Fig. 3 is embodiment of the present invention mid-board piecemeal schematic diagram.
Shown in figure: 1, horizontal support；2, mid-board；3, base plate support replacement band；4, structure base slab；5、
Structural frames is set a roof beam in place；6, floor；7, temporary support；8, concrete.
Detailed description of the invention
The present invention is described in detail below in conjunction with the accompanying drawings:
As it is shown in figure 1, the present invention provides the construction method that a kind of mid-board regional structure is closed up, including following
Step:
If each piecemeal foundation ditch is from top to bottom provided with n road horizontal support 1, n is positive integer, per pass horizontal support
Corresponding one layer of underground structure and one layer of mid-board 2, i.e. have n-layer underground structure and n-layer mid-board 2, need explanation
, underground structure refer in foundation ditch build works, be followed successively by from top to bottom the 1st layer, underground,
Lower 2nd layer ... underground n-th layer.Such as: set n=3 in the present embodiment, then the horizontal support close to horizontal plane is
1st road horizontal support, is followed successively by downwards the 2nd, the 3rd road horizontal support, and other structures are as the same.
S1: base plate support replacement band 3 of constructing in mid-board 2 side, mid-board 2 is withstood in the side of base plate support replacement band 3；
S2: 3-tier architecture base plate 4 under construction ground above base plate support replacement band 3；
S3: remove the 3rd road horizontal support 1, the 2nd Rotating fields Vierendeel girder 5 under construction ground, floor 6 and interim
Supporting 7, structural frames is set a roof beam in place and is set at regular intervals between 5 and mid-board 2, and spacing range is 0.8-1m, preferably
For 0.8m, and structural frames 5 corresponding sides of setting a roof beam in place are provided with reserved steel bar (not marking in figure)；Knot is located at by floor 6
Above structure Vierendeel girder 5, and mid-board 2 is withstood in side, and effectively the pressure of the earthwork outside transmission foundation ditch, props up temporarily
Support 7 is located at structural frames and is set a roof beam in place 5 near mid-board 2 one side-lower, as shown in Figure 2 a；
S4: repeat step S3, the most upwards construct, until removing the 1st road horizontal support 1, now underground
1st Rotating fields Vierendeel girder 5, floor 6 and temporary support 7 are also constructed complete, as shown in Figure 2 b；
S5: repeat step S1-S4 for mid-board 2 opposite side, until removing all of horizontal support 1, this
Set a roof beam in place 5, floor 6 and temporary support 7 of Shi Suoyou structural frames is also constructed complete, as shown in Figure 2 c；
S6: remove mid-board 2, vertical direction uses and is from top to bottom layered dismounting method, and horizontal direction uses piecemeal
Jump storehouse dismounting method, be i.e. spaced dismounting method, after every piece of mid-board 2 is removed, immediately respective regions is carried out structure
Closure construction, until all mid-boards 2 are removed complete, as shown in Figure 2 d, step S6 specifically includes following
Step:
S61: mid-board 2 from top to bottom sets and haves three layers, and every layer of mid-board 2 is divided into m piecemeal, and m is just
Integer, and it is divided into odd number piecemeal collection and even number piecemeal collection two parts, when being odd number such as m, then odd number piecemeal collection
Including the 1st, 3 ... m piecemeal, even number piecemeal collection includes the 2nd, 4 ... m-1 piecemeal；When m is even number, odd number
Piecemeal collection includes the 1st, 3 ... m-1 piecemeal, and even number piecemeal collection includes the 2nd, 4 ... m piecemeal, in the present embodiment
M=6, as shown in Figure 3；
S62: for the 1st layer of mid-board 2, select the piecemeal collection first removed, in one direction to selection
Piecemeal is removed successively, after often removing a piecemeal, digs respectively near mid-board 2 side at both sides floor
Go out one section of connection reinforcing bar to weld, and the reserved steel bar of structure on two sides Vierendeel girder 5 is welded, complete
The folding structures of this segmented areas, then carries out identical operation successively to remaining piecemeal；During such as m=6,
Select first to remove odd number piecemeal collection, i.e. to the 1st, 3,5 piecemeals remove successively, removing the 1st point
After block, this piecemeal correspondence position is carried out folding structures construction, the most successively to the 3rd, 5 piecemeals carry out identical
Operation, until odd number piecemeal set pair answer folding structures construction complete；
S63: another piecemeal collection is removed in same direction and folding structures construction, i.e. to the 2nd, 4,
6 piecemeals carry out removing and folding structures successively, until the 1st layer of corresponding regional structure closure construction of mid-board 2
Complete；
S64: repeat step S62-S63 to the 2nd layer to the 3rd layer the most successively.
S7: remove temporary support 7, as shown in Figure 2 e.
Preferably, in described step S62, the reserved steel bar of structure on two sides Vierendeel girder 5 can also pass through straight spiral shell
Stricture of vagina sleeve connection, the most also need at reinforcement welding casting concrete 8, the intensity of described concrete eight need to reach
Design strength more than 70% just performs step S63, and wherein design strength is that designer ties according in work progress
Structure closes up the maximum weighted at place and draws.
In sum, the construction method that the mid-board regional structure that the present invention provides is closed up, by structural frames
Set a roof beam in place and 5 set up temporary support 7 near mid-board 2 one side-lower, can effectively support near mid-board 2 side
Structural frames set a roof beam in place 5, it is to avoid bring potential safety hazard due to the broken concrete that falls when removing mid-board 2,
Without setting up full hall bracing frame, decrease material and manpower consumption；Piecemeal is used to jump storehouse when removing mid-board 2
Next piecemeal can be constructed after a upper partitioned organization closes up by method immediately, saves the time, improves work effect
Rate；Make floor 6 side withstand mid-board 2 simultaneously, can effectively transmit the pressure of the outer soil of foundation ditch, be further ensured that
Deep pit monitor.
Although in description being illustrated embodiments of the present invention, but these embodiments are intended only as
Prompting, should not limit protection scope of the present invention.Carry out various province without departing from the spirit and scope of the present invention
Slightly, replace and change should be included in protection scope of the present invention.
Claims (6)
1. the construction method that a mid-board regional structure is closed up, it is characterised in that comprise the following steps:
If each piecemeal foundation ditch is from top to bottom provided with n road horizontal support, n is positive integer, per pass level
Supporting corresponding one layer of underground structure and one layer of mid-board, described underground structure refers to build in foundation ditch
Works, is followed successively by the 1st layer, underground, the 2nd layer, underground ... underground n-th layer from top to bottom；
S1: base plate support replacement band of constructing in mid-board side, mid-board is withstood in the side of base plate support replacement band；
S2: n-th layer structure base slab under construction ground above base plate support replacement band；
S3: remove the n-th road horizontal support, the (n-1)th Rotating fields Vierendeel girder, floor and face under construction ground
Time support, described floor side withstands mid-board, and temporary support is located at structural frames and is set a roof beam in place near mid-board
One side-lower, described structural frames is set a roof beam in place and is provided with spacing between septum wall, and corresponding side is provided with
Reserved steel bar；
S4: repeat step S3, the most upwards construct, until removing the 1st road horizontal support；
S5: repeat step S1-S4 for mid-board opposite side；
S6: remove mid-board, vertical direction uses and is from top to bottom layered dismounting method, and horizontal direction uses
Piecemeal jumps storehouse dismounting method, immediately respective regions is carried out folding structures construction after every piece of mid-board is removed,
Until all mid-boards are removed complete, comprise the following steps:
S61: mid-board is from top to bottom provided with n-layer, and every layer of mid-board is divided into m piecemeal, and m is
Positive integer, and it is divided into odd number piecemeal collection and even number piecemeal collection；
S62: for the 1st layer of mid-board, select the piecemeal collection first removed, in one direction to selection
Piecemeal collection remove successively, often remove after a piecemeal, at both sides floor near mid-board side
Dig out one section of connection reinforcing bar respectively to weld, and the reserved steel bar of structure on two sides Vierendeel girder is welded
Connect, complete the folding structures of this segmented areas, then remaining piecemeal is carried out successively identical operation；
S63: another piecemeal collection is removed in same direction and folding structures construction, until the 1st
Layer mid-board regional structure closure construction is complete；
S64: repeat step S62-S63 to the 2nd layer to n-th layer mid-board the most successively；
S7: remove temporary support.
The construction method that mid-board regional structure the most according to claim 1 is closed up, it is characterised in that
Floor described in described step S3 be located at described structural frames set a roof beam in place top.
The construction method that mid-board regional structure the most according to claim 1 is closed up, it is characterised in that
Described spacing is in the range of 0.8-1m.
The construction method that mid-board regional structure the most according to claim 1 is closed up, it is characterised in that
The reinforcing bar that the structure on two sides Vierendeel girder of described step S62 is reserved is connected by straight screw sleeve.
The construction method that mid-board regional structure the most according to claim 1 is closed up, it is characterised in that
In described step S62, it is additionally included in casting concrete at described reinforcement welding.
The construction method that mid-board regional structure the most according to claim 5 is closed up, it is characterised in that
The intensity of described concrete need to reach design strength more than 70% and just perform step S63.
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| CN201410508299.1A CN104264685B (en) | 2014-09-28 | 2014-09-28 | The construction method that a kind of mid-board regional structure is closed up |
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| CN104264685B true CN104264685B (en) | 2016-08-24 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104831736A (en) * | 2015-04-15 | 2015-08-12 | 中国建筑第八工程局有限公司 | Support changing method and support changing structure of middle wall of foundation trench |
| CN105951846A (en) * | 2016-06-21 | 2016-09-21 | 中铁第四勘察设计院集团有限公司 | Baseplate force transferring structure of middle partition enclosure structure for deep foundation fit and construction method thereof |
| CN106760621A (en) * | 2016-11-21 | 2017-05-31 | 上海建工二建集团有限公司 | One kind is encorbelmented floor temporary support structure and construction method |
| CN109736593B (en) * | 2019-02-27 | 2021-01-15 | 中铁十局集团第五工程有限公司 | Underground engineering group pit mid-partition wall chiseling method |
| CN113982036A (en) * | 2021-10-26 | 2022-01-28 | 上海建工一建集团有限公司 | Construction method for structure penetration when frame column and mid-partition wall are overlapped |
| CN114232683B (en) * | 2022-01-11 | 2023-02-10 | 华东建筑设计研究院有限公司 | Support changing and structural connecting method during conflict between temporary separation enclosure wall and structural frame column |
| CN114351762A (en) * | 2022-01-26 | 2022-04-15 | 中国建筑第八工程局有限公司 | Construction method for clearly dismantling partition wall in basement re-building stage |
| CN115404904A (en) * | 2022-06-23 | 2022-11-29 | 中国建筑第八工程局有限公司 | Underground diaphragm wall chamber-divided type dismantling construction method adjacent to subway foundation pit |
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