CN109723085A - A kind of deep basal pit point hole construction rib wall support changing structure for use and its construction method - Google Patents
A kind of deep basal pit point hole construction rib wall support changing structure for use and its construction method Download PDFInfo
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- CN109723085A CN109723085A CN201910042852.XA CN201910042852A CN109723085A CN 109723085 A CN109723085 A CN 109723085A CN 201910042852 A CN201910042852 A CN 201910042852A CN 109723085 A CN109723085 A CN 109723085A
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Abstract
The invention discloses a kind of deep basal pit point hole construction rib wall support changing structure for use and its construction methods, the 300mm thickness armored concrete support replacement shear wall being arranged from from basement bottom board to basement roof absolute altitude, between the level of support replacement shear wall and spacer is determined according to the foundation pit concrete support beam in IIth area, support replacement shear wall is constructed together with basement structure, is connect with ground-connecting-wall mid-board using bar planting.After rib wall support replacement, in I area's basement of having constructed after floor, the two floor earthwork in adjacent IIth area can be excavated, excavate adjacent area cubic metre of earth in advance, so latter two is cheated while carrying out construction operation.Construction technology is identical as permanent structure shear wall construction, and rib wall power transmission is reliable.The present invention is suitable for foundation pit point hole and excavates and return the base pit engineering built.
Description
Technical field
The present invention relates to construction field, in particular to a kind of deep basal pit point hole construction rib wall support changing structure for use and its construction party
Method.
Background technique
With Urbanization in China, base pit engineering scale is increasing, and cutting depth is deeper and deeper, and surrounding enviroment are more next
It is more complicated.Excavation of foundation pit depth generally reaches 20~30 meters, and excavation area is up to 2~60,000 m2, the units base such as subway, pipeline
In the strict demand of deformation control of foundation pit, it is desirable that be separated foundation pit, subregion carries out excavation and basement structure construction, gives base
Pit enclosure design, more stringent requirements are proposed for construction；Foundation pit surrounding environment tends to be complicated further, and City Buried Pipeline, subway are set
Apply, periphery shallow foundation building on deep foundation pit construction bring deformation influence it is more sensitive；In addition, further relating to work in work progress
Phase is nervous, robs the problems such as work, such as: pit earthwork, which excavates, crosses over the Spring Festival, exhibitions shut-down influence factor, if the downtime is not formed
The accumulative deformation of artesian water dewatering construction, foundation pit of structure base slab, downtime will cause to seriously affect to surrounding enviroment.How to solve
Certainly these problems are particularly important, for this purpose, we summarize a kind of rib wall support replacement construction in similar engineering practice,
Rib wall support replacement is set in foundation pit, in basement of having constructed after floor, two layers of earthwork of adjacent area can be excavated, meet the compression duration and
Surrounding enviroment etc. are protected to require.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of deep basal pit point hole construction rib wall support changing structure for use and its constructions
Method is broken after conventional I area's basement of foundation pit subregion project under construction Dai goes out positive negative zero, can excavate II area's foundation pit, IIth area
Foundation pit support force needs I area's basement floor of dividing wall side to provide.After rib wall support replacement, building in I area's basement of having constructed
After plate (such as: B2 floor plate), the two floor earthwork in adjacent IIth area can be excavated, excavate adjacent area cubic metre of earth in advance, so latter two hole simultaneously into
Row construction operation shortens the overall construction time of foundation pit, reduces " tau-effect " of base pit engineering, and protection periphery is built (structure) and built
Object, the duration is longer, foundation pit deformation is larger, is affected to surrounding enviroment when solving subregion construction foundation pit using conventional construction method
The problems such as.
The technical problem to be solved by the present invention is to what is be achieved through the following technical solutions:
A kind of deep basal pit point hole construction rib wall support changing structure for use, is arranged from from basement bottom board to basement roof absolute altitude
300mm thickness armored concrete support replacement shear wall, between the level of support replacement shear wall and spacer is according to the foundation pit concrete branch in IIth area
It supports beam to determine, support replacement shear wall is constructed together with basement structure, is connect with ground-connecting-wall mid-board using bar planting.
Preferably, in above-mentioned technical proposal, the support replacement shear wall is arranged by basement bottom board to top plate, support replacement shear wall
The foundation pit concrete support beam in IIth area of face.
Preferably, in above-mentioned technical proposal, the width of the support replacement shear wall is 300mm, length 10m, height and underground
Cell structure layer height is identical.
A kind of construction method of deep basal pit point hole construction rib wall support replacement, the construction method be using rib wall support replacement after, apply
In I area's basement of Gong Wan after floor, the two floor earthwork in adjacent IIth area are excavated, excavate adjacent area cubic metre of earth in advance, so latter two is cheated simultaneously
Carry out construction operation.
Preferably, in above-mentioned technical proposal, the construction method is that reservation stage reserves support replacement shear wall in construction of bottom plates
Joint bar is poured in construct together reinforcing bar, template, the concrete of the support replacement shear wall within the scope of this of underground four-layer structure construction stage
It builds, and reserves one layer of support shear wall joint bar, and so on.
Preferably, in above-mentioned technical proposal, the construction method specifically:
(1) the 4th supporting removal of the area I and the construction of underground four-layer structure:
Support replacement rib wall is constructed with structure synchronization, rib wall and bottom plate link position reserved joint bar, and rib wall and dividing wall connect
It connects position and carries out bar planting processing, it is ensured that rib wall is connected firmly with structure；
(2) area I third road supporting removal and F3/B3 structure construction:
Support replacement rib wall is constructed with structure synchronization, and floor bar reinforcement and floor are carried out within the scope of wall two sides and wall end
Additional bar；
People's air defense oral area, wall column, lattice column position are avoided in horizontal layout, it is convenient to construct, also avoid later period support replacement rib
To the damage of permanent structure in wall demolishing process；
(3) area I second supporting removal and the construction of underground two-layer structure
After the completion of the area I B2 plate, the area I continues B1 floor structure construction, and II starts two floor of area soil excavation and Construction of Supporting；To protect
Effective transmitting of II area's axial force of the supports is demonstrate,proved, the rib wall construction of the area I support replacement range is preferentially constructed, and B1 plate is not later than II within the scope of rib wall
Area's second supports to be formed.
(4) area I basement one rib wall support replacement is constructed:
The construction of the area I basement one rib wall support replacement, I area's B1 plate completes area and is more than after 50%, and the range interior main body structure
After B1 board concrete intensity reaches design strength 80%, IIth area can excavate the 3rd floor earthwork and the 3rd support of constructing；
(5) first of the area I supporting removal and basement one structure construction:
Support replacement rib wall reaches design strength within the scope of basement one, after B1 plate is fully completed and reaches design strength, Ith area side
Dismountable 1st support, construction B0 plate, IIth area, which is in, excavates the 3rd floor earthwork and during the 3rd support of constructing；
(6) support replacement rib wall is removed
The area I basement structure starts to remove rib wall after going out ± 0.00, it is contemplated that cutting is taken in the protection to permanent structure
Mode is removed from top to bottom；Rib wall belongs to when support changing structure for use is removed the principle progress for following " layering, subregion "；Rib wall and structural slab
Link position remove after manually repair chipping it is whole after, using epoxy resin cement mortar repair.
Above-mentioned technical proposal of the present invention, has the following beneficial effects:
(1) divide hole can synchronous construction, substantially save the duration: I area's basement of Normal practice Wei Dai in foundation pit point hole is positive and negative out
After zero, II area's foundation pit can be excavated, II area's foundation pit support force needs I area's basement floor of dividing wall side to provide.Using rib wall
After support replacement, in I area's basement of having constructed after floor (such as: B2 floor plate), the two floor earthwork in adjacent IIth area can be excavated, are excavated in advance
Adjacent area cubic metre of earth, so latter two is cheated while carrying out construction operation.
(2) rib wall and structure synchronization are constructed, and be not take up the critical circuits duration: rib wall and structure synchronization carry out, rib wall displacement
Bottom plate reserved joint bar, interval wall displacement carry out bar planting, successively construct with structure, be not take up the critical circuits duration.
(3) power transmission of rib wall is reliable and stable, construction is convenient: rib wall is supported by bottom plate to basement one, entire stress by adjacent area
Pass to rib wall, rib wall passes to each layer beam slab and bottom plate, each common stress of layer structure, and support replacement stress is more stable.Using maturation
Reinforced concrete construction technique, it is easy to operate, securely and reliably.
(4) reduce foundation pit deformation: shortening the overall construction time of foundation pit, reduce " tau-effect " of base pit engineering, protect
Periphery buildings or structures.
Detailed description of the invention
Fig. 1 is a kind of construction process figure of deep basal pit of the invention point hole construction rib wall support replacement.
Fig. 2 is a kind of deep basal pit of the invention point hole construction rib wall support changing structure for use floor map.
Specific embodiment
Specific embodiments of the present invention will be described in detail below, in order to further understand the present invention.
The 300mm thickness armored concrete support replacement shear wall 1 being arranged from from basement bottom board to basement roof absolute altitude, support replacement
Between the level of shear wall and spacer is determined according to the foundation pit concrete support beam in IIth area (with the foundation pit concrete branch in IIth area of face
Support subject to beam), support replacement shear wall is constructed together with basement structure, is connect with ground-connecting-wall mid-board using bar planting.Using rib wall
After support replacement, in I area's basement of having constructed after floor (such as: B2 floor plate), the two floor earthwork in adjacent IIth area can be excavated, are excavated in advance
Adjacent area cubic metre of earth, so latter two is cheated while carrying out construction operation.Construction technology is identical as permanent structure shear wall construction, rib wall power transmission
Reliably.
The horizontal space and spacer of support replacement shear wall 1 are determined according to the foundation pit concrete support beam in II area's foundation pit, IIth area,
It is subject to the foundation pit concrete support beam 2 in IIth area of face, support replacement shear wall is the reinforced concrete shear wall of 300mm thickness.
Concrete construction method includes:
(1) the 4th supporting removal of the area I and underground four-layer structure (wall containing rib) construction
Support replacement rib wall is constructed with structure synchronization, rib wall and bottom plate link position reserved joint bar, and rib wall and dividing wall connect
It connects position and carries out bar planting processing, it is ensured that rib wall is connected firmly with structure.
(2) area I third road supporting removal and F3/B3 structure (wall containing rib) construction
Support replacement rib wall is constructed with structure synchronization, and floor bar reinforcement and floor are carried out within the scope of wall two sides and wall end
Additional bar.
People's air defense oral area, wall column, lattice column position are avoided in horizontal layout, it is convenient to construct, also avoid later period support replacement rib
To the damage of permanent structure in wall demolishing process.
(3) area I second supporting removal and underground two-layer structure (wall containing rib) construction
After the completion of the area I B2 plate, the area I continues B1 floor structure construction, and II starts two floor of area soil excavation and Construction of Supporting.To protect
Effective transmitting of II area's axial force of the supports is demonstrate,proved, the rib wall construction of the area I support replacement range is preferentially constructed, and B1 plate is not later than II within the scope of rib wall
Area's second supports to be formed.
(4) area I basement one rib wall support replacement is constructed
The construction of the area I basement one rib wall support replacement, it is more than that (limited construction is adjacent to mid-board after 50% that I area's B1 plate, which completes area,
The underground structure at place), and after the range interior main body structure B1 board concrete intensity reaches design strength 80%, IIth area can excavate
The 3rd layer of earthwork and the 3rd support of constructing.
(5) first of the area I supporting removal and basement one structure construction
Support replacement rib wall reaches design strength within the scope of basement one, after B1 plate is fully completed and reaches design strength, Ith area side
Dismountable 1st support, construction B0 plate, IIth area, which is in, excavates the 3rd floor earthwork and during the 3rd support of constructing.
(6) support replacement rib wall is removed
The area I basement structure starts to remove rib wall after going out ± 0.00, it is contemplated that cutting is taken in the protection to permanent structure
Mode is removed from top to bottom.Rib wall belongs to support changing structure for use, carries pattern foundation pit supporting structure power, and when dismounting follows the original of " layering, subregion "
Then carry out.Rib wall and structural slab link position manually repaired after removing chipping it is whole after, repaired using epoxy resin cement mortar.
The wall setting method power transmission of this rib is reliable and stable, construction is convenient, point hole can synchronous construction, substantially save the duration, rib wall
It constructs with structure synchronization, is not take up the critical circuits duration, reduce foundation pit and peripheral distortion.Break conventional foundation pit subregion construction item
Purpose can excavate the working condition requirement of II area's foundation pit after I area's basement goes out positive negative zero.After rib wall support replacement, constructed Ith area
In basement after floor (such as: B2 floor plate), the two floor earthwork in adjacent IIth area can be excavated, excavate adjacent area cubic metre of earth in advance, then two
It is a to cheat while carrying out construction operation, shorten the overall construction time of foundation pit, reduce " tau-effect " of base pit engineering, protects periphery
Buildings or structures, the duration is longer, foundation pit deformation is larger, to surrounding enviroment when solving subregion construction foundation pit using conventional construction method
The problems such as being affected.
Although the present invention is disclosed as above with embodiment, so it is not intended to limit the present invention, any those skilled in the art
Member, without departing from the spirit and scope of the present invention, can make a variety of different selections and modification, therefore protection model of the invention
It encloses and is limited by claims and its equivalents.
Claims (6)
1. a kind of deep basal pit according to claim 1 point hole construction rib wall support changing structure for use, which is characterized in that from basement bottom
The 300mm thickness armored concrete support replacement shear wall (1) being arranged at plate to basement roof absolute altitude, between the level of support replacement shear wall and
Spacer determines that support replacement shear wall is constructed together with basement structure according to the foundation pit concrete support beam (2) in IIth area, connects with ground
Wall mid-board is connected using bar planting (3).
2. a kind of deep basal pit according to claim 1 point hole construction rib wall support changing structure for use, which is characterized in that the support replacement is cut
Power wall (1) is arranged by basement bottom board to top plate, the foundation pit concrete support beam in IIth area of support replacement shear wall (1) face.
3. a kind of deep basal pit according to claim 1 point hole construction rib wall support changing structure for use, which is characterized in that the support replacement is cut
The width of power wall (1) is 300mm, length 10m, highly identical as basement structure layer height.
4. a kind of deep basal pit according to claim 1 to 3 point hole construction rib wall support replacement construction method, which is characterized in that
The construction method be using rib wall support replacement after, in I area's basement of construct after floor, the two floor earthwork in adjacent IIth area of excavation,
Adjacent area cubic metre of earth is excavated in advance, and so latter two is cheated while carrying out construction operation.
5. a kind of construction method of deep basal pit according to claim 4 point hole construction rib wall support replacement, which is characterized in that described
Construction method be in construction of bottom plates reservation stage reserve support replacement shear wall (1) joint bar, the underground four-layer structure construction stage together
The reinforcing bar for the support replacement shear wall (1) constructed within the scope of this, template, concreting, and the support shear wall (1) for reserving one layer is inserted
Muscle, and so on.
6. a kind of construction method of deep basal pit according to claim 4 point hole construction rib wall support replacement, which is characterized in that described
Construction method specifically:
(1) the 4th supporting removal of the area I and the construction of underground four-layer structure:
Support replacement rib wall is constructed with structure synchronization, rib wall and bottom plate link position reserved joint bar, rib wall and dividing wall connection position
It sets and carries out bar planting processing, it is ensured that rib wall is connected firmly with structure；
(2) area I third road supporting removal and F3/B3 structure construction:
Support replacement rib wall is constructed with structure synchronization, and floor bar is carried out within the scope of wall two sides and wall end and reinforces adding with floor
Reinforcing bar；
People's air defense oral area, wall column, lattice column position are avoided in horizontal layout, it is convenient to construct, also avoid later period support replacement rib wall from tearing open
Except in the process to the damage of permanent structure；
(3) area I second supporting removal and the construction of underground two-layer structure
After the completion of the area I B2 plate, the area I continues B1 floor structure construction, and II starts two floor of area soil excavation and Construction of Supporting；To guarantee II
The rib wall construction of effective transmitting of area's axial force of the supports, the area I support replacement range is preferentially constructed, and B1 plate is not later than IIth area within the scope of rib wall
Two support to be formed.
(4) area I basement one rib wall support replacement is constructed:
The construction of the area I basement one rib wall support replacement, I area's B1 plate completes area and is more than after 50%, and the range interior main body structure B1 plate
After concrete strength reaches design strength 80%, IIth area can excavate the 3rd floor earthwork and the 3rd support of constructing；
(5) first of the area I supporting removal and basement one structure construction:
Support replacement rib wall reaches design strength within the scope of basement one, and after B1 plate is fully completed and reaches design strength, Ith area can be torn open
Except the 1st support, construction B0 plate, IIth area, which is in, excavates the 3rd floor earthwork and during the 3rd support of constructing；
(6) support replacement rib wall is removed
The area I basement structure starts to remove rib wall after going out ± 0.00, it is contemplated that cutting mode is taken in the protection to permanent structure
It removes from top to bottom；Rib wall belongs to when support changing structure for use is removed the principle progress for following " layering, subregion "；Rib wall is connect with structural slab
Position remove after manually repair chipping it is whole after, using epoxy resin cement mortar repair.
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| CN201910042852.XA CN109723085B (en) | 2019-01-17 | 2019-01-17 | Deep foundation pit division construction rib wall support replacing structure and construction method thereof |
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| CN201910042852.XA CN109723085B (en) | 2019-01-17 | 2019-01-17 | Deep foundation pit division construction rib wall support replacing structure and construction method thereof |
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| CN110409454A (en) * | 2019-08-07 | 2019-11-05 | 上海建工二建集团有限公司 | Open foundation pit block construction system and method |
| CN111236255A (en) * | 2020-03-06 | 2020-06-05 | 华东建筑设计研究院有限公司 | Support structure capable of realizing cross implementation of adjacent foundation pits and application construction method thereof |
| CN113550326A (en) * | 2021-08-12 | 2021-10-26 | 中建八局第二建设有限公司 | Foundation pit support removing and basement structure and construction method thereof |
| CN114673162A (en) * | 2022-04-15 | 2022-06-28 | 中铁上海设计院集团有限公司 | Underground vehicle base foundation pit construction method |
| CN115030186A (en) * | 2022-07-15 | 2022-09-09 | 中建桥梁有限公司 | Foundation pit supporting construction method for multi-layer basement requiring dismantling of existing foundation pit diaphragm wall |
| CN115142431A (en) * | 2022-06-23 | 2022-10-04 | 中国建筑第八工程局有限公司 | Construction method for removing inner supports of foundation pits at two sides with zero distance from operating subway |
| CN115142417A (en) * | 2022-08-24 | 2022-10-04 | 广州市岩土勘测设计有限公司 | Rib wall dismantling construction method of T-shaped underground continuous wall support system |
| CN115387344A (en) * | 2022-08-19 | 2022-11-25 | 中建三局第三建设工程有限责任公司 | Double-foundation-pit double-working-condition rapid construction method |
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| CN110409454A (en) * | 2019-08-07 | 2019-11-05 | 上海建工二建集团有限公司 | Open foundation pit block construction system and method |
| CN111236255A (en) * | 2020-03-06 | 2020-06-05 | 华东建筑设计研究院有限公司 | Support structure capable of realizing cross implementation of adjacent foundation pits and application construction method thereof |
| CN113550326A (en) * | 2021-08-12 | 2021-10-26 | 中建八局第二建设有限公司 | Foundation pit support removing and basement structure and construction method thereof |
| CN114673162A (en) * | 2022-04-15 | 2022-06-28 | 中铁上海设计院集团有限公司 | Underground vehicle base foundation pit construction method |
| CN114673162B (en) * | 2022-04-15 | 2023-09-22 | 中铁上海设计院集团有限公司 | Underground vehicle foundation pit construction method |
| CN115142431A (en) * | 2022-06-23 | 2022-10-04 | 中国建筑第八工程局有限公司 | Construction method for removing inner supports of foundation pits at two sides with zero distance from operating subway |
| CN115142431B (en) * | 2022-06-23 | 2024-03-12 | 中国建筑第八工程局有限公司 | Construction method for dismantling supports in foundation pits on two sides at zero distance from operation subway |
| CN115030186A (en) * | 2022-07-15 | 2022-09-09 | 中建桥梁有限公司 | Foundation pit supporting construction method for multi-layer basement requiring dismantling of existing foundation pit diaphragm wall |
| CN115030186B (en) * | 2022-07-15 | 2023-04-25 | 中建桥梁有限公司 | Foundation pit support construction method for removing existing foundation pit underground continuous wall of multilayer basement |
| CN115387344B (en) * | 2022-08-19 | 2023-09-12 | 中建三局第三建设工程有限责任公司 | Double-foundation pit double-working-condition rapid construction method |
| CN115387344A (en) * | 2022-08-19 | 2022-11-25 | 中建三局第三建设工程有限责任公司 | Double-foundation-pit double-working-condition rapid construction method |
| WO2024037586A1 (en) * | 2022-08-19 | 2024-02-22 | 中建三局集团(浙江)有限公司 | Double-foundation-pit double-working-condition construction method |
| CN115142417B (en) * | 2022-08-24 | 2024-03-08 | 广州市岩土勘测设计有限公司 | Construction method for dismantling rib wall of T-shaped underground diaphragm wall supporting system |
| CN115142417A (en) * | 2022-08-24 | 2022-10-04 | 广州市岩土勘测设计有限公司 | Rib wall dismantling construction method of T-shaped underground continuous wall support system |
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