CN108316314A - A kind of inner supporting structure for solving to cheat biasing problem in depth foundation pit - Google Patents
A kind of inner supporting structure for solving to cheat biasing problem in depth foundation pit Download PDFInfo
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- CN108316314A CN108316314A CN201810205304.XA CN201810205304A CN108316314A CN 108316314 A CN108316314 A CN 108316314A CN 201810205304 A CN201810205304 A CN 201810205304A CN 108316314 A CN108316314 A CN 108316314A
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- pit
- deep basal
- inner support
- foundation
- basal 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
Abstract
The present invention relates to construction engineering technical fields, in particular to a kind of inner supporting structure for solving to cheat biasing problem in depth foundation pit.Include the diaphram wall positioned at deep basal pit and shallow foundation pit edge positions and the partition wall positioned at deep basal pit and shallow foundation hole intersection, it is characterised in that：Further include the supporting beam positioned at shallow bottom of foundation ditch and the middle part inner support in deep basal pit；The supporting beam is the reinforced concrete structure being layed in shallow foundation hole below architecture basics, and supporting beam is supported in the horizontal direction between the diaphram wall and partition wall in shallow foundation hole；The middle part inner support is the reinforced concrete structure being supported in the horizontal direction between the diaphram wall of deep basal pit and partition wall, and middle part inner support maintains an equal level with supporting beam and the partition wall both sides that are placed in.The constructing structure of the present invention is simple, construction method efficiently, it is easy, while improving foundation pit construction and being put into stability, reduce the cost of inner supporting structure, there is great promotional value.
Description
Technical field
The present invention relates to construction engineering technical fields, solve to cheat in biasing problem in depth foundation pit in particular to a kind of
Support construction.
Background technology
With the development of urbanization, each city is according to features such as Urban Spatial Morphology, travellings according to " zero distance is changed
Multiply " requirement, Large Underground comprehensive transportation hub engineering comes into being, state's iron underground go out subway concourse, the mating subsidence observation of municipal administration,
Closely linking, the spatially spatially formula interaction of iron subway concourse, builds sequential and there is intersection.
At present majority transit centres spatially underground negative one, two layers go out station hall layer, portion for municipal conveyance system, state's iron
Divide F3/B3 for subway station hall layer, the excavation of deep basal pit involved in process of construction, such deep basal pit mostly uses stake (wall)+interior branch
Support body system.Under regular situation, to reduce deep pit monitor risk, mostly uses shallow principle after first depth and carry out supporting excavation；Practical mistake
Cheng Zhong, because project owner, the completion time of project, use demand difference, the principle of depth or synchronous construction carries out after need to being adjusted to first shallow
Pattern foundation pit supporting structure with excavate, be based on this, deep, shallow area's foundation pit enclosure structure in the entire base pit engineering in part caused to bear horizontal force generation
Biasing problem.Therefore it in depth foundation pit, needs to solve building enclosure biasing problem in synchronous digging process.
It needs to add in some in foundation pit in most cases using first shallow rear deep foundation ditch excavation method in the prior art
Support construction, such as entitled " a kind of foundation pit supporting construction and method for first shallow rear depth " of Patent No. " CN104746520A "
Chinese invention patent, the foundation pit supporting construction of the patent introduction in shallow foundation hole by being additionally arranged at the bottom of support bracket, then in ox
Horizontal inner supporting structure is added between leg and deep basal pit, by supporting bracket to be solved in depth foundation pit with horizontal inner supporting structure
Biasing problem is cheated, this mode can be good at carrying out stress transmission, but need to add extra support ox in shallow foundation hole
Leg structure actually increases entire difficulty of construction, improves construction cost, reduces construction efficiency, it is difficult to carry out a wide range of
Popularization and application.
Invention content
Present invention aim to the depth internal support of foundation pit knots for the prior art for solving to mention in above-mentioned background technology
Structure has that difficulty of construction is big, efficiency is low, of high cost, provides a kind of interior branch for solving to cheat biasing problem in depth foundation pit
Support structure.
The technical scheme is that：A kind of inner supporting structure for solving to cheat biasing problem in depth foundation pit, including position
Cheat in the diaphram wall of deep basal pit and shallow foundation pit edge positions and positioned at deep basal pit and shallow foundation the partition wall of intersection, feature
It is：Further include the supporting beam positioned at shallow bottom of foundation ditch and the middle part inner support in deep basal pit；The supporting beam is paving
The reinforced concrete structure below interior architecture basics is cheated set on shallow foundation, supporting beam is arranged in the horizontal direction in the underground that shallow foundation is cheated
Between diaphragm wall and partition wall；The middle part inner support be supported in the horizontal direction deep basal pit diaphram wall and partition wall it
Between reinforced concrete structure, middle part inner support and supporting beam maintain an equal level and the partition wall both sides that are placed in.
The supporting beam includes crossbeam arrange along horizontal cross and along the longitudinally arranged longeron of level；Institute
The interspersed connection of crossbeam and longeron stated forms the reticular supporting structure being supported between the diaphram wall and partition wall in shallow foundation hole.
The further crossbeam and longeron junction arranged beneath have sub-merged pier；The sub-merged pier be supported in crossbeam and
The Reinforced Concrete Pier Column of longeron junction, sub-merged pier lower end are vertically arranged in shallow Foundation Pit bottom.
The further partition wall upper end has been poured along horizontal longitudinally arranged intermediate beam；The intermediate beam and cross
Beam, middle part inner support maintain an equal level；The crossbeam, middle part inner support are fixedly connected with intermediate beam.
It is provided with the waist rail to maintain an equal level with intermediate beam in the further shallow foundation hole；The waist rail is to be fixed on shallow foundation
The reinforced concrete structure on diaphram wall inner wall in hole, waist rail are fixedly connected to form cyclic structure with intermediate beam；It is described
Crossbeam and longeron be supported between waist rail and intermediate beam.
The further diaphram wall upper end is disposed with Guan Liang；Arrangement in the annulus that the Guan Liang surrounds
There is top inner support 0；The top inner support 0 is the reinforced concrete structure being supported in the horizontal direction in cyclic annular Guan Liang,
Vertically arranged for interval, top inner support 0 pass through vertical vertical in deep basal pit and shallow foundation hole top inner support 0 with middle part inner support
Column is supported in deep basal pit and shallow foundation hole top.
The further supporting beam and 2~10cm of architecture basics interval in shallow foundation hole.
A kind of depth foundation ditch construction method, it is characterised in that：Include the following steps：1), periphery is cheated along deep basal pit and shallow foundation
Construction diaphram wall and partition wall, column of constructing among deep basal pit and shallow foundation hole；
2), at excavation of foundation pit region excavation pit to top inner support bottom surface, Guan Liang of constructing at the top of diaphram wall
And retaining wall, top inner support is poured in foundation pit, it is made to be fixedly connected with Guan Liang and column；
3), continue to be excavated to downwards at the bottom surface of shallow foundation hole, waist rail of constructing on the diaphram wall inner wall in shallow foundation hole, in shallow
Construction Support beam in foundation pit pours intermediate beam in partition wall upper end, in pouring middle part inner support in deep basal pit, it is made to be held with supporting beam
It is flat；
4), in construction shallow foundation hole architecture basics and side wall on the crossbeam and longeron in shallow foundation hole, deep basal pit region is continued
It is excavated at deep basal pit bottom, bottom inner support of constructing between partition wall and the diaphram wall of deep basal pit, in deep basal pit bottom surface
Place's construction deep basal pit architecture basics and side wall；
5) bottom inner support, is removed, the deep basal pit side wall that continues to construct in deep basal pit is removed to middle part inner support in middle part
Support at deep basal pit side wall to top inner support of constructing, removes top inner support, carries out deep basal pit and shallow foundation hole top is bound place
Reason.
In the further step 3, the method for Construction Support beam is in shallow foundation is cheated：It is excavated at the bottom surface of shallow foundation hole
Groove, sub-merged pier of constructing make to prop up in crossbeam and the middle part in deep basal pit in pouring the longitudinal and cross beam being criss-cross arranged on sub-merged pier
It props up flat.
In the further step 1, the method for construction column is among deep basal pit and shallow foundation hole：In deep basal pit and
Shallow foundation carries out drilling construction column pile foundation in hole, and column is installed on the basis of stand column pile.
Advantages of the present invention has：1, the present invention is propped up by being arranged in middle part positioned opposite between deep basal pit and shallow foundation hole
Support and supporting beam, effectively safeguard foundation pit structure, are designed directly against shallow cut area bias resistance to compression deficiency, stress
It is clear, keep two foundation pits with good stability；
2, support beam structure of the invention is simple, the arrangement for formula of avoiding the peak hour with foundation beam, neither influences shallow foundation and cheats architecture basics
Construction, and can be as the force transferring structure of middle part inner support；
3, deep basal pit of the invention and shallow foundation hole form of construction work are simple, efficient, the support beam body under architecture basics of constructing
System need not remove, and can directly be embedded in underground, improve part of the foundation foundation bearing capacity.
The constructing structure of the present invention is simple, and construction method is efficient, easy, while improving base pit stability, reduces
Removing temporary supports, optimize construction procedure, have great promotional value.
Description of the drawings
Fig. 1：The present embodiment deep basal pit and shallow foundation cheat construction of diaphragm wall structural schematic diagram；
Fig. 2：The present embodiment deep basal pit and shallow foundation hole top inner support constructing structure schematic diagram；
Fig. 3：The present embodiment deep basal pit and shallow foundation hole supporting beam and middle part inner supporting structure schematic diagram；
Fig. 4：The present embodiment shallow foundation cheats architecture basics constructing structure schematic diagram；
Fig. 5：The present embodiment deep basal pit bottom inner support constructing structure schematic diagram；
Fig. 6：The present embodiment deep basal pit bottom bracing demolition constructing structure schematic diagram；
Fig. 7：Bracing demolition constructing structure schematic diagram in the middle part of the present embodiment deep basal pit；
Fig. 8：The present embodiment deep basal pit and shallow foundation hole supporting beam and middle part inner support vertical view；
Wherein：1-diaphram wall；2-partition walls；3-middle part inner supports；4-crossbeams；5-longerons；6-sub-merged piers；7—
Intermediate beam；8-waist rails；9-Guan Liangs；10-top inner supports；11-columns；12-bottom inner supports；13-column pile foundations.
Specific implementation mode
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Such as Fig. 1~8, a kind of inner supporting structure for solving to cheat biasing problem in depth foundation pit, the present embodiment passes through in depth
Foundation pit and shallow bottom of foundation ditch corresponding position arrangement middle part inner support 3 pass through middle part inner support in deep basal pit and shallow bottom of foundation ditch
Supporting beam maintains an equal level, and carries out stress conduction, forms good support construction, has both avoided after adding one of support in the middle part of shallow foundation hole
The problem of phase need to remove, and solve the problems, such as depth Foundation Pit bias.
The inner supporting structure of the present embodiment includes positioned at diaphram wall 1 and the position of deep basal pit and shallow foundation pit edge positions
The partition wall 2 of intersection is cheated in deep basal pit and shallow foundation, the space that diaphram wall 1 surrounds is divided into two spaces by partition wall 2, is formed
Deep basal pit and shallow foundation hole.
The inner supporting structure of the present embodiment include three, as shown in Fig. 2~7, from top to bottom be respectively top inner support 10,
Middle part inner support 3 and bottom inner support 12, wherein top inner support 10 is to be supported in deep basal pit and shallow foundation hole top in the horizontal direction
Reinforced concrete structure in portion's Guan Liang 9, Guan Liang 9 are to be fixed on the reinforced concrete beam structure of 1 upper end of diaphram wall.This
Embodiment is disposed with more root posts 11 in deep basal pit and shallow foundation hole, and the lower end of column 11 is disposed with by way of drilling construction
Column pile foundation 13, column 11 are fixed in column pile foundation 13, are used to support top inner support 10.
The present embodiment has been poured in 2 upper end of partition wall along horizontal longitudinally arranged intermediate beam 7, middle part inner support 3 I pour in
Reinforced concrete structure between deep basal pit diaphram wall 1 and intermediate beam 7.Wherein intermediate beam 7 cheats diaphram wall 1 with shallow foundation
Between poured supporting beam.As shown in figure 8, the supporting beam of the present embodiment includes that (transverse direction of the present embodiment refers to Fig. 8 along horizontal cross
Upper and lower directions, longitudinally refer to the left and right directions of Fig. 8, vertical direction refers to the direction of the vertical drawing in Fig. 8) arrangement 4 He of crossbeam
Along horizontal longitudinally arranged longeron 5, crossbeam 4 and the interspersed connection of longeron 5 form the diaphram wall 1 and partition wall for being supported in shallow foundation hole
Reticular supporting structure between 2.In order to form good support construction, the crossbeam 4 and middle part inner support 3 of the present embodiment maintain an equal level,
The two is placed in the both sides of intermediate beam 7, forms horizontal support structure.
It is the steel for being supported in 5 junction of crossbeam 4 and longeron that crossbeam 4 and 5 junction arranged beneath of longeron, which have sub-merged pier 6, sub-merged pier 6,
Reinforced concrete pier stud.The waist rail 8 to maintain an equal level with intermediate beam 7 is provided in shallow foundation hole, waist rail 8 is that the underground being fixed in shallow foundation hole connects
Reinforced concrete structure on 1 inner wall of continuous wall, waist rail 8 are fixedly connected to form cyclic structure, crossbeam 4 and longeron 5 with intermediate beam 7
It supports between waist rail 8 and intermediate beam 7.
The supporting beam that crossbeam 4 and longeron 5 are formed can both be used as horizontal force transferring structure, can also be used as shallow foundation pit structure base
The bearing structure of plinth, the crossbeam 4 of the present embodiment is located at the lower section of shallow foundation hole architecture basics, between the two every 2~10cm.
As shown in figure 5, bottom inner support 12 is located at the lower section of middle part inner support 3, for individually carrying out supporting to deep basal pit,
Top inner support 12 is the supporting construction being supported in the horizontal direction between deep basal pit diaphram wall 1 and partition wall 2.
In fact, being not limited to three inner supporting structures, can be arranged between top inner support 10 and middle part inner support 3
Multiple tracks inner supporting structure can also arrange multiple tracks inner supporting structure, as long as energy between bottom inner support 12 and middle part inner support 3
Enough meet supporting requirement.
Specific construction includes the following steps：1, smooth to construction site progress, periphery unwrapping wire is cheated along deep basal pit and shallow foundation, is applied
Work diaphram wall 1 and partition wall 2, deep basal pit and shallow foundation hole among construct column 11, as shown in Figure 1, current embodiment require that
Deep basal pit and shallow foundation hole periphery form building enclosure, and building enclosure is made of cast-in-situ bored pile, rotary churning pile and diaphram wall 1,
Prior to construction column pile foundation 13 in deep basal pit and shallow foundation hole when construction column 11, column of then constructing in column pile foundation 13
11；
2, at excavation of foundation pit region excavation pit to 10 bottom surface of top inner support, in 1 top construction hat of diaphram wall
Beam 9 and retaining wall pour top inner support 10, as shown in Fig. 2, it is made to be fixedly connected with Guan Liang 9 and column 11 in foundation pit；
3, continue to be excavated to downwards at the bottom surface of shallow foundation hole, waist rail 8 of constructing on 1 inner wall of diaphram wall in shallow foundation hole, in
Construction Support beam in shallow foundation hole, groove is excavated when supporting beam is constructed at the bottom surface of shallow foundation hole, and sub-merged pier 6 of constructing is poured on sub-merged pier 6
The longeron 5 and crossbeam 4 being criss-cross arranged pour intermediate beam 7 in 2 upper end of partition wall, the inner support 3 in the middle part of being poured in deep basal pit,
As shown in figure 3, it is made to maintain an equal level with supporting beam；
4, in shallow foundation hole crossbeam 4 and longeron 5 on construction shallow foundation hole architecture basics and side wall, as shown in figure 4, to deep base
Hole region continues to be excavated at deep basal pit bottom, bottom inner support of constructing between partition wall 2 and the diaphram wall 1 of deep basal pit
12, as shown in figure 5, construct at deep basal pit bottom surface deep basal pit architecture basics and side wall；
5, bottom inner support 12 is removed, steel pipe stull is installed, as shown in fig. 6, continuing deep basal pit side of constructing in deep basal pit
Wall removes middle part inner support 3 to middle part inner support 3, as shown in fig. 7, at construction deep basal pit side wall to top inner support 10, removes
Top inner support 10 carries out processing of binding at the top of deep basal pit and shallow foundation hole.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (10)
1. a kind of inner supporting structure for solving to cheat biasing problem in depth foundation pit, including it is located at deep basal pit and shallow foundation pit edge position
The diaphram wall (1) set and the partition wall (2) positioned at deep basal pit and shallow foundation hole intersection, it is characterised in that：Further include being located at
The supporting beam of shallow bottom of foundation ditch and the middle part inner support (3) in deep basal pit；The supporting beam is to be layed in shallow foundation hole
Reinforced concrete structure below architecture basics, supporting beam be arranged in the horizontal direction the diaphram wall (1) cheated in shallow foundation and
Between partition wall (2)；The middle part inner support (3) is to be supported in the diaphram wall (1) and partition wall of deep basal pit in the horizontal direction
(2) reinforced concrete structure between, middle part inner support (3) maintains an equal level with supporting beam and the partition wall that is placed in (2) both sides.
2. a kind of inner supporting structure for solving to cheat biasing problem in depth foundation pit as described in claim 1, it is characterised in that：
The supporting beam includes the crossbeam (4) arranged along horizontal cross and along horizontal longitudinally arranged longeron (5)；The crossbeam
(4) and the interspersed connection of longeron (5) forms the mesh-supported knot being supported between the diaphram wall (1) and partition wall (2) in shallow foundation hole
Structure.
3. a kind of inner supporting structure for solving to cheat biasing problem in depth foundation pit as claimed in claim 2, it is characterised in that：
The crossbeam (4) and longeron (5) junction arranged beneath has sub-merged pier (6)；The sub-merged pier (6) be supported in crossbeam (4) and
The Reinforced Concrete Pier Column of longeron (5) junction, sub-merged pier (6) lower end are vertically arranged in shallow Foundation Pit bottom.
4. a kind of inner supporting structure for solving to cheat biasing problem in depth foundation pit as claimed in claim 2, it is characterised in that：
Described partition wall (2) upper end has been poured along horizontal longitudinally arranged intermediate beam (7)；The intermediate beam (7) and crossbeam (4), in
Portion's inner support (3) maintains an equal level；The crossbeam (4), middle part inner support (3) are fixedly connected with intermediate beam (7).
5. a kind of inner supporting structure for solving to cheat biasing problem in depth foundation pit as described in claim 1, it is characterised in that：
It is provided with the waist rail (8) to maintain an equal level with intermediate beam (7) in the shallow foundation hole；The waist rail (8) is to be fixed in shallow foundation hole
Reinforced concrete structure on diaphram wall (1) inner wall, waist rail (8) are fixedly connected to form cyclic structure with intermediate beam (7)；Institute
The crossbeam (4) stated and longeron (5) are supported between waist rail (8) and intermediate beam (7).
6. a kind of inner supporting structure for solving to cheat biasing problem in depth foundation pit as described in claim 1, it is characterised in that：
Described diaphram wall (1) upper end is disposed with Guan Liang (9)；Top is disposed in the annulus that the Guan Liang (9) surrounds
Inner support (10)；The top inner support (10) is the armored concrete knot being supported in the horizontal direction in cyclic annular Guan Liang (9)
Structure, vertically arranged for interval, top inner support (10) pass through deep basal pit and shallow foundation to top inner support (10) with middle part inner support (3)
Vertical upright column (11) in hole is supported in deep basal pit and shallow foundation hole top.
7. a kind of inner supporting structure for solving to cheat biasing problem in depth foundation pit as described in claim 1, it is characterised in that：
The supporting beam and 2~10cm of architecture basics interval in shallow foundation hole.
8. a kind of depth foundation ditch construction method, it is characterised in that：Include the following steps：1) it, is applied along deep basal pit and shallow foundation hole periphery
Work diaphram wall (1) and partition wall (2), the construction column (11) among deep basal pit and shallow foundation hole；
2), at excavation of foundation pit region excavation pit to top inner support (10) bottom surface, the construction hat at the top of diaphram wall (1)
Beam (9) and retaining wall pour top inner support (10) in foundation pit, it are made to be fixedly connected with Guan Liang (9) and column (11)；
3), continue to be excavated to downwards at the bottom surface of shallow foundation hole, the construction waist rail (8) on diaphram wall (1) inner wall in shallow foundation hole, in
Construction Support beam in shallow foundation hole, intermediate beam (7) is poured in partition wall (2) upper end, in pouring middle part inner support (3) in deep basal pit, is made
It maintains an equal level with supporting beam；
4), in shallow foundation hole crossbeam (4) and longeron (5) on construction shallow foundation cheat architecture basics and side wall, to deep basal pit region after
It is continuous to be excavated at deep basal pit bottom, bottom inner support (12) of constructing between partition wall (2) and the diaphram wall (1) of deep basal pit,
Construction deep basal pit architecture basics and side wall at deep basal pit bottom surface；
5) bottom inner support (12), is removed, the deep basal pit side wall that continues to construct in deep basal pit is to middle part inner support (3), in dismounting
Portion's inner support (3), construct deep basal pit side wall to top inner support (10) at, remove top inner support (10), carry out deep basal pit and
It binds processing at shallow foundation hole top.
9. a kind of depth foundation ditch construction method as claimed in claim 8, it is characterised in that：In the step 3, cheated in shallow foundation
The method of interior Construction Support beam is：Groove is excavated at the bottom surface of shallow foundation hole, construction sub-merged pier (6) is handed in length and breadth in being poured on sub-merged pier (6)
The longeron (5) and crossbeam (4) of mistake arrangement, make crossbeam (4) maintain an equal level with the middle part inner support (3) in deep basal pit.
10. a kind of depth foundation ditch construction method as claimed in claim 8, it is characterised in that：In the step 1, in deep base
The method of construction column (11) is among hole and shallow foundation hole：Drilling construction column pile foundation is carried out in deep basal pit and shallow foundation hole
(13), in installation column (11) in column pile foundation (13).
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| CN201810205304.XA CN108316314A (en) | 2018-03-13 | 2018-03-13 | A kind of inner supporting structure for solving to cheat biasing problem in depth foundation pit |
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| CN114016513A (en) * | 2021-10-26 | 2022-02-08 | 南京林业大学 | Complex foundation pit group supporting system and time-sequence-sharing excavation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109610466A (en) * | 2019-01-31 | 2019-04-12 | 长江勘测规划设计研究有限责任公司 | The asynchronous construction method of the built irregular deep basal pit in subway station two sides and structure |
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| CN112813983A (en) * | 2020-12-31 | 2021-05-18 | 长江勘测规划设计研究有限责任公司 | Cantilever beam-column system implemented synchronously with pit depth in pit and construction method |
| CN112813983B (en) * | 2020-12-31 | 2022-07-22 | 长江勘测规划设计研究有限责任公司 | Cantilever beam-column system implemented synchronously with pit depth in pit and construction method |
| CN114016513A (en) * | 2021-10-26 | 2022-02-08 | 南京林业大学 | Complex foundation pit group supporting system and time-sequence-sharing excavation method |
| CN114016513B (en) * | 2021-10-26 | 2023-03-07 | 南京林业大学 | Time-sequence-sharing excavation method of complex foundation pit group supporting system |
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