CN203403422U - Long-span reinforced concrete inner support structure of rectangular deep foundation pit - Google Patents

Long-span reinforced concrete inner support structure of rectangular deep foundation pit Download PDF

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Publication number
CN203403422U
CN203403422U CN201320323980.XU CN201320323980U CN203403422U CN 203403422 U CN203403422 U CN 203403422U CN 201320323980 U CN201320323980 U CN 201320323980U CN 203403422 U CN203403422 U CN 203403422U
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CN
China
Prior art keywords
foundation ditch
support
supporting
steel
crossbeam
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CN201320323980.XU
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Chinese (zh)
Inventor
冯颖
伍继
莫树攀
冯锦华
李书文
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广西建工集团第五建筑工程有限责任公司
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Priority to CN201320323980.XU priority Critical patent/CN203403422U/en
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Publication of CN203403422U publication Critical patent/CN203403422U/en

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Abstract

The utility model discloses a long-span reinforced concrete inner support structure of a rectangular deep foundation pit. The structure comprises a foundation pit edge breast wall retaining structure, a plurality of layers of inner support three-dimensional supporting structures with steel structure support columns, and a top beam, wherein each inner support three-dimensional supporting structure comprises a foundation pit corner part structure, a foundation pit middle part symmetrical and opposite support structure, and longitudinal beams; each foundation pit middle part symmetrical and opposite support structure comprises a cross beam and two small inclined struts positioned at two ends of the cross beam; the longitudinal beams are beams which are parallel to long edges of the foundation pit and are positioned at the middle part of the foundation pit; the steel structure support columns directly reach below the bottom of the foundation pit; the bottoms of the steel structure support columns are anchored by poured concrete; ring beams are arranged at parts where the longitudinal beams, the cross beams and the steel structure support columns at the middle part of the foundation pit are intersected; a support waist beam is arranged at a connection part between the inner support three-dimensional supporting structure and the middle part of the foundation pit edge breast wall retaining structure; and the cross beams, the longitudinal beams, the ring beams and the waist beam of the inner support three-dimensional supporting structure are reinforced concrete or combined type large-scale steel frame structures. The inner support structure is simple and visual in design, convenient in construction, large in supporting span, and significant in supporting effect.

Description

Rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure
Technical field
The utility model relates to the large-scale deep foundation ditch Comprehensive Bracing Technique of a kind of foundation ditch Comprehensive Bracing Technique, particularly periphery narrow field, soft foundation.
Background technology
Along with economy develops rapidly, building height constantly increases, and engineering also improves the requirement of embedded depth of foundation and space availability ratio thereupon; And can run into basement buried depth and be greater than 20 meters; Muddy Bottoms deep foundation ditch; The problems such as periphery adjacent structure, underground utilities, road.Original plate brad supporting, anchor pole or combined bolting and shotcrete, metal sheet pile the supporting even single support form such as diaphragm wall more and more can not adapt to the demand of construction, are difficult to arrive level in foundation ditch, vertical bidirectional stress balance.
The utility model patent that notice of authorization number is " deep big foundation pit base angle brace supporting and protection structure " for CN202718129U, denomination of invention discloses a kind ofly " comprises waling; four corners of waling are respectively equipped with a plurality of angle braces; the crossbeam with angle brace handing-over is set between the angle brace of adjacent corner in waling; connecting rod is set between angle brace and between crossbeam and waling, and angle brace, connecting rod, crossbeam and waling are connected to form trussed construction." deep big foundation pit base angle brace supporting and protection structure, to solve the problem of existing angle brace and waling junction insufficient rigidity, and can remove separately, just can be on the basis of safety economy, construction is gained time and space.But this supporting and protection structure has also only solved the support problem on four limits, the support at large for area, foundation depth is dark " deep big foundation pit " middle part does not have, and can't meet construction needs; Also the problem of level, vertical bidirectional stress balance in unresolved foundation ditch.
Summary of the invention
The purpose of this utility model is to provide a kind of rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure, and the support form in solution prior art in deep foundation pit support is single, is difficult to arrive the problem of level in foundation ditch, vertical bidirectional stress balance.
The technical scheme addressing the above problem is: a kind of rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure, comprise foundation ditch limit retaining wall soil-baffling structure, comprise the three-dimensional supporting and protection structure of inner support and the Guan Liang of steel structure support column, described Guan Liang is the collar tie beam of the three-dimensional supporting and protection structure of inner support and junction, retaining wall soil-baffling structure top, foundation ditch limit, it is characterized in that: the three-dimensional supporting and protection structure of described inner support has n layer, every one deck includes foundation ditch corner structure, foundation ditch middle part is symmetrical to support structure and longeron; Described foundation ditch corner structure comprises large diagonal brace and the bight stable support that is positioned at foundation ditch corner, the symmetrical two little diagonal braces that support structure is comprised crossbeam and is positioned at crossbeam two ends in described foundation ditch middle part, described crossbeam is to be positioned at the beam that foundation ditch middle part is parallel to foundation ditch minor face, crossbeam two ends are fixedly connected with foundation ditch limit retaining wall soil-baffling structure, at crossbeam two ends, have respectively the two little diagonal braces that are symmetrically located at crossbeam both sides, this two little diagonal braces one end is fixedly connected with crossbeam, the other end is fixedly connected with foundation ditch limit retaining wall soil-baffling structure; Described longeron is the beam that foundation ditch middle part is parallel to the long limit of foundation ditch, and described steel structure support column is below through foundation ditch bottom, at the bottom of post, is the steel structure support column of concrete perfusion anchoring; In foundation ditch waist longeron, crossbeam and steel structure support column three intersection, have ring beam, said n be more than or equal to 1 be less than 30 between arbitrary integer.
Its further technical scheme is: on the large diagonal brace of described foundation ditch corner structure, have triangle stable support or orthoscopic stable support, described triangle stable support summit is in foundation ditch sideline or the formed 0 ° of angular bisector PP of sideline extended line and time intersection point of the outer large diagonal brace of second, and its both sides radiation end large diagonal brace together with outermost is crossing; One end of described orthoscopic stable support is in foundation ditch sideline or the formed 0 ° of angular bisector of sideline extended line and time intersection point of the outer large diagonal brace of second, and its other end large diagonal brace together with outermost is crossing.
Described ring beam has two kinds, and a kind of has been the reinforcing bar of interim booster action, and another kind is the enhancing structure simultaneously retaining with steel structure support column, and this enhancing structure is annular or ring-type polygon.
In the three-dimensional supporting and protection structure of inner support and junction, foundation ditch limit retaining wall soil-baffling structure middle part, also have support wale, this support wale is connected with crossbeam and foundation ditch limit retaining wall soil-baffling structure simultaneously.
Its further technical scheme be: crossbeam, longeron, ring beam and the waist rail of the three-dimensional supporting and protection structure of described inner support are reinforced concrete inner support structure.
Its further technical scheme or: crossbeam, longeron, ring beam and the waist rail of the three-dimensional supporting and protection structure of described inner support is that combined large steel frame construction or rigidity reach the frame construction that the material of foundation ditch force request is made into.
Its more further technical scheme or: when foundation ditch length is not more than width, also can be without longeron.
Owing to adopting said structure, a kind of rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure of the utility model has following beneficial effect:
1. simplicity of design, directly perceived, easy construction, is reduced to conventional reinforced concrete construction by complicated pattern foundation pit supporting structure.
2. pair dark, large pattern foundation pit supporting structure effect is remarkable: deep foundation ditch is because the large feature of its cutting depth, cause foundation ditch periphery earthwork lateral pressure also larger, and the rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure of the utility model by the stressed question marks of pattern foundation pit supporting structure than the stressed problem of building body; The Force principle of the rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure of the utility model is as follows:
1. the level that inner support is born is to power: soil pressure passes to foundation ditch limit retaining wall soil-baffling structure, pass to again reinforced concrete circle beam (being Guan Liang, waist rail), finally be delivered to connected foundation ditch middle part symmetrical on support structure, and foundation ditch middle part is symmetrical, the two ends of support structure are all connected on the reinforced concrete circle beam on retaining wall soil-baffling structure both sides, foundation ditch limit, so just the soil pressure of both sides formed objects, opposite direction can be offset, form best stress system; 2. the vertical force that inner support is born: vertical force is mainly brace summer deadweight, is to be delivered on foundation by steel structure support column;
Therefore; the rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure of the utility model has met the effect of bearing cubic metre of earth lateral pressure; and there is the little feature of distortion, guarantee the safety of the communal facilitys such as foundation ditch bottom safety work, stability of slope and surrounding building, road and underground utilities.
3. be not subject to region and spacial influence: for the intensive deep foundation ditch of City Building, pattern foundation pit supporting structure is often subject to the restriction in region and space, the rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure of the utility model fully demonstrates its flexibility to region and space in work progress, because foundation ditch middle part is except by by crossbeam 5 and be positioned at symmetry that the two little diagonal braces 3 at crossbeam 5 two ends form to support structure, also have longeron 6 to form stable in length and breadth force structure, plane in foundation ditch forms the unsupported spaciousness of large area, spacious area can reach 65%~75% of whole foundation ditch area, can be when periphery not being impacted, guarantee the stable of foundation ditch, and the brace summer of foundation ditch (comprises crossbeam, longeron) all right erection construction temporary platform and passageway, stack constructional materials, for construction is provided convenience.
4. support span large, accelerate the earthwork and dig fortune efficiency: at the foundation ditch for subgrade, reinforced concrete inner support structure has formed an open scope of operation at whole basic plane, support span is large, operation when can meet many big machineries, for the working environment that fortune is provided convenience is dug in the earthwork.
5. have good economic benefits.Deep foundation pit reinforced concrete inner supporting structure not only material is cheap, and can effectively raise operating efficiency, has shortened the duration, has reduced construction costs, thereby obtains obvious economic benefit.
Below in conjunction with drawings and Examples, the technical characterictic of the rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure of the utility model is described further.
Accompanying drawing explanation
Fig. 1-Fig. 3: the schematic diagram of rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure:
Fig. 1: double-deck stereo figure (foundation ditch corner support structure is triangle stable support),
Fig. 2: individual layer plan view,
Fig. 3: the schematic diagram of 4 layers of vertical section structure;
Fig. 4: one of foundation ditch corner support structure (orthoscopic support);
Fig. 5: foundation ditch middle beam and symmetrical to support structure schematic diagram;
Fig. 6: steel structure support column arrangement schematic diagram;
Fig. 7-1~Fig. 7-3: ring beam structural representation:
Fig. 7-1: temporary structure,
Fig. 7-2: the annular simultaneously retaining with cylindrical shape steel structure support column strengthens structure;
Fig. 7-3: the ring-type square simultaneously retaining with cylindrical shape steel structure support column strengthens structure.
In figure:
The large diagonal brace of 1-, the together large diagonal brace of 11-outermost, the large diagonal brace of 12-second; 21-triangle stable support, 22-orthoscopic stable support;
The little diagonal brace of 3-, 41-reinforcing bar ring beam, the permanent ring beam of 421-annular, the permanent ring beam of 422-ring-type square, 5-crossbeam, 6-longeron, 7-foundation ditch limit retaining wall soil-baffling structure, 8-Guan Liang, 9-waist rail, 10-steel structure support column, 101-steel structure support column bottom; DJ-ground.
The specific embodiment
A kind of rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure, as shown in Figure 1, this rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure comprises foundation ditch limit retaining wall soil-baffling structure 7, comprises the three-dimensional supporting and protection structure of inner support and the Guan Liang of steel structure support column 10, described Guan Liang is the three-dimensional supporting and protection structure of inner support has 2 layers with the three-dimensional supporting and protection structure of inner support described in the collar tie beam of junction, retaining wall soil-baffling structure top, foundation ditch limit, and every one deck includes foundation ditch corner structure, foundation ditch middle part symmetry to support structure and longeron 6;
Described foundation ditch corner structure comprises the large diagonal brace 1 that is positioned at foundation ditch corner, on large diagonal brace 1, there is triangle stable support 21, described triangle stable support 21 summits are in foundation ditch sideline or the formed 90 ° of angular bisectors of sideline extended line and time intersection point of the outer large diagonal brace 12 of second, its both sides radiation end large diagonal brace 11 crossing (referring to Fig. 1, Fig. 2) together with outermost.
The symmetrical two little diagonal braces 3 that support structure is comprised crossbeam 5 and is positioned at crossbeam 5 two ends in described foundation ditch middle part, described crossbeam 5 is for being positioned at the beam that is parallel to foundation ditch minor face in the middle part of foundation ditch, crossbeam 5 two ends are fixedly connected with foundation ditch limit retaining wall soil-baffling structure 7, two little diagonal braces 3 are symmetrically located at respectively crossbeam both sides, and these two little diagonal braces, 3 one end are fixedly connected with crossbeam, the other end is fixedly connected with (referring to Fig. 1, Fig. 2, Fig. 5) with foundation ditch limit retaining wall soil-baffling structure; Described longeron 6 is beams that foundation ditch middle part is parallel to the long limit of foundation ditch, and described steel structure support column 10 is that through foundation ditch bottom is following, steel structure support column bottom is the steel structure support column of concrete perfusion anchoring; In foundation ditch waist longeron 6, crossbeam 5 and steel structure support column 10 three intersections, there is ring beam 4.
Described ring beam 4 has two kinds, and a kind of has been that the reinforcing bar 41(of interim booster action is referring to Fig. 7-1), another kind is the enhancing structure simultaneously retaining with steel structure support column; This enhancing structure is annular (referring to Fig. 7-2), also can be ring-type square (referring to Fig. 7-3), can also be other ring-type polygons.
In the three-dimensional supporting and protection structure of inner support and junction, foundation ditch limit retaining wall soil-baffling structure middle part, also have support wale 9, this support wale 9 is connected with crossbeam 4 and foundation ditch limit retaining wall soil-baffling structure 7 simultaneously.
Crossbeam, longeron, ring beam and the waist rail of the described three-dimensional supporting and protection structure of inner support are referred to as brace summer, are reinforced concrete inner support structure.
Described foundation ditch limit retaining wall soil-baffling structure can be diaphragm wall, can retaining piles or the various ways such as steel sheet pile.
As a kind of conversion of the utility model embodiment, the frame construction that the material that crossbeam, longeron, ring beam and the waist rail of the described three-dimensional supporting and protection structure of inner support also can adopt combined large steel frame construction or rigidity to reach foundation ditch force request is made into.
As a kind of conversion of the utility model embodiment, the number of plies n of the described three-dimensional supporting and protection structure of inner support also can increase or reduce, and the span of general n is: n is more than or equal to 1 to be less than or equal to 30 integer, as required, and also can be more multi-layered.
As a kind of conversion of the utility model embodiment, when foundation ditch area is little or foundation ditch length is not more than foundation ditch width, for example, during approximate rectangular structure, also can be without longeron 6.

Claims (7)

1. a rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure, comprise foundation ditch limit retaining wall soil-baffling structure (7), comprise the three-dimensional supporting and protection structure of inner support and the Guan Liang of steel structure support column (10), described Guan Liang is the collar tie beam of the three-dimensional supporting and protection structure of inner support and junction, retaining wall soil-baffling structure top, foundation ditch limit, it is characterized in that: the three-dimensional supporting and protection structure of described inner support has n layer, every one deck includes foundation ditch corner structure, foundation ditch middle part is symmetrical to support structure and longeron (6), described foundation ditch corner structure comprises large diagonal brace (1) and the bight stable support (2) that is positioned at foundation ditch corner, the symmetrical two little diagonal braces (3) that support structure is comprised crossbeam (5) and is positioned at crossbeam (5) two ends in described foundation ditch middle part, described crossbeam (5) is for being positioned at the beam that is parallel to foundation ditch minor face in the middle part of foundation ditch, crossbeam (5) two ends are fixedly connected with foundation ditch limit retaining wall soil-baffling structure, at crossbeam (5) two ends, there are respectively the two little diagonal braces (3) that are symmetrically located at crossbeam both sides, this two little diagonal brace (3) one end is fixedly connected with crossbeam, the other end is fixedly connected with foundation ditch limit retaining wall soil-baffling structure, described longeron (6) is the beam that foundation ditch middle part is parallel to the long limit of foundation ditch, and described steel structure support column (10) is below through foundation ditch bottom, at the bottom of post, is the steel structure support column of concrete perfusion anchoring, in foundation ditch waist longeron, crossbeam and steel structure support column three intersection, have ring beam (4), said n be more than or equal to 1 be less than 30 between arbitrary integer.
2. rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure according to claim 1, it is characterized in that: on the large diagonal brace (1) of described foundation ditch corner structure, have triangle stable support (21) or orthoscopic stable support (22), described triangle stable support (21) summit is in foundation ditch sideline or the formed 90 ° of angular bisector PP of sideline extended line and time intersection point of the outer large diagonal brace of second (12), and its both sides radiation end large diagonal brace (11) together with outermost is crossing; One end of described orthoscopic stable support (22) is in foundation ditch sideline or the formed 90 ° of angular bisectors of sideline extended line and time intersection point of the outer large diagonal brace of second (12), and its other end large diagonal brace (11) together with outermost is crossing.
3. rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure according to claim 1, it is characterized in that: described ring beam (4) has two kinds, a kind of has been the reinforcing bar (41) of interim booster action, another kind is the enhancing structure simultaneously retaining with steel structure support column, and this enhancing structure is annular or ring-type polygon.
4. rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure according to claim 1, it is characterized in that: in the three-dimensional supporting and protection structure of inner support and junction, foundation ditch limit retaining wall soil-baffling structure middle part, also have support wale (9), this support wale is connected with crossbeam (5) and foundation ditch limit retaining wall soil-baffling structure (7) simultaneously.
5. rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure according to claim 1, is characterized in that: crossbeam, longeron, ring beam and the waist rail of the described three-dimensional supporting and protection structure of inner support are reinforced concrete inner support structure.
6. rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure according to claim 1, is characterized in that: crossbeam, longeron, ring beam and the waist rail of the described three-dimensional supporting and protection structure of inner support is that combined large steel frame construction or rigidity reach the frame construction that the material of foundation ditch force request is made into.
7. rectangle deep foundation ditch large-span steel-reinforced concrete inner supporting structure according to claim 1, is characterized in that: when foundation ditch length is not more than width, and also can be without longeron.
CN201320323980.XU 2013-06-06 2013-06-06 Long-span reinforced concrete inner support structure of rectangular deep foundation pit CN203403422U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103334439A (en) * 2013-06-06 2013-10-02 广西建工集团第五建筑工程有限责任公司 Long-span reinforced concrete inner support structure of rectangular deep foundation pit and construction method of structure
CN103967018A (en) * 2014-05-09 2014-08-06 深圳市工勘岩土集团有限公司 Deep and large foundation pit angle supporting horizontal shearing resistance structure
CN104727324A (en) * 2015-03-20 2015-06-24 朱奎 Support construction method of irregular basement
CN105089061A (en) * 2015-08-11 2015-11-25 泰兴市第一建筑安装工程有限公司 Ultra-deep foundation pit supporting method
CN106284370A (en) * 2016-08-20 2017-01-04 东通岩土科技(杭州)有限公司 Building inner support list column joist system
CN106320347A (en) * 2016-08-28 2017-01-11 东通岩土科技(杭州)有限公司 Self-holding type bracket for steel pipe support of foundation pit
CN106958247A (en) * 2015-05-22 2017-07-18 朱奎 Basement annular brace support system

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103334439A (en) * 2013-06-06 2013-10-02 广西建工集团第五建筑工程有限责任公司 Long-span reinforced concrete inner support structure of rectangular deep foundation pit and construction method of structure
CN103334439B (en) * 2013-06-06 2015-06-24 广西建工集团第五建筑工程有限责任公司 Long-span reinforced concrete inner support structure of rectangular deep foundation pit and construction method of structure
CN103967018A (en) * 2014-05-09 2014-08-06 深圳市工勘岩土集团有限公司 Deep and large foundation pit angle supporting horizontal shearing resistance structure
CN103967018B (en) * 2014-05-09 2016-10-05 深圳市工勘岩土集团有限公司 Deep big foundation pit angle support level shear structure
CN104727324B (en) * 2015-03-20 2016-08-03 朱奎 Irregular basement construction method for supporting
CN104727324A (en) * 2015-03-20 2015-06-24 朱奎 Support construction method of irregular basement
CN106958247A (en) * 2015-05-22 2017-07-18 朱奎 Basement annular brace support system
CN105089061B (en) * 2015-08-11 2017-01-18 泰兴市第一建筑安装工程有限公司 Ultra-deep foundation pit supporting method
CN105089061A (en) * 2015-08-11 2015-11-25 泰兴市第一建筑安装工程有限公司 Ultra-deep foundation pit supporting method
CN106284370A (en) * 2016-08-20 2017-01-04 东通岩土科技(杭州)有限公司 Building inner support list column joist system
CN106284370B (en) * 2016-08-20 2018-07-13 东通岩土科技(杭州)有限公司 Build inner support list column joist system
CN106320347A (en) * 2016-08-28 2017-01-11 东通岩土科技(杭州)有限公司 Self-holding type bracket for steel pipe support of foundation pit
CN106320347B (en) * 2016-08-28 2019-01-15 东通岩土科技(杭州)有限公司 Foundation pit steel pipe support is with from tight-holding type bracket

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Granted publication date: 20140122

Termination date: 20190606