CN201347558Y - Ring-shaped bracing structure system of deep and large foundation pit - Google Patents

Ring-shaped bracing structure system of deep and large foundation pit Download PDF

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Publication number
CN201347558Y
CN201347558Y CNU2008202049648U CN200820204964U CN201347558Y CN 201347558 Y CN201347558 Y CN 201347558Y CN U2008202049648 U CNU2008202049648 U CN U2008202049648U CN 200820204964 U CN200820204964 U CN 200820204964U CN 201347558 Y CN201347558 Y CN 201347558Y
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CN
China
Prior art keywords
supports
foundation pit
support
outer shroud
ring
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Expired - Lifetime
Application number
CNU2008202049648U
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Chinese (zh)
Inventor
朱宗明
黄俊光
李崇彦
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Guangzhou Design Institute
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Guangzhou Design Institute
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Priority to CNU2008202049648U priority Critical patent/CN201347558Y/en
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Publication of CN201347558Y publication Critical patent/CN201347558Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a ring-shaped bracing structure system of a deep and large foundation pit, which is a ring-shaped truss bracing structure system. The ring-shaped bracing structure system comprises an inner ring brace, an outer ring brace and a truss bracing structure arranged between the inner ring brace and the outer ring brace, wherein the truss bracing structure is formed by support rods connected with the inner ring brace and the outer ring brace, and a horizontal support system or a stereoscopic support system of the deep and large foundation pit is formed by the inner ring brace, the truss bracing structure and the outer ring brace. The ring-shaped bracing structure system has clear stress, low support system deformation, large construction space because no bracing component is arranged inside the inner ring brace, greatly saves bracing materials, saves costs on the basis of being safe and applicable, and shortens construction period.

Description

Deep big foundation pit annular supporting structure system
Technical field
The utility model relates to technical field of building construction, relates in particular to the support system of deep big foundation pit in a kind of building operations geotechnical engineering.
Background technology
In building operations was built, for making full use of the underground space, the excavation of foundation ditch was more and more darker, increasing now.The commonly used support system traditional for deep big foundation pit mainly contains: side direction retaining soil body system (as castinplace pile, preformed pile and diaphragm wall) and horizontal support system (as drawing anchor, steel to support and the concrete support).
Deep big foundation pit mainly is to build urban central zone in, and the design and construction of foundation ditch are changeed by Deformation control by strength control.Because the red line scope that horizontal support system can not enter adjacent plot, and foundation ditch peripheral space geological conditions complexity, thereby the anchor mode of drawing in the horizontal support system is difficult to be suitable for.Because the span of deep big foundation pit is big, and the mode that steel supports is big in the big situation lower stress reduction of slenderness ratio when bearing pressure, and its support interval is little, node connects complicatedly, and therefore the steel supporting way in the horizontal support system also is difficult to be suitable for.And, be better than other horizontal support systems owing to it has advantages such as the span of support is big, bearing capacity is high, the support level spacing is big, easy to connect by the horizontal support system that steel concrete is formed.But still there is following defective in the horizontal support system of steel concrete at present: the cost height, and it is stressed clear inadequately to support, and the support system distortion is big.In addition, how effectively enlarging construction space, the accelerating construction progress of steel concrete support system on the basis of safe and applicable, is still to need at present the problem that solves.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of inside to have big construction space, stressed clear, deep big foundation pit annular supporting structure system that the support system distortion is little, so that can on the basis of safe and applicable, save cost, and shorten the construction period.
The purpose of this utility model is achieved by the following technical programs:
A kind of deep big foundation pit annular supporting structure system that the utility model provides is annular truss braced structures system, comprises that interior ring supports and outer shroud supports, and between interior ring support and outer shroud support lattice supporting framework is set; Described lattice supporting framework is made of the supporting rod with interior ring support and outer shroud support and connection, is supported horizontal support system or the three-dimensional support system that constitutes deep big foundation pit by interior ring support, lattice supporting framework and outer shroud.Ring supports inside without any supporting member in of the present utility model, has saved backing material greatly, and has enlarged construction space.Interior ring supports the inner building core part that comprises main total duration of influence.
The utility model can be taked following further measure: ring supports reinforced concrete structure ringwise in described, and outer shroud supports and is octagon, and outer shroud supports and is provided with oblique support, angle brace and the waist rail that intersects with it, thereby power transmission is clear, the support system distortion is little.
Lattice supporting framework described in the utility model is formed by connecting by angle brace bar, hound and crossbeam, and described crossbeam comprises one or more combinations in bottom girder, waist rail and the back timber.
The present invention has following beneficial effect:
(1) big construction space: by rational support arrangement, in the middle of foundation ditch, made up big annular construction space as far as possible, created favourable execution conditions, helped accelerating construction progress, shortened the construction period for main structure construction.
(2) save material, cost is low: backing material has been saved greatly without any supporting member in big annular brace system inside.
(3) power transmission is clear, and the support system distortion is little: solved the stressed problem in foundation ditch bight by auxiliary oblique support, angle brace, stressed being born by annular horizontal support at all the other foundation ditch middle parts.
Description of drawings
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail:
Fig. 1 is the structural representation of the utility model embodiment.
Among the figure: interior ring supports 1, lattice supporting framework 2, and outer shroud supports 3, agent structure core space 4
The specific embodiment
Figure 1 shows that embodiment of the present utility model, be the foundation ditch of TV transmission tower building.Foundation ditch supports span big (about 106 meters), and foundation ditch supports can not influence the construction of king-tower tower body, and place geology is poor, the control displacement is tight, adopts conventional interior support and outer bolster anchor support system not to meet the demands.So adopt 800 millimeters thick diaphragm walls+two road concrete major diameter annular truss horizontal supports.As shown in Figure 1, ring support 1, lattice supporting framework 2 and outer shroud supported 3 in annular truss horizontal support architecture comprised.Interior ring supports 1 ringwise, and planar diameter is 90.5 meters; Outer shroud supports 3 and is octagon, and outer shroud supports 3 and is provided with oblique support, angle brace and the waist rail that intersects with it.Lattice supporting framework 2 constitutes by supporting 3 supporting rods that are connected with interior ring support 1 with outer shroud, and as shown in Figure 1, lattice supporting framework 2 is formed by connecting by angle brace bar, hound and crossbeam, and crossbeam comprises one or more combinations in bottom girder, waist rail and the back timber.
Interior ring supports 1 as the lower chord tension, and bears pressure with arching, can effectively reduce and encircle the sectional dimension that supports in the annular.
800 millimeters thick diaphragm walls are as sealing and the double simultaneously superimposed exterior wall of permanent basement of doing of support system, support in the concrete and adopt oblique support to solve four jiaos the stressed problem in bight, the major diameter central shoring forms stressed good annular truss structure in conjunction with waist rail and oblique support, has solved foundation ditch length of side middle part problem and has adjusted foundation ditch four sides stressing conditions.The layout Path of Force Transfer that supports in the present embodiment concrete is clear, provide enough big construction space for intermediate host structural core district 4.

Claims (3)

1, a kind of deep big foundation pit annular supporting structure system is characterized in that: be annular truss braced structures system, comprise that interior ring supports (1) and outer shroud supports (3), support between (1) and the outer shroud support (3) that at interior ring lattice supporting framework (2) being set; Described lattice supporting framework (2) supports the supporting rod formation that (3) are connected by supporting (1) with interior ring with outer shroud, supports (1), lattice supporting framework (2) and outer shroud by interior ring and supports horizontal support system or the three-dimensional support system that (3) constitute deep big foundation pit.
2, deep big foundation pit annular supporting structure system according to claim 1, it is characterized in that: ring supports (1) reinforced concrete structure ringwise in described, outer shroud supports (3) and is octagon, and outer shroud supports (3) and is provided with oblique support, angle brace and the waist rail that intersects with it.
3, deep big foundation pit annular supporting structure system according to claim 1, it is characterized in that: described lattice supporting framework (2) is formed by connecting by angle brace bar, hound and crossbeam, and described crossbeam comprises one or more combinations in bottom girder, waist rail and the back timber.
CNU2008202049648U 2008-12-10 2008-12-10 Ring-shaped bracing structure system of deep and large foundation pit Expired - Lifetime CN201347558Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008202049648U CN201347558Y (en) 2008-12-10 2008-12-10 Ring-shaped bracing structure system of deep and large foundation pit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008202049648U CN201347558Y (en) 2008-12-10 2008-12-10 Ring-shaped bracing structure system of deep and large foundation pit

Publications (1)

Publication Number Publication Date
CN201347558Y true CN201347558Y (en) 2009-11-18

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CNU2008202049648U Expired - Lifetime CN201347558Y (en) 2008-12-10 2008-12-10 Ring-shaped bracing structure system of deep and large foundation pit

Country Status (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102828520A (en) * 2012-09-11 2012-12-19 中煤科工集团武汉设计研究院中汉岩土工程分公司 Ring-shaped inner supporting structure used in deep peat soil deep foundation pit
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
CN104563127A (en) * 2014-12-01 2015-04-29 南京工业大学 Novel deep foundation pit supporting structure and construction method for same
CN105019553A (en) * 2015-05-22 2015-11-04 朱奎 Bracing structure for annular supports of basement

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102828520A (en) * 2012-09-11 2012-12-19 中煤科工集团武汉设计研究院中汉岩土工程分公司 Ring-shaped inner supporting structure used in deep peat soil deep foundation pit
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
CN104563127A (en) * 2014-12-01 2015-04-29 南京工业大学 Novel deep foundation pit supporting structure and construction method for same
CN105019553A (en) * 2015-05-22 2015-11-04 朱奎 Bracing structure for annular supports of basement
CN105019553B (en) * 2015-05-22 2017-07-28 朱奎 Basement annular brace supporting construction

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Granted publication date: 20091118

CX01 Expiry of patent term