CN102363955A - Prefabricated transverse H-shaped underground continuous wall joint section structure - Google Patents

Prefabricated transverse H-shaped underground continuous wall joint section structure Download PDF

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Publication number
CN102363955A
CN102363955A CN2011103398712A CN201110339871A CN102363955A CN 102363955 A CN102363955 A CN 102363955A CN 2011103398712 A CN2011103398712 A CN 2011103398712A CN 201110339871 A CN201110339871 A CN 201110339871A CN 102363955 A CN102363955 A CN 102363955A
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China
Prior art keywords
joint
prefabricated
underground continuous
continuous
junction
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Pending
Application number
CN2011103398712A
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Chinese (zh)
Inventor
赵锡铭
王强
尹洪江
李建军
毕江寰
肖海波
赵旭光
刘江松
毛繁
刘迎鑫
张振辉
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TIANJIN YIJIANG CONSTRUCTION ENGINEERING Co Ltd
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TIANJIN YIJIANG CONSTRUCTION ENGINEERING Co Ltd
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Priority to CN2011103398712A priority Critical patent/CN102363955A/en
Publication of CN102363955A publication Critical patent/CN102363955A/en
Pending legal-status Critical Current

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Abstract

The invention provides a prefabricated transverse H-shaped underground continuous wall joint section structure. Two side end parts of the cross section of a joint section are provided with semicircular grooves, the middle part of the cross section of the joint section is provided with a circular hole, the joint section is longitudinally divided into a plurality of length sections, a connecting steel plate is arranged at the outer side of the joint of every two length sections, and four sides of the bottom of the joint section are provided with edge feet. The structure has the advantages that: the prefabricated transverse H-shaped underground continuous wall joint section replaces ground connected wall joint equipment and replaces a part of cast-in-place ground connected wall structure, so that the process of pulling the joint equipment is avoided and the construction period and the manufacturing cost are saved; the lower end of the joint section is wedge-shaped and inserted into soil by means of gravity, so that the lower end is effectively fixed, and the width and the quality of the cast-in-place breadth can be effectively ensured; the designed width of the prefabricated continuous wall joint breadth is not less than 1,500 millimeters, and the bypass seepage path of concrete is lengthened; by curved surface design of the contact face of the prefabricated continuous wall joint breadth and the cast-in-place ground connected wall, the seepage problem of the ground connected wall is effectively solved; and the prefabricated continuous wall joint section is made into a member cancelled structure by adopting proper length section by section, so the structure is convenient to transport and hoist.

Description

Prefabricated I shape underground continuous wall connector segment structure
Technical field
The present invention relates to a kind of foundation structure of building parts, particularly a kind of prefabricated I shape underground continuous wall connector segment structure.
Background technology
Nineteen fifty Italy's beginning is used Diaphragm Wall in the reservoir dam engineering, China had introduced this technology in 1958.The mid-1970s, this technology begins to promote the use of industries such as building, colliery, municipal administration.Ground-connecting-wall is used very extensively in deep-foundation pit engineering as a kind of space enclosing structure of underground construction.Both can be used as interim retaining soil, water-stopping structure, also can replace outer wall of basement becomes permanent underground structure.
Ground-connecting-wall construction mainly is divided into: lead wall construction, reinforcing cage makings, mud making, grooving setting-out, grooving, time fore shaft pipe, reinforcing cage hangs and transfer reinforcing cage, descend pulling concrete conduit fluid concrete, pull out the fore shaft pipe.Wherein, the fore shaft pipe construction is a bottleneck in the ground-connecting-wall work progress, owing to receive the requirement of self rigidity and ground-connecting-wall construction technology, has directly influenced the construction quality of ground-connecting-wall, is not also effectively solved so far; Along with deep-foundation pit engineering towards also coming dark more direction to develop, this problem is particularly outstanding.Through the actual field investigation, in fore shaft pipe construction process, mainly there is following problem:
1. the cell wall out of plumb causes the skew of fore shaft pipe position
Because construction machinery and manual work become good cell wall always to have two ends off plumb problem in the bottom.This just causes in following fore shaft pipe, and the fore shaft pipe can not be put according to the position of the appearance of putting well in advance, has influence on the width of this width of cloth wall and transferring of reinforcing cage.The space, back of fore shaft pipe is excessive simultaneously, has strengthened the workload of backfilling of earthwork, also is easy to generate the problem of spillage.
2. the fore shaft pipe is fixing unstable, causes the fore shaft pipe to tilt
The comprising fixedly that the upper end is fixing and fix with the lower end of fore shaft pipe: the upper end fixedly is at physical existence, and controls easily; The lower end is fixing mainly mentions one section of fore shaft pipe through loop wheel machine and its free-falling is inserted in soil it is fixed, and this fixing means control is proper, and the lower end of fore shaft pipe generally can not produce big displacement, but underwater operation quality control difficulty is big.Very easily cause the fore shaft pipe fixing unstable, cause the fore shaft pipe to tilt.
3. the problem of backfill behind the fore shaft pipe
After the fore shaft pipe is transferred, can not be close to the soil body, certain slit is always arranged, must carry out backfilling of earthwork, otherwise concrete walked around the fore shaft pipe, will cause very big obstacle the construction of next width of cloth diaphragm wall.But because the slit is less, be full of mud again, backfill is difficult for closely knit.
4. fore shaft pipe level is little to rigidity, and lateral pressure is big during concrete pouring, and its verticality is difficult to control
In the practice of construction, the fore shaft pipe certainly will cause the fabric width of this width of cloth wall to surpass design width as horizontal-shift occurring, has taken the fabric width of next width of cloth wall.The problem that the generation of the generation of this problem and spillage problem has caused the fabric width of the closed width of cloth to dwindle jointly causes every width of cloth ground-connecting-wall vertical abutment joint not straight, and seepage very easily appears in imprecision.
5. pull out the problem of fore shaft pipe
Pull out the fore shaft pipe, the time of grasping concrete initial set is crucial, in practical operation owing to grasp the bad initial setting time; Pulled out early and can cause quality accident; It is bigger to pull out the bond stress behind the concrete coagulation late, makes that the fore shaft pipe is difficult to extract even pull off, time-consuming taking a lot of work; Also possibly cause quality accident, be difficult to handle.
Summary of the invention
For addressing the above problem; The purpose of this invention is to provide a kind of prefabricated I shape underground continuous wall connector segment structure, replace the ground-connecting-wall junction device and replace a part of cast-in-place ground-connecting-wall structure, to accelerate the duration; Improve the ground-connecting-wall construction quality, reach safety, economy, convenient construction.
For realizing above-mentioned purpose; The technical scheme that the present invention adopts provides a kind of prefabricated I shape underground continuous wall connector segment structure; Wherein: the both side ends of said junction cross section is a semi-circular recesses, and the middle part of junction cross section is a circular port, and said junction vertically is divided into a plurality of length joints; The outside, per two length joint junction is provided with the connection steel plate, is provided with the sword pin around the bottom of said junction.
Effect of the present invention is the characteristics the first of this prefabricated I shape underground continuous wall connector section, and this prefabricated continuous wall connector width of cloth replaces the ground-connecting-wall junction device and replaces a part of cast-in-place ground-connecting-wall structure, removes the operation that junction device need pull up from, saves duration and cost; The second, this prefabricated continuous wall connector width of cloth, the lower end is a wedge-shaped design, reliable gravity is cut in the soil, effectively fixedly the lower end; The 3rd, this prefabricated continuous wall connector width of cloth, lateral rigidity is bigger, is far longer than the ground-connecting-wall junction device, can effectively guarantee the fabric width and the quality of the cast-in-place width of cloth; The 4th, this prefabricated continuous wall connector width of cloth, the fabric width design is not less than 1500mm, has extended around oozing the path, effectively solves concrete around the problem of oozing; The 5th, the curved design of this prefabricated continuous wall connector width of cloth and cast-in-place ground-connecting-wall contact surface effectively solves the ground-connecting-wall leakage problems; The 6th, this prefabricated continuous wall connector width of cloth adopts the suitable length merogenesis to make, and takes member structure on an empty stomach, solves transportation, lifting problem.
Description of drawings
Fig. 1-a is the positive facade cut-away view of prefabricated I shape underground continuous wall connector section of the present invention;
Fig. 1-b is a prefabricated I shape underground continuous wall connector section side elevation sketch map of the present invention;
Fig. 2 is a prefabricated I shape underground continuous wall connector section generalized section of the present invention;
Fig. 3 is prefabricated I shape underground continuous wall connector section of the present invention and cast-in-place width of cloth layout sketch map.
Among the figure:
1, circular port 2, groove 3, first length joint
4, connect steel plate 5, second length joint 6, sword pin
The specific embodiment
In conjunction with accompanying drawing prefabricated I shape underground continuous wall connector segment structure of the present invention is explained.
Prefabricated I shape underground continuous wall connector segment structure of the present invention is: the both side ends of said junction cross section is semicircular groove 1; The middle part of junction cross section is a circular port 2; Said junction vertically is divided into a plurality of length joints; The outside, per two length joint junction is provided with the connection steel plate, is provided with sword pin 6 around the bottom of said junction, and the length of said junction is not less than 1500mm.
Like Fig. 1-a, Fig. 1-b, Fig. 2, shown in Figure 3; Prefabricated I shape underground continuous wall connector segment structure of the present invention; This prefabricated continuous wall connector section is located between two cast-in-place diaphragm walls, and the junction fabric width is not less than 1500mm, to reach the purpose that the control concrete streams.Junction horizontal projection transverse shape, junction both side ends are semicircular groove, and be middle for circular port forms cavity, to reduce the deadweight of junction.The length of prefabricated continuous wall connector section can be according to foundation depth, calculates through professional supporting design software and confirms, and according to prefabricated, the transport capacity of factory, selects two joints or more piece is prefabricated and on-site hoisting.Vertically be divided into the outside, first length joint, 3 and second length joint, 5, two length joint junction like the junction of Fig. 1-a, Fig. 1-b and be provided with and connect steel plate 4, be provided with sword pin 6 around the bottom of junction, convenient incision soil body during construction.
Prefabricated I shape underground continuous wall connector section of the present invention replaces the ground-connecting-wall junction device, and replaces the implementation procedure of the cast-in-place underground even wall construction of a part following:
Step 1: prefabricated underground continuous wall connector section at the scene or prefabrication underground continuous wall connector section, according to the restriction of lifting and transportation, with prefabricated underground continuous wall connector section be divided into two joints or more piece prefabricated; Joint location should be located at the less position of shearing; And take the steel plate reinforcement measure, according to the engineering actual conditions, calculate definite through professional supporting design software; The length of general every joint is no more than 16000~18000mm, and weight is no more than 30 tons.
Step 2: lead the wall construction with diaphragm wall technology, "] [" shaped steel reinforced concrete of constructing in advance in the inside and outside both sides of the diaphragm wall of constructing is in advance led wall, and absolute altitude suitable for reading is consistent with natural terrace.
Step 3: grooving setting-out unwrapping wire is confirmed the control line box sign of prefabricated " worker " font underground continuous wall connector section, cast-in-place diaphragm wall section.
Step 4: grooving with trench machine at mud; Claim again under the situation of retaining walls such as thixotropic slurry, stable liquid, stabilizing solution; Each excavation certain-length, the groove of the unit groove section of prefabricated " worker " font underground continuous wall connector section waits to be excavated to the body refuse that projected depth and scavenger precipitation get off.
Step 5: hang prefabricated underground continuous wall connector section and at first hang under the prefabricated underground continuous wall connector section and save; Save or go up joint then in the lifting; Centering also connects joint down; Adopt to connect the steel plate welding, last integral body is transferred prefabricated underground continuous wall connector section, makes the sword pin 6 incision soil body degree of depth of junction bottom wedge shape be not less than 500mm.
Step 6: timeliness leaves standstill after the construction of prefabricated underground continuous wall connector section finishes, and the timeliness that must carry out more than 48 hours leaves standstill, and makes the soil body of prefabricated underground continuous wall connector section grooving periphery fully return to embrace heavy real.After returning armful heavy reality, the cast-in-place diaphragm wall width of cloth that could construct and close on.
Step 7: during prefabricated underground continuous wall connector section and cast-in-place underground even wall width of cloth intervening sequences construction timeliness leave standstill; The prefabricated underground continuous wall connector section that can construct continuously and close on forms prefabricated underground continuous wall connector section and the cast-in-place underground order that the wall width of cloth is constructed at interval that connects.

Claims (2)

1. prefabricated I shape underground continuous wall connector segment structure; It is characterized in that: the both side ends of said junction cross section is semicircular groove (1); The middle part of junction cross section is circular port (2); Said junction vertically is divided into a plurality of length joints, and the outside, per two length joint junction is provided with the connection steel plate, is provided with sword pin (6) around the bottom of said junction.
2. prefabricated I shape underground continuous wall connector segment structure according to claim 1, it is characterized in that: the length of said junction is not less than 1500mm.
CN2011103398712A 2011-10-31 2011-10-31 Prefabricated transverse H-shaped underground continuous wall joint section structure Pending CN102363955A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103821177A (en) * 2012-11-16 2014-05-28 中国二十冶集团有限公司 Underground diaphragm wall prefabricated reinforced concrete connector and connection method thereof
CN103835316A (en) * 2014-01-24 2014-06-04 中国建筑第八工程局有限公司 Connector structure of precast underground continuous wall and construction method
CN105568959A (en) * 2015-12-28 2016-05-11 上海市机械施工集团有限公司 Prefabricated assembly type blocking wall device and construction method thereof
CN105887806A (en) * 2016-06-13 2016-08-24 上海强劲地基工程股份有限公司 Assembled type underground diaphragm wall and construction method thereof
CN108677925A (en) * 2018-07-01 2018-10-19 沈阳建筑大学 Half coercion underground continuous wall structure and its construction method
CN109296010A (en) * 2018-10-26 2019-02-01 上海市基础工程集团有限公司 The joint structure and construction method vertically connected for coercion underground continuous wall

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CN201981532U (en) * 2011-04-02 2011-09-21 中铁十二局集团建筑安装工程有限公司 Bearing type super deep underground continuous wall adaptor
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CN201981532U (en) * 2011-04-02 2011-09-21 中铁十二局集团建筑安装工程有限公司 Bearing type super deep underground continuous wall adaptor
CN202298601U (en) * 2011-10-31 2012-07-04 天津一建建筑工程有限公司 Structure of joint section of prefabricated H-shaped underground diaphragm wall

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103821177A (en) * 2012-11-16 2014-05-28 中国二十冶集团有限公司 Underground diaphragm wall prefabricated reinforced concrete connector and connection method thereof
CN103821177B (en) * 2012-11-16 2016-08-10 中国二十冶集团有限公司 Diaphram wall prefabricated reinforced concrete joint and method of attachment
CN103835316A (en) * 2014-01-24 2014-06-04 中国建筑第八工程局有限公司 Connector structure of precast underground continuous wall and construction method
CN103835316B (en) * 2014-01-24 2016-01-20 中国建筑第八工程局有限公司 A kind of joint design of coercion underground continuous wall and construction method
CN105568959A (en) * 2015-12-28 2016-05-11 上海市机械施工集团有限公司 Prefabricated assembly type blocking wall device and construction method thereof
CN105887806A (en) * 2016-06-13 2016-08-24 上海强劲地基工程股份有限公司 Assembled type underground diaphragm wall and construction method thereof
CN108677925A (en) * 2018-07-01 2018-10-19 沈阳建筑大学 Half coercion underground continuous wall structure and its construction method
CN109296010A (en) * 2018-10-26 2019-02-01 上海市基础工程集团有限公司 The joint structure and construction method vertically connected for coercion underground continuous wall

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Application publication date: 20120229