CN104153346A - Large-scale prefabricated prestressed underground continuous wall - Google Patents
Large-scale prefabricated prestressed underground continuous wall Download PDFInfo
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- CN104153346A CN104153346A CN201310340017.7A CN201310340017A CN104153346A CN 104153346 A CN104153346 A CN 104153346A CN 201310340017 A CN201310340017 A CN 201310340017A CN 104153346 A CN104153346 A CN 104153346A
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Abstract
The invention belongs to the technical field of building construction structures and particularly relates to a large-area prefabricated prestressed underground continuous wall. The large-area prefabricated prestressed underground continuous wall comprises a prefabricated prestressed wall body, the prefabricated prestressed wall body is fixed to a peripheral soil layer through fixing anchor rods, expansion ends are arranged at the head ends of the fixing anchor rods, partition plates are arranged between the prefabricated prestressed wall body and the peripheral soil layer, a plurality of reserved holes are distributed in the prefabricated prestressed wall body, sleeves are arranged on the inner walls of the reserved holes in a sleeved mode, the fixing anchor rods penetrate through the sleeves, and the expansion ends at the head ends of the fixing anchor rods are fastened into the peripheral soil layer. The invention further relates to a construction method of the large-area prefabricated prestressed underground continuous wall. The construction method of the large-area prefabricated prestressed underground continuous wall is applicable to large-area wall construction, and wall segment joints can be handled quite conveniently, so that the underground continuous wall is safer and more reliable in structure, and more and more construction requirements and function requirements of underground engineering are met. The construction method of the large-area prefabricated prestressed underground continuous wall will have good application prospects in the technical field of building construction structures.
Description
Technical field
The invention belongs to building operations technical field of structures, be specifically related to a kind of large area prefabricated prestressed underground continuous wall, also relate to the construction method of this kind of large area prefabricated prestressed underground continuous wall.
Background technology
In recent years, along with socioeconomic fast development, ground and space, upper strata are day by day in short supply, therefore, now increasing underground building is dropped into and is built, as in order to expand city for the subway of the supporting capacity of flow of personnel, Underground Fast-driving Road for quick traffic, also has various underground stores.Owing to normally carrying out infrastructure in ripe city now, the building of therefore often need protection ground and upper sheaf space is unaffected, more can not cause the phenomenon such as collapse.Diaphragm wall, as one of retaining wall common type of deep foundation pit support, has obtained application more widely in Tall Building Foundation engineering, municipal underground construction.Especially at soft foundation, city hive and the foundation ditch that need to protect adjacent structure and underground utilities, block selecting fortifield village revetment headed by diaphragm wall.
Diaphragm Wall originates from Europe, and it is to use the method two of mud and tremie concrete to grow up according to well-digging and oil drilling, becomes effective technology in underground construction and Construction of Deep Foundation.General diaphragm wall can be defined as: utilize various trench machines, retaining wall effect by means of mud, underground, dig out narrow and dark groove, and pour into a mould suitable material within it and form there is together percolation-proof, the continuous underground wall body of gear soil and weight-bearing function.
Prestressing technique is one of ten new technologies of current building field, has broad application prospects.This technology can be given full play to high strength cast iron and the high material property of concrete crushing strength, not only can saving steel and concrete, and can improve structure function, solve the insoluble technical problem of other structural meterialss.As connect in paddy in long span building, bridge and some special types, prestressing technique all demonstrates powerful vitality.If prestressing technique is applied in continuous underground wall structure, can improve the structural performance of diaphragm wall, reduce reinforcing bar, concrete amount, to increasing economic efficiency, can play an important role.Such as: the Chinese patent that application number is 200910185967.0 discloses a kind of prefabricated prestressing diaphragm wall and construction method thereof, body of wall on this kind of diaphragm wall longitudinal direction is by segmented setting, in each section of body of wall, be reserved with the through hole that longitudinally penetrates body of wall and the bolthole that penetrates body of wall along thickness of wall body direction, and described through hole and bolthole are non-intersect in body of wall, in the through hole of all bodies of wall, be equipped with prestressed reinforcement from top to bottom, and in the bolthole of each section of body of wall, be provided with the anchor pole that is implanted into the soil layer of body of wall periphery to make in the horizontal direction body of wall and peripheral soil layer fix.This technology has reduced the quantity of thickness, minimizing arrangement of reinforcement and the inner support of diaphragm wall to a certain extent, but due to body of wall is carried out to block assembly, when connecting for every section, need to meet higher matching requirements, the integral rigidity that guarantee is good and non-deformability, and the processing of junction often easily goes wrong, wall body structure is complicated, and difficulty of construction is obviously strengthened.
Summary of the invention
The object of the present invention is to provide a kind of large area prefabricated prestressed underground continuous wall, simple in structure, greatly simplify work progress, can guarantee good integral rigidity and non-deformability again simultaneously.
The construction method that another object of the present invention is to provide this kind of large area prefabricated prestressed underground continuous wall, has obtained significant economic benefit and resultant effect in construction safety, efficiency, duration, cost, quality and field control.
For achieving the above object, the technical solution used in the present invention is: a kind of large area prefabricated prestressed underground continuous wall, comprise prefabricated prestressing force body of wall, described prefabricated prestressing force body of wall is fixed on peripheral soil layer by fixing anchor bar, described fixing anchor bar head end is provided with swollen expansion termination, between described prefabricated prestressing force body of wall and described peripheral soil layer, be provided with dividing plate, on described prefabricated prestressing force body of wall, be distributed with a plurality of preformed holes, on described preformed hole inwall, cover has sleeve pipe, described fixing anchor bar is through described sleeve pipe, the described swollen expansion termination of its head end is fastened in described peripheral soil layer.Adopt prefabricated body of wall, exempted the complicated construction operation of cast-in-site, avoid body of wall folder mud, the phenomenons such as leakiness of vibrating, and prestressing force body of wall, excellent combination property, saving of labor is saved trouble.Between prefabricated prestressing force body of wall and peripheral soil layer, add dividing plate, between body of wall and peripheral soil layer, play good cushioning effect, and the lateral pressure stable and uniform that body of wall is subject to, percolation-proof and the native function of gear all significantly promote.In addition, if while there is earthquake or other thumps, dividing plate can play good cushioning effect, integral rigidity and the non-deformability of protection diaphragm wall.Under equal conditions, the thickness that can reduce body of wall is original 1/2～2/3, and its load-bearing and shock resistance are still quite excellent.
As preferably, described prefabricated prestressing force body of wall lower end is provided with rinforcement bar.Rinforcement bar can further be reinforced body of wall, guarantees its weight-bearing function.
As preferably, on described dividing plate, be distributed with the through hole corresponding with described preformed hole, described sleeve pipe penetrates described preformed hole and described through hole.
Described sleeve pipe is made by PA6.PA6 is nylon, belongs to engineering plastics, has high strength and high-wearing feature, can fine protection fixing anchor bar internal construction.
Described prefabricated prestressing force body of wall is post-tensioned prestressing wall.Post-tensioned prestressing wall has that crack resistance is high, rigidity is large, be out of shape little feature, and its percolation-proof, gear soil, load-bearing and shock resistance are excellent.
Described dividing plate is wood based panel or plastic plate.
A construction method for large area prefabricated prestressed underground continuous wall, comprises the following steps successively:
1), trenching construction: adopt the grooving of grooving equipment construction; Grooving equipment can be rotary cutting Multi-drill bit, guide plate grab bucket or Churn drill etc.
2), dividing plate and prefabricated prestressing force body of wall are laid with fixing: dividing plate is vertically laid near peripheral soil layer, again prefabricated prestressing force body of wall is vertically laid near dividing plate, then fixing anchor bar is squeezed in the sleeve pipe on preformed hole, it is inner that the swollen expansion termination of fixing anchor bar head end enters peripheral soil layer through sleeve pipe, thereby be fixed, construction of diaphragm wall is complete.Construction method of the present invention is simplified greatly than prior art, and be applicable to large-area wall construction, greatly facilitating wall section joint processes, the problems such as structural instability of having avoided wallette body wall section joint too much to cause, make the structure of diaphragm wall more safe and reliable, meet construction needs and the functional requirement of increasing underground construction.
The invention provides a kind of large area prefabricated prestressed underground continuous wall, simple in structure, greatly simplify work progress, can guarantee good integral rigidity and non-deformability again simultaneously, there is good percolation-proof, gear soil, load-bearing and shock resistance.The present invention also provides the construction method of this kind of large area prefabricated prestressed underground continuous wall, in construction safety, efficiency, duration, cost, quality and field control, has obtained significant economic benefit and resultant effect.In building operations technical field of structures, will have a good application prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of large area prefabricated prestressed underground continuous wall of embodiment.
In figure: the peripheral soil layer of 1-; 2-dividing plate; 21-through hole; 3-prefabricated prestressing force body of wall; 31-preformed hole; 32-sleeve pipe; 33-rinforcement bar; 4-fixing anchor bar; 41-is swollen expansion termination.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further described in detail.
Embodiment
As shown in Figure 1, a kind of large area prefabricated prestressed underground continuous wall, comprise prefabricated prestressing force body of wall 3, described prefabricated prestressing force body of wall 3 is fixed on peripheral soil layer 1 by fixing anchor bar 4, described fixing anchor bar 4 head ends are provided with swollen expansion termination 41, between described prefabricated prestressing force body of wall 3 and described peripheral soil layer 1, be provided with dividing plate 2, on described prefabricated prestressing force body of wall 3, be distributed with a plurality of preformed holes 31, on described preformed hole 31 inwalls, cover has sleeve pipe 32, described fixing anchor bar 4 is through described sleeve pipe 32, the described swollen expansion termination 41 of its head end is fastened in described peripheral soil layer 1.
Described prefabricated prestressing force body of wall 3 lower ends are provided with rinforcement bar 33.
On described dividing plate 2, be distributed with the through hole 21 corresponding with described preformed hole 31, described sleeve pipe 32 penetrates described preformed hole 31 and described through hole 21.
Described sleeve pipe 32 is made by PA6.
Described prefabricated prestressing force body of wall 3 is post-tensioned prestressing wall.
Described dividing plate 2 is wood based panel or plastic plate.
The construction method of this kind of large area prefabricated prestressed underground continuous wall, comprises the following steps successively:
1), trenching construction: adopt the grooving of grooving equipment construction;
2), dividing plate 2 is laid with fixing with prefabricated prestressing force body of wall 3: dividing plate 2 is vertically laid near peripheral soil layer 1, again prefabricated prestressing force body of wall 3 is vertically laid near dividing plate 2, then fixing anchor bar 4 is squeezed in the sleeve pipe 32 on preformed hole 31, the swollen expansion termination 41 of fixing anchor bar 4 head ends enters peripheral soil layer 1 inside through sleeve pipe 32, thereby be fixed, construction of diaphragm wall is complete.
With way of example, describe the present invention above, but the invention is not restricted to above-mentioned specific embodiment, all any improvement of doing based on the present invention or modification all belong to the protection domain of the claims in the present invention.
Claims (7)
1. a large area prefabricated prestressed underground continuous wall, it is characterized in that: comprise prefabricated prestressing force body of wall (3), described prefabricated prestressing force body of wall (3) is fixed on peripheral soil layer (1) by fixing anchor bar (4), described fixing anchor bar (4) head end is provided with swollen expansion termination (41), between described prefabricated prestressing force body of wall (3) and described peripheral soil layer (1), be provided with dividing plate (2), on described prefabricated prestressing force body of wall (3), be distributed with a plurality of preformed holes (31), on described preformed hole (31) inwall, cover has sleeve pipe (32), described fixing anchor bar (4) is through described sleeve pipe (32), the described swollen expansion termination (41) of its head end is fastened in described peripheral soil layer (1).
2. a kind of large area prefabricated prestressed underground continuous wall according to claim 1, is characterized in that: described prefabricated prestressing force body of wall (3) lower end is provided with rinforcement bar (33).
3. a kind of large area prefabricated prestressed underground continuous wall according to claim 1, it is characterized in that: on described dividing plate (2), be distributed with the through hole (21) corresponding with described preformed hole (31), described sleeve pipe (32) penetrates described preformed hole (31) and described through hole (21).
4. a kind of large area prefabricated prestressed underground continuous wall according to claim 3, is characterized in that: described sleeve pipe (32) is made by PA6.
5. a kind of large area prefabricated prestressed underground continuous wall according to claim 1, is characterized in that: described prefabricated prestressing force body of wall (3) is post-tensioned prestressing wall.
6. a kind of large area prefabricated prestressed underground continuous wall according to claim 1, is characterized in that: described dividing plate (2) is wood based panel or plastic plate.
7. the construction method of a kind of large area prefabricated prestressed underground continuous wall claimed in claim 1, is characterized in that: comprises the following steps successively,
1), trenching construction: adopt the grooving of grooving equipment construction;
2), dividing plate (2) is laid with fixing with prefabricated prestressing force body of wall (3): dividing plate (2) is vertically laid near peripheral soil layer (1), again prefabricated prestressing force body of wall (3) is vertically laid near dividing plate (2), then fixing anchor bar (4) is squeezed in the sleeve pipe (32) on preformed hole (31), the swollen expansion termination (41) of fixing anchor bar (4) head end enters peripheral soil layer (1) inside through sleeve pipe (32), thereby be fixed, construction of diaphragm wall is complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310340017.7A CN104153346A (en) | 2013-08-05 | 2013-08-05 | Large-scale prefabricated prestressed underground continuous wall |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310340017.7A CN104153346A (en) | 2013-08-05 | 2013-08-05 | Large-scale prefabricated prestressed underground continuous wall |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332370A (en) * | 2015-10-29 | 2016-02-17 | 广东省基础工程集团有限公司 | Fabricated underground continuous wall unit and construction method thereof |
| CN110318389A (en) * | 2019-06-24 | 2019-10-11 | 中国路桥工程有限责任公司 | Non- embedding dike board bottom portion grouting method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06116942A (en) * | 1992-08-20 | 1994-04-26 | Kajima Corp | Construction method of critical sheathing wall |
| JP2000064289A (en) * | 1998-08-24 | 2000-02-29 | Okabe Co Ltd | Concrete-embedded joint and reinforcing method of embankment having wall surface |
| CN101748749A (en) * | 2009-12-16 | 2010-06-23 | 中煤第三建设（集团）有限责任公司 | Prefabricated prestressing diaphragm wall and construction method thereof |
| CN201567566U (en) * | 2009-12-16 | 2010-09-01 | 中煤第三建设（集团）有限责任公司 | Precast assembled prestress underground continuous wall |
| CN202850192U (en) * | 2012-08-24 | 2013-04-03 | 初明进 | Prefabricated concrete hollow member |
-
2013
- 2013-08-05 CN CN201310340017.7A patent/CN104153346A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06116942A (en) * | 1992-08-20 | 1994-04-26 | Kajima Corp | Construction method of critical sheathing wall |
| JP2000064289A (en) * | 1998-08-24 | 2000-02-29 | Okabe Co Ltd | Concrete-embedded joint and reinforcing method of embankment having wall surface |
| CN101748749A (en) * | 2009-12-16 | 2010-06-23 | 中煤第三建设（集团）有限责任公司 | Prefabricated prestressing diaphragm wall and construction method thereof |
| CN201567566U (en) * | 2009-12-16 | 2010-09-01 | 中煤第三建设（集团）有限责任公司 | Precast assembled prestress underground continuous wall |
| CN202850192U (en) * | 2012-08-24 | 2013-04-03 | 初明进 | Prefabricated concrete hollow member |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332370A (en) * | 2015-10-29 | 2016-02-17 | 广东省基础工程集团有限公司 | Fabricated underground continuous wall unit and construction method thereof |
| CN105332370B (en) * | 2015-10-29 | 2017-08-29 | 广东省基础工程集团有限公司 | A kind of assembled underground continuous wall unit and its construction method |
| CN110318389A (en) * | 2019-06-24 | 2019-10-11 | 中国路桥工程有限责任公司 | Non- embedding dike board bottom portion grouting method |
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Application publication date: 20141119 |