CN103924581A - Underground continuous wall with prefabricated concrete-filled steel tube composite structure and method for constructing underground continuous wall - Google Patents
Underground continuous wall with prefabricated concrete-filled steel tube composite structure and method for constructing underground continuous wall Download PDFInfo
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- CN103924581A CN103924581A CN201410114928.2A CN201410114928A CN103924581A CN 103924581 A CN103924581 A CN 103924581A CN 201410114928 A CN201410114928 A CN 201410114928A CN 103924581 A CN103924581 A CN 103924581A
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Abstract
The invention discloses an underground continuous wall with a prefabricated concrete-filled steel tube composite structure and a method for constructing the underground continuous wall. The underground continuous wall comprises a plurality of prefabricated connecting wall sections. The prefabricated connecting wall sections are vertically sequentially connected with one another and comprise concrete-filled steel tube composite members and external cast-in-place box-type concrete structures, rectangular steel tubes are arranged on the outsides of the concrete-filled steel tube composite members, concrete is arranged inside each concrete-filled steel tube composite member, the steel tubes are provided with binding bars at certain intervals, the binding bars are made of high-strength bolts, the protruded concrete-filled steel tube composite members of the wall sections are connected with one another by bolts, high-strength non-shrink grouting materials are poured in joints to form bond zones, prestressed steel strands are arranged inside the box-type concrete structures, slits are formed in the middle or two sides of each end of each connecting wall section, connecting steel plates are embedded among slit sections, slurry is poured in the wall sections after the wall sections are washed, and then the wall sections are integrally connected with one another. The underground continuous wall with the concrete-filled steel tube composite structure and the method have the advantages of good mechanical property, leakage resistance, reliability in connection, capability of implementing industrial production, and the like.
Description
Technical field
The present invention relates to a kind of diaphragm wall design and construction field of architecture Foundation Pit Engineering, particularly the construction method of a kind of Prefabricated concrete-filled steel tube combining structure diaphragm wall and this diaphragm wall.
Background technology
Underground continuous wall construction technique originates from Europe, and 50～sixties of 20th century, this technology was promoted in western developed country, the former Soviet Union and Japan.Within 1958, China uses this technology to build dam impervious wall, and the mid-1970s technique promotes the use of the industries such as building, colliery and municipal administration.Diaphragm wall is because its rigidity is large, and having advantages of affects littlely on foundation ditch surrounding soil and works, and the outer wall of basement that can work as retaining wall or agent structure uses.
What diaphragm wall used at present is all reinforced concrete structure.Comprise cast-in-place diaphragm wall in (1) groove section, this construction of diaphragm wall is convenient, generally forms overall space enclosing structure with concrete or steel structure support.But also there is following shortcoming in this body of wall: construction quality is affected greatly by soil layer, contracting wall easily occurs in bad ground, cave in, leak the quality problems such as muscle, wall width thickness deficiency and " bulge "; Joint is prone to the quality problems such as seepage flow and folder silt; The diaphragm wall of folder silt there will be the quality problems such as overboard, lateral deformation is large at excavation of foundation pit.(2) prefabricated diaphragm wall, this body of wall is first to make on the ground, after grooving, puts into groove by under body of wall.This wall is low to the quality requirement of grooving, has avoided the defect of wall quality.Can industrialized construction in order to realize diaphragm wall, also there is researcher to propose the steel concrete diaphragm wall of prefabrication and assembly construction, but the intensity of these walls at wall connecting place is low and easily occur the problem of ground water seepage tending to improve construction cost for fear of Seepage problems.
Summary of the invention
Technical problem: the technical problem to be solved in the present invention is for appeal the deficiencies in the prior art, provides that a kind of mechanical property is good, anti-leakage, connection reliable and Prefabricated concrete-filled steel tube combining structure diaphragm wall and construction method thereof that can suitability for industrialized production.
Summary of the invention: for solving the problems of the technologies described above, the invention provides a kind of Prefabricated concrete-filled steel tube combining structure diaphragm wall, this diaphragm wall comprises the some prefabricated connection wall section connecting successively along vertical;
Described connection wall section comprises the combination member of steel tube concrete of hollow and casts in the concrete structure of combination member of steel tube concrete outside, described combination member of steel tube concrete internal package concrete, combination member of steel tube concrete inner surface arranges binding bar at a certain distance, and described concrete structure inside arranges prestress wire;
Described connection wall section every end middle part or both sides arrange the line of rabbet joint, imbed junction steel plate between the line of rabbet joint, rinse post-grouting, make to assemble wall section and are linked to be entirety;
Described junction steel plate and wall section equal in length, junction steel plate sectional dimension is slightly less than the line of rabbet joint;
The intersegmental use bolt of wall connects the combination member of steel tube concrete protruding, and connecting portion perfusion High Strength Non-shrinking Filling Material generates land.
Preferably, described combination member of steel tube concrete is rectangular steel pipe.
Preferably, binding bar is made of high-strength bolt.
The present invention also provides a kind of construction method of Prefabricated concrete-filled steel tube combining structure diaphragm wall, and the method comprises the steps:
Step 1: prefabricated band binding bar steel tube-concrete composite structure underground continuous wall section and junction steel plate;
Step 2: the steel tube-concrete composite structure underground continuous wall section of joint connection in site prefabricated band binding bar;
Step 3: the excavation position of prefabricated diaphragm wall is positioned and carries out trenching construction;
Step 4: the belt restraining pull bar steel tube-concrete composite structure underground continuous wall section to prefabrication and assembly construction applies prestressing force;
Step 5: hoisting prefabricated assembling steel tube-concrete composite structure underground continuous wall section and junction steel plate;
Step 6: the cleaning line of rabbet joint and joints cement mortar.
Preferably, the concrete grammar of step 1 is: at the scene or the first Prefabricated concrete-filled steel tube combined member of factory, and binding bar is set at a certain distance, then build box concrete structure in combination member of steel tube concrete outside, Prefabricated composite structure underground continuous wall section can according to the restriction of physical transport capacity and Lifting Capacity be divided into two sections or three sections prefabricated, groove section end arranges the line of rabbet joint; Make shearing resistance junction steel plate according to designing requirement.
Preferably, the concrete grammar of step 2 is: Prefabricated composite structural wall section is used high-strength bolt to connect the combination member of steel tube concrete protruding, and then at connecting portion formwork, fills this bonding pad with High Strength Non-shrinking Filling Material; Ensure to lift again after grouting material land intensity reaches designing requirement.
Preferably, step 3 concrete grammar is: first determine underground continuous wall groove segment framing position, Yi Caoduan center, as the excavation centre of location, is excavated groove and builds guide wall of underground continuous wall in predetermined diaphragm wall position; Again groove section is carried out to trenching construction, be excavated to projected depth and remove bottom slagging, when box cut section, use swell soil to carry out mud off, in grooving process, detected a quality of mud fluid every 2 hours, and change in time underproof mud.
Preferably, step 4 concrete grammar is: before applying prestressing force, ensure that land grouting material intensity is not less than the intensity of box concrete structure; After prestress application completes, the termination of prestressed anchor is sealed with concrete.
Preferably, the lifting step that step 5 is concrete: prefabrication and assembly construction combining structure underground continuous wall section is hung in the geosyncline of slurry coat method with large-scale loop wheel machine, hang at assigned address by position and the absolute altitude of design; Wall section longitudinally hang successively prefabrication and assembly construction wall section, then junction steel plate is hung to the line of rabbet joint of groove section end.
Preferably, step 6 concrete grammar is: the line of rabbet joint of wall section is carried out pouring into the cement mortar of adding expansion agent after clear water flushing.
Beneficial effect: compared with prior art, the present invention has following characteristics:
1) Prefabricated concrete-filled steel tube combining structure diaphragm wall of the present invention adopts sectional making, can realize suitability for industrialized production, easily ensures the quality of body of wall when improving speed of application.
2) Prefabricated concrete-filled steel tube combining structure diaphragm wall of the present invention is made with steel pipe and concrete bi-material, has given full play to the advantage that steel tensile strength is large, plasticity good and concrete anti-compression performance is good.This combining structure diaphragm wall has that lateral rigidity is large, compressive strength is high, cracking resistance is good and the feature such as ductility is good.
3) steel pipe makes concrete single load bearing become three received strength to concrete effect of contraction, and concrete strength is enhanced about more than once, and has improved the concrete ductility of the part that is tied simultaneously, thereby has improved intensity and the ductility of diaphragm wall; Binding bar is set on combination member of steel tube concrete, and binding bar reduces the distortion of steel pipe walls to the drawknot effect of steel pipe walls, thereby has strengthened stability and the ductility of steel pipe walls; Cast-in-place box concrete structure has avoided steel pipe to expose, and has improved the endurance quality of whole continuous underground wall structure.
4) Prefabricated concrete-filled steel tube combining structure diaphragm wall of the present invention uses high-strength bolt to connect at wall section connecting portion, increase substantially the intersegmental switching performance of wall, connecting portion formwork after-pouring high strength contraction-free grouting concrete, has solved the difficult problem of fabricate block connection wall section easy to leak.
5) Prefabricated concrete-filled steel tube combining structure diaphragm wall of the present invention arranges prestress wire in box concrete structure inside, has improved bending rigidity, cracking resistance and the endurance quality of diaphragm wall.The prestressed bending rigidity that has improved diaphragm wall that applies, has postponed concrete cracking time.
Brief description of the drawings
Fig. 1 is the positive elevational schematic view of belt restraining pull bar combination member of steel tube concrete of the present invention;
Fig. 2 is the positive elevational schematic view of new composite structure diaphragm wall typical construction wall section of the present invention;
Fig. 3 is the positive elevational schematic view of new composite structure underground continuous wall section connecting portion of the present invention;
Fig. 4 is the side schematic view of new composite structure underground continuous wall section connecting portion of the present invention;
Fig. 5 is that new composite structure underground continuous wall section of the present invention completes the positive elevational schematic view of building position;
Fig. 6 is the schematic diagram of new composite structure underground continuous wall section junction steel plate of the present invention;
Fig. 7 is the positive elevational schematic view that the longitudinal wall segment standard of new composite structure diaphragm wall of the present invention connects;
In figure:
1, connection wall section 2, combination member of steel tube concrete 3, box concrete structure 4, rectangular steel pipe 5, binding bar 6, splicing steel plate 7, land 8, prestress wire 9, the line of rabbet joint 10, junction steel plate 11, assemble wall section
Detailed description of the invention
Below in conjunction with drawings and the embodiments, patent of the present invention is described in further detail:
Prefabricated concrete-filled steel tube combining structure diaphragm wall of the present invention is: comprise the some prefabricated connection wall section 1 connecting successively along vertical, described connection wall section comprises combination member of steel tube concrete 2 and outside cast-in-place box concrete structure 3, described combination member of steel tube concrete outside is rectangular steel pipe 4, internal package concrete, steel pipe arranges binding bar 5 at a certain distance, binding bar is made of high-strength bolt, the intersegmental use bolt of wall connects the combination member of steel tube concrete protruding, connecting portion perfusion High Strength Non-shrinking Filling Material generates land 7, described box concrete structure inside arranges prestress wire 8, described connection wall section every end middle part or both sides arrange the line of rabbet joint 9, the intersegmental junction steel plate 10 that imbeds of groove, rinse post-grouting, make to assemble wall section 11 and be linked to be entirety.Described junction steel plate and wall section equal in length, junction steel plate 10 sectional dimensions are slightly less than the line of rabbet joint.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, Prefabricated concrete-filled steel tube combining structure diaphragm wall of the present invention is first with high-strength bolt, dry wall section to be connected into single width wall section, then makes wall section be linked to be complete diaphragm wall with junction steel plate.
Prefabricated concrete-filled steel tube combining structure diaphragm wall of the present invention adopts sectional making, can realize suitability for industrialized production, has improved speed of application; Give full play to the advantage of steel and concrete bi-material, made this combining structure diaphragm wall have that lateral rigidity is large, compressive strength is high, cracking resistance is good and the feature such as ductility is good; Take full advantage of the effect of contraction of steel pipe and binding bar, improved respectively the mechanical property of concrete and steel pipe walls; Use high-strength bolt connection wall section, increased substantially the switching performance of wall section, connecting portion is built high strength contraction-free grouting concrete again, has well solved a difficult problem for fabricate block connection wall section easy to leak; The prestressed bending rigidity, cracking resistance and the endurance quality that have improved body of wall of applying of diaphragm wall.
The Specific construction process of structure of the present invention comprises the steps:
(1) prefabricated band binding bar steel tube-concrete composite structure underground continuous wall section and junction steel plate.At the scene or the first Prefabricated concrete-filled steel tube combined member of factory, and binding bar is set at a certain distance, then build box concrete structure in combination member of steel tube concrete outside, Prefabricated composite structure underground continuous wall section can according to the restriction of physical transport capacity and Lifting Capacity be divided into two sections or three sections prefabricated, groove section end arranges the line of rabbet joint; Make shearing resistance junction steel plate according to designing requirement.
(2) the steel tube-concrete composite structure underground continuous wall section of joint connection in site prefabricated band binding bar.Prefabricated composite structural wall section is used high-strength bolt to connect the combination member of steel tube concrete protruding, and then at connecting portion formwork, fills this bonding pad with High Strength Non-shrinking Filling Material.After reaching designing requirement, the intensity of guarantee grouting material lifts again.
(3) the excavation position of prefabricated diaphragm wall is positioned and trenching construction.First determine underground continuous wall groove segment framing position, Yi Caoduan center, as the excavation centre of location, is excavated groove and builds guide wall of underground continuous wall in predetermined diaphragm wall position; Again groove section is carried out to trenching construction, be excavated to projected depth and remove bottom slagging, when box cut section, use swell soil to carry out mud off, in grooving process, detected a quality of mud fluid every 2 hours, and change in time underproof mud.
(4) the belt restraining pull bar steel tube-concrete composite structure underground continuous wall section of prefabrication and assembly construction is applied to prestressing force.Before applying prestressing force, ensure that land grouting material intensity is not less than the intensity of box concrete structure.After prestress application completes, the termination of prestressed anchor is sealed with concrete.
(5) hoisting prefabricated assembling steel tube-concrete composite structure underground continuous wall section and junction steel plate.Concrete lifting step: prefabrication and assembly construction combining structure underground continuous wall section is hung in the geosyncline of slurry coat method with large-scale loop wheel machine, hang into assigned address by position and the absolute altitude of (three) design, wall section longitudinally hang successively prefabrication and assembly construction wall section, then junction steel plate is hung to the line of rabbet joint of groove section end.
(6) the cleaning line of rabbet joint and joints cement mortar.The line of rabbet joint of wall section is carried out pouring into the cement mortar of adding expansion agent after clear water flushing.
Should understand above-described embodiment only for the detailed description of the invention of technical solution of the present invention is described, limit the scope of the invention and be not used in.After having read the present invention, amendment and the replacement of those skilled in the art to various equivalents of the present invention all falls within the protection domain that the application's claim limits.
Claims (10)
1. a Prefabricated concrete-filled steel tube combining structure diaphragm wall, is characterized in that, this diaphragm wall comprises the some prefabricated connection wall section (1) connecting successively along vertical;
Described connection wall section (1) comprises combination member of steel tube concrete (2) and casts in the outside concrete structure (3) of combination member of steel tube concrete (2), described combination member of steel tube concrete (2) internal package concrete, combination member of steel tube concrete (2) inner surface arranges binding bar (5) at a certain distance, and described concrete structure (3) inside arranges prestress wire (8);
Described connection wall section (1) every end middle part or both sides arrange the line of rabbet joint (9), imbed junction steel plate (10) between the line of rabbet joint (9), rinse post-grouting, make to assemble wall section (11) and are linked to be entirety;
Described junction steel plate (10) is equal in length with wall section (1), and junction steel plate (10) sectional dimension is slightly less than the line of rabbet joint;
Between wall section (1), use bolt to connect the combination member of steel tube concrete (2) protruding, connecting portion perfusion High Strength Non-shrinking Filling Material generates land (7).
2. Prefabricated concrete-filled steel tube combining structure diaphragm wall according to claim 1, is characterized in that, described combination member of steel tube concrete (2) is rectangular steel pipe.
3. Prefabricated concrete-filled steel tube combining structure diaphragm wall according to claim 1, is characterized in that, binding bar (5) is made of high-strength bolt.
4. a construction method for Prefabricated concrete-filled steel tube combining structure diaphragm wall, is characterized in that, the method comprises the steps:
Step 1: prefabricated band binding bar steel tube-concrete composite structure underground continuous wall section and junction steel plate;
Step 2: the steel tube-concrete composite structure underground continuous wall section of joint connection in site prefabricated band binding bar;
Step 3: the excavation position of prefabricated diaphragm wall is positioned and carries out trenching construction;
Step 4: the belt restraining pull bar steel tube-concrete composite structure underground continuous wall section to prefabrication and assembly construction applies prestressing force;
Step 5: hoisting prefabricated assembling steel tube-concrete composite structure underground continuous wall section and junction steel plate;
Step 6: the cleaning line of rabbet joint and joints cement mortar.
5. the construction method of Prefabricated concrete-filled steel tube combining structure diaphragm wall according to claim 4, it is characterized in that, the concrete grammar of step 1 is: at the scene or the first Prefabricated concrete-filled steel tube combined member of factory, and binding bar is set at a certain distance, then build box concrete structure in combination member of steel tube concrete outside, Prefabricated composite structure underground continuous wall section can according to the restriction of physical transport capacity and Lifting Capacity be divided into two sections or three sections prefabricated, groove section end arranges the line of rabbet joint; Make shearing resistance junction steel plate according to designing requirement.
6. the construction method of Prefabricated concrete-filled steel tube combining structure diaphragm wall according to claim 4, it is characterized in that, the concrete grammar of step 2 is: Prefabricated composite structural wall section is used high-strength bolt to connect the combination member of steel tube concrete protruding, then at connecting portion formwork, fill this bonding pad with High Strength Non-shrinking Filling Material; Ensure to lift again after grouting material land intensity reaches designing requirement.
7. the construction method of Prefabricated concrete-filled steel tube combining structure diaphragm wall according to claim 4, it is characterized in that, step 3 concrete grammar is: first determine underground continuous wall groove segment framing position, Yi Caoduan center, as the excavation centre of location, is excavated groove and builds guide wall of underground continuous wall in predetermined diaphragm wall position; Again groove section is carried out to trenching construction, be excavated to projected depth and remove bottom slagging, when box cut section, use swell soil to carry out mud off, in grooving process, detected a quality of mud fluid every 2 hours, and change in time underproof mud.
8. the construction method of Prefabricated concrete-filled steel tube combining structure diaphragm wall according to claim 4, is characterized in that, step 4 concrete grammar is: before applying prestressing force, ensure that land grouting material intensity is not less than the intensity of box concrete structure; After prestress application completes, the termination of prestressed anchor is sealed with concrete.
9. the construction method of Prefabricated concrete-filled steel tube combining structure diaphragm wall according to claim 4, it is characterized in that, the lifting step that step 5 is concrete: prefabrication and assembly construction combining structure underground continuous wall section is hung in the geosyncline of slurry coat method with large-scale loop wheel machine, hang at assigned address by position and the absolute altitude of design; Wall section longitudinally hang successively prefabrication and assembly construction wall section, then junction steel plate is hung to the line of rabbet joint of groove section end.
10. the construction method of Prefabricated concrete-filled steel tube combining structure diaphragm wall according to claim 4, is characterized in that, step 6 concrete grammar is: the line of rabbet joint of wall section is carried out pouring into the cement mortar of adding expansion agent after clear water flushing.
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Cited By (5)
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| CN105421338A (en) * | 2015-11-27 | 2016-03-23 | 上海市政工程设计研究总院（集团）有限公司 | Splicing structure for vertical connection of prefabricated underground diaphragm walls |
| CN108240713A (en) * | 2017-12-11 | 2018-07-03 | 三峡大学 | A kind of geothermal collecting apparatus in diaphram wall |
| CN108487636A (en) * | 2018-04-26 | 2018-09-04 | 河南绿建建筑科技有限公司 | Prefabrication steel concrete compound shear wall assembled-type house construction method |
| CN108571169A (en) * | 2018-06-15 | 2018-09-25 | 河南绿建建筑科技有限公司 | Prefabrication steel concrete overlapped shear wall assembled architecture construction method |
| CN114808696A (en) * | 2022-05-07 | 2022-07-29 | 广西欣港交通投资有限公司 | Prefabricated and cast-in-place combined anchorage foundation enclosure structure and construction method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105421338A (en) * | 2015-11-27 | 2016-03-23 | 上海市政工程设计研究总院（集团）有限公司 | Splicing structure for vertical connection of prefabricated underground diaphragm walls |
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| CN108571169A (en) * | 2018-06-15 | 2018-09-25 | 河南绿建建筑科技有限公司 | Prefabrication steel concrete overlapped shear wall assembled architecture construction method |
| CN114808696A (en) * | 2022-05-07 | 2022-07-29 | 广西欣港交通投资有限公司 | Prefabricated and cast-in-place combined anchorage foundation enclosure structure and construction method |
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| CN103924581B (en) | 2015-10-07 |
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