CN103334422A - Assembled embedded type prefabricated hollow underground continuous wall and construction method thereof - Google Patents
Assembled embedded type prefabricated hollow underground continuous wall and construction method thereof Download PDFInfo
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- CN103334422A CN103334422A CN2013102588210A CN201310258821A CN103334422A CN 103334422 A CN103334422 A CN 103334422A CN 2013102588210 A CN2013102588210 A CN 2013102588210A CN 201310258821 A CN201310258821 A CN 201310258821A CN 103334422 A CN103334422 A CN 103334422A
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Abstract
The invention relates to an assembled embedded type prefabricated hollow underground continuous wall. The assembled embedded type prefabricated hollow underground continuous wall is formed by splicing a plurality of wall body units; each wall body unit comprises a wall body unit body, an upper connecting assembly and a lower connecting assembly; the wall body unit body is a hollow block body; the left side face of the wall body unit body is provided with a tenon; the transverse end surface of the tenon is a rectangle provided with an externally convex side wall, and the right side face of the tenon is a groove; the upper connecting assembly is formed by a right side opening groove body which is the same as the transverse end surface of the wall body unit body, a base plate and two L-type connecting blocks; the opening groove body is encircled by a connecting steel plate with a keyhole; an opening of the opening groove body is in inserting connection with the two L-type connecting blocks; the height of each L-type connecting block is half that of the connecting steel plate; the base plate is arranged at the top surface of the connecting steel plate, and is projected out of the outer edge of the connecting steel plate; wall body main ribs are welded on the base plate; the structures and shapes of the upper connecting assembly and the lower connecting assembly are completely the same; and the up-and-down splicing of the wall body unit is realized through bolts after the upper connecting assembly and the lower connecting assembly are in inserting connection. The assembled embedded type prefabricated hollow underground continuous wall has the advantages of shortening the construction period, improving the construction quality, reducing the probability of construction accidents, and the like.
Description
Technical field
The present invention relates to a kind of diaphragm wall and job practices thereof, particularly a kind of prefabricated diaphragm wall and job practices thereof.
Background technology
Along with improving constantly of rapid development of economy and the urbanization level, urban issues becomes increasingly conspicuous, as densely populated, congested in traffic, resource exhaustion, can utilize area deficiency, land price surging etc.Utilizing underground space configuration urban infrastructure is the effective way that fundamentally solves the urban development problem.What at present, underground space space enclosing structure was the most frequently used is diaphragm wall.
And the form of structure of diaphragm wall is generally the Cast-in-situs type diaphragm wall, because the Cast-in-situs type diaphragm wall pours under water, inevitably has following defective and disadvantage:
One, waits for that concrete setting causes claim for eot
Cast-in-place diaphragm wall is as underground large-sized concrete supporting and protection structure, soil excavation can further be constructed after need waiting for the diaphragm wall concrete setting and reaching certain intensity, and the urban underground space construction requirements is tried one's best the reduction of erection time, and cast-in-place ground-connecting-wall does not obviously meet the rapid construction requirement that urban underground space is built.
Quality is difficult for guaranteeing when two, building
During the underwater casting of ground-connecting-wall, concrete presss from both sides mud easily, is stained with mud during descending reinforcing cage on the reinforcing bar, reduces the concrete reinforcement bond stress, wall body difficult quality guarantee, and easily cause the random infiltration of metope, this is a cast-in-place ground-connecting-wall insurmountable difficult problem always.
Three, degree of plainness for wall surface is wayward in the soft stratum
When soil layer weakness or layer of sand, if mud conditioning is improper, there is the problem of caving in cell wall, and commonly metope has the evagination phenomenon, and degree of plainness for wall surface is difficult to problems such as control.
Summary of the invention
The purpose of this invention is to provide a kind of flush type precast hollow diaphragm wall and job practices thereof of assembling, it is long to solve the existing cast-in-place construction of diaphragm wall cycle, the technical problem that construction quality can't guarantee.
For achieving the above object, the present invention adopts following technical scheme:
A kind of flush type precast hollow diaphragm wall that assembles, be spliced by several wall elements, described wall element comprises the wall element body, last coupling assembling and following coupling assembling, described wall element body is cavity block, its left surface has tenon, the horizontal end face of described tenon is the rectangle of sidewall evagination, right flank is groove, described tenon and groove topography are mated fully, both peg graft and form the tongue and groove connection, the described coupling assembling of going up is by the right openings cell body identical with the horizontal end face of wall element body, backing plate and two L type contiguous blocks are formed, described opening cell body is surrounded by the connection steel plate in strap bolt hole, its opening part and the socket connection of two L type contiguous blocks, the height of described L type contiguous block is half of connection steel plate height, described backing plate is arranged on and connects the steel plate end face, and the outstanding steel plate outer that connects, be welded with body of wall master muscle on it, described coupling assembling down and last coupling assembling structure and shape are identical, the opening cell body of following coupling assembling is littler than the opening cell body width of last coupling assembling, realizes the splicing up and down of wall element after both peg graft by bolt.
Be arranged at intervals with floor between the described connection steel plate.
The equal correspondence in the end face of described wall element body and bottom surface has loss of weight double blinding hole.
Described tenon is close to the waterproof strip of paper used for sealing that its periphery is provided with water-swellable.
Described wall element body side is provided with Grouting Pipe near bottom or tip position correspondence.
Described wall element body side is preset with hoisting ring.
The described flush type precast hollow construction of continuous concrete wall method of assembling, it is characterized in that: step is as follows:
The first, use template precast wall body cell body and coupling assembling at precasting yard, and the steel member that exposes is done antirust processing;
The second, prefabricated wall element body and the coupling assembling of finishing is transported to the construction plant;
The 3rd, use grab bucket or other groovers fluting, slotting length and width are slightly larger than single width ground-connecting-wall length and width;
The 4th, use crane lift by hoisting ring first group of wall element body and coupling assembling formation wall element and transfer to groove, transfer and from groove, extract mud in the process simultaneously out and guarantee certain mud level, until the steel member that hoisting ring and ground is default is connected by steel pipe finish after, the relieving crane rope is connected with hoisting ring;
The 5th, the use crane lifts the wall element of second group of wall element body and coupling assembling by hoisting ring and transfers to groove, transfer in the process and from groove, to extract mud simultaneously out and to guarantee certain mud level, insert in the coupling assembling of first group of wall element until the coupling assembling of second group of wall element;
The 6th, connect the Grouting Pipe of first group of wall element and second group of wall element, and use high-strength bolt to fix being connected steel plate and welding L type contiguous block up and down of first group of wall element and second group of wall element, implement waterproof measure in the junction;
The 7th, after the junction construction finishes, crane will connect into first group of whole wall element and the first width of cloth ground-connecting-wall of conduct of second group of wall element is transferred until design height, transfers in the process to keep prefabricated ground-connecting-wall verticality by the spirit level that is fixed on the prefabricated ground-connecting-wall;
The 8th, use grab bucket or other groovers to be close to first width of cloth ground-connecting-wall fluting in first width of cloth ground-connecting-wall groove direction, slotting length and width are slightly larger than length and the width of single width ground-connecting-wall;
The 9th, use crane to lift the 3rd group of wall element by hoisting ring, the tenon of the 3rd group of wall element is inserted in the groove of first group of wall element and transfer, and repeat above fourth, fifth, six, seven steps and finish the construction of second width of cloth ground-connecting-wall;
The tenth, after construction of diaphragm wall finishes and body of wall periphery disturbance soil strength recovers, implement body of wall bottom slip casting by Grouting Pipe;
The 11, repeat above step, until finishing the ground-connecting-wall integral construction.
Compared with prior art the present invention has following characteristics and beneficial effect:
(1) the present invention in level when connecting, for tongue and groove connects, groove and tenon agree with fully, realize seamless link, guarantee the safety of jointing, simultaneously, use the measure of waterproof strip of paper used for sealing joint at link position, guarantee the reliability of joint waterproofing, reduce the prominent mud accident occurrence probability of gushing water in the Excavation Process.Can effectively improve construction of diaphragm wall efficient, reduce the duration of a project.
(2) wall element is set to hollowly among the present invention, the body of wall lengthways main steel bar is arranged on the backing plate of coupling assembling, thereby reduces the construction hoisting difficulty, improves efficiency of construction.
(3) prefabricated ground-connecting-wall wall panel element and coupling assembling described in the present invention all can be realized the wall leveling degree is reliably controlled, thereby promote workmanship prefabricated the processing of factory's batch.
(4) various ground-connecting-wall flat shapes can realize by the working special-shaped ground-connecting-wall that is prefabricated in the factory, and do not need the measure of other design specialized groove end joint, and the scope of application is extremely wide.
(5) the present invention is the prefabricated diaphragm wall of flush type, can strengthen the body of wall vertical bearing capacity by measures such as bottom slip castings, can be used as underground space enclosed structure and basement interior wall and uses, and reaches the application target of two walls unification.
(6) by loss of weight double blinding hole is set, reduce the weight of prefabricated diaphragm wall, reduce concrete use amount.
The present invention can be widely used in underground exterior-protected structure or basement interior wall.
Description of drawings
The present invention will be further described in detail below in conjunction with accompanying drawing.
Fig. 1 is the body of wall connection diagram.
Fig. 2 is Fig. 1 vertical view.
Fig. 3 is the schematic cross-section that the waterproof strip of paper used for sealing is enclosed.
Fig. 4 is linkage unit schematic diagram on the body of wall.
Fig. 5 is linkage unit schematic diagram under the body of wall.
Fig. 6 is the coupling assembling detail drawing.
Reference numeral: 1-wall element body, 2-tenon, 3-groove, 4-keyhole, 5-loss of weight double blinding hole, 6-body of wall master muscle, 7-waterproof strip of paper used for sealing, 8-hoisting ring, 9-connect steel plate, 10-floor, 11-backing plate, 12-L type contiguous block, 13-Grouting Pipe.
The specific embodiment
Embodiment is extremely shown in Figure 5 referring to Fig. 1, a kind of flush type precast hollow diaphragm wall that assembles, be spliced by several wall elements, described wall element comprises wall element body 1, last coupling assembling and following coupling assembling, described wall element body 1 is cavity block, its left surface has tenon 2, the horizontal end face of described tenon 2 is the rectangle of sidewall evagination, right flank is groove, described tenon and groove topography are mated fully, both peg graft and form the tongue and groove connection, the described coupling assembling of going up is by the right openings cell body identical with wall element body 1 horizontal end face, backing plate 11 and two L type contiguous blocks 12 are formed, described opening cell body is surrounded by the connection steel plate 9 in strap bolt hole, its opening part and 12 socket connections of two L type contiguous blocks, the height of described L type contiguous block 12 is for connecting highly half of steel plate 9, described backing plate 11 is arranged on and connects steel plate 9 end faces, and outstanding steel plate 9 outers that connect, be welded with body of wall master muscle 6 on it, described coupling assembling down and last coupling assembling structure and shape are identical, the opening cell body of following coupling assembling is littler than the opening cell body width of last coupling assembling, realizes the splicing up and down of wall element after both peg graft by bolt.
Be arranged at intervals with floor 10 between the described connection steel plate 9.
The equal correspondence in the end face of described wall element body 1 and bottom surface has loss of weight double blinding hole 5.
Described tenon 2 is close to the waterproof strip of paper used for sealing 7 that its periphery is provided with water-swellable.
Described wall element body side is provided with Grouting Pipe 13 near bottom or tip position correspondence.
Described wall element body side is preset with hoisting ring 8.
The described flush type precast hollow construction of continuous concrete wall method of assembling, it is characterized in that: step is as follows:
The first, use template precast wall body cell body 1 and coupling assembling at precasting yard, and the steel member that exposes is done antirust processing;
The second, prefabricated wall element body 1 and the coupling assembling of finishing is transported to the construction plant; Guarantee in the transportation that prefabricated panel is injury-free, can use carriage and steel-wire fastener to fix in case of necessity;
The 3rd, use grab bucket or other groovers fluting, slotting length and width are slightly larger than single width ground-connecting-wall length and width;
The 4th, use crane by the wall element of the formation of hoisting ring first group of wall element body 1 of 8 liftings and coupling assembling and transfer to groove, transfer and from groove 3, extract mud in the process simultaneously out and guarantee certain mud level, until the steel member that hoisting ring 8 and ground is default is connected by steel pipe finish after, the relieving crane rope is connected with hoisting ring 8;
The 5th, the use crane lifts the wall element of second group of wall element body 1 and coupling assembling by hoisting ring 8 and transfers to groove, transfer in the process and from groove 3, to extract mud simultaneously out and to guarantee certain mud level, insert in the coupling assembling of first group of wall element until the coupling assembling of second group of wall element;
The 6th, connect the Grouting Pipe 13 of first group of wall element and second group of wall element, and use high-strength bolt to fix being connected steel plate and welding L type contiguous block 12 up and down of first group of wall element and second group of wall element, implement waterproof measure in the junction;
The 7th, after the junction construction finishes, crane will connect into first group of whole wall element and the first width of cloth ground-connecting-wall of conduct of second group of wall element is transferred until design height, transfers in the process to keep prefabricated ground-connecting-wall verticality by the spirit level that is fixed on the prefabricated ground-connecting-wall;
The 8th, use grab bucket or other groovers to be close to first width of cloth ground-connecting-wall fluting in first width of cloth ground-connecting-wall groove direction, slotting length and width are slightly larger than length and the width of single width ground-connecting-wall;
The 9th, use crane to lift the 3rd group of wall element by hoisting ring, the tenon 2 of the 3rd group of wall element is inserted in the groove 3 of first group of wall element and transfer, and repeat above fourth, fifth, six, seven steps and finish the construction of second width of cloth ground-connecting-wall;
The tenth, after construction of diaphragm wall finishes and body of wall periphery disturbance soil strength recovers, implement bodies of wall bottom slip castings by Grouting Pipe 13;
The 11, repeat above step, until finishing the ground-connecting-wall integral construction.
Above-mentioned construction is constructed and can be used the bight abnormal shape can assemble the hollow diaphragm wall of flush type to corner to realize the construction of prefabricated ground-connecting-wall.
Claims (7)
1. one kind can be assembled flush type precast hollow diaphragm wall, it is characterized in that: be spliced by several wall elements, described wall element comprises wall element body (1), last coupling assembling and following coupling assembling, described wall element body (1) is cavity block, its left surface has tenon (2), the horizontal end face of described tenon (2) is the rectangle of sidewall evagination, right flank is groove, described tenon and groove topography are mated fully, both peg graft and form the tongue and groove connection, the described coupling assembling of going up is by the right openings cell body identical with the horizontal end face of wall element body (1), backing plate (11) and two L type contiguous blocks (12) are formed, described opening cell body is surrounded by the connection steel plate (9) of strap bolt hole (4), its opening part and two L type contiguous blocks (12) socket connection, the height of described L type contiguous block (12) is for connecting highly half of steel plate (9), described backing plate (11) is arranged on and connects steel plate (9) end face, and outstanding steel plate (9) outer that connects, be welded with body of wall master muscle (6) on it, described coupling assembling down and last coupling assembling structure and shape are identical, the opening cell body of following coupling assembling is littler than the opening cell body width of last coupling assembling, realizes the splicing up and down of wall element after both peg graft by bolt.
2. the flush type precast hollow diaphragm wall that assembles according to claim 1 is characterized in that: be arranged at intervals with floor (10) between the described connection steel plate (9).
3. the flush type precast hollow diaphragm wall that assembles according to claim 1, it is characterized in that: the equal correspondence of the end face of described wall element body (1) and bottom surface has loss of weight double blinding hole (5).
4. the flush type precast hollow diaphragm wall that assembles according to claim 1, it is characterized in that: described tenon (2) is close to the waterproof strip of paper used for sealing (7) that its periphery is provided with water-swellable.
5. the flush type precast hollow diaphragm wall that assembles according to claim 1 is characterized in that: described wall element body side is provided with Grouting Pipe (13) near bottom or tip position correspondence.
6. the flush type precast hollow diaphragm wall that assembles according to claim 1, it is characterized in that: described wall element body side is preset with hoisting ring (8).
7. according to any described flush type precast hollow construction of continuous concrete wall method of assembling of claim 1 to 6, it is characterized in that: step is as follows:
The first, use template precast wall body cell body (1) and coupling assembling at precasting yard, and the steel member that exposes is done antirust processing;
The second, prefabricated wall element body (1) and the coupling assembling of finishing is transported to the construction plant;
The 3rd, use grab bucket or other groovers fluting, slotting length and width are slightly larger than single width ground-connecting-wall length and width;
The 4th, use crane lift by hoisting ring (8) first group of wall element body (1) and coupling assembling formation wall element and transfer to groove, transfer and from groove (3), extract mud in the process simultaneously out and guarantee certain mud level, until the steel member that hoisting ring (8) and ground is default is connected by steel pipe finish after, the relieving crane rope is connected with hoisting ring (8);
The 5th, the use crane lifts the wall element of second group of wall element body (1) and coupling assembling by hoisting ring (8) and transfers to groove, transfer in the process and from groove (3), to extract mud simultaneously out and to guarantee certain mud level, insert in the coupling assembling of first group of wall element until the coupling assembling of second group of wall element;
The 6th, the Grouting Pipe (13) that connects first group of wall element and second group of wall element, and use high-strength bolt to fix being connected steel plate and welding L type contiguous block (12) up and down of first group of wall element and second group of wall element, implement waterproof measure in the junction;
The 7th, after the junction construction finishes, crane will connect into first group of whole wall element and the first width of cloth ground-connecting-wall of conduct of second group of wall element is transferred until design height, transfers in the process to keep prefabricated ground-connecting-wall verticality by the spirit level that is fixed on the prefabricated ground-connecting-wall;
The 8th, use grab bucket or other groovers to be close to first width of cloth ground-connecting-wall fluting in first width of cloth ground-connecting-wall groove direction, slotting length and width are slightly larger than length and the width of single width ground-connecting-wall;
The 9th, use crane to lift the 3rd group of wall element by hoisting ring, the tenon (2) of the 3rd group of wall element is inserted in the groove (3) of first group of wall element and transfer, and repeat above fourth, fifth, six, seven steps and finish the construction of second width of cloth ground-connecting-wall;
The tenth, after construction of diaphragm wall finishes and body of wall periphery disturbance soil strength recovers, implement body of wall bottom slip casting by Grouting Pipe (13);
The 11, repeat above step, until finishing the ground-connecting-wall integral construction.
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