CN103334422B - 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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- CN103334422B CN103334422B CN201310258821.0A CN201310258821A CN103334422B CN 103334422 B CN103334422 B CN 103334422B CN 201310258821 A CN201310258821 A CN 201310258821A CN 103334422 B CN103334422 B CN 103334422B
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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 construction method thereof, particularly a kind of prefabricated diaphragm wall and construction method thereof.
Background technology
Along with the develop rapidly of economy and improving constantly of the urbanization level, urban issues becomes increasingly conspicuous, and as densely populated, congested in traffic, resource exhaustion, area deficiency, land price can be utilized surging.Using underground space configuration urban infrastructure is the effective way fundamentally solving issues about the cities' development.At present, what underground space space enclosing structure was the most frequently used is diaphragm wall.
And the form of structure of diaphragm wall is generally Cast-in-situs type diaphragm wall, because Cast-in-situs type diaphragm wall pours under water, inevitably there is following defect and disadvantage:
One, wait 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 needs wait for diaphragm wall concrete setting and can construct further after reaching some strength, and urban underground space construction requirements is tried one's best the reduction of erection time, cast-in-place ground-connecting-wall does not obviously meet the rapid construction requirement that urban underground space is built.
When two, building, quality not easily ensures
During the underwater casting of ground-connecting-wall, concrete easily presss from both sides mud, during descending reinforcing cage, reinforcing bar is stained with mud, and reduce concrete reinforcement bond stress, wall body difficult quality guarantee, and the random infiltration easily causing metope, this is a cast-in-place ground-connecting-wall insurmountable difficult problem always.
Three, in soft stratum, degree of plainness for wall surface is wayward
When soil layer weakness or layer of sand, if mud conditioning is improper, there is problem of caving in cell wall, commonly metope has evagination phenomenon, and degree of plainness for wall surface is difficult to the problems such as control.
Summary of the invention
The object of this invention is to provide one and can assemble flush type precast hollow diaphragm wall and construction method thereof, it is long to solve the existing cast-in-place construction of diaphragm wall cycle, the technical problem that construction quality cannot ensure.
For achieving the above object, the present invention adopts following technical scheme:
One can assemble flush type precast hollow diaphragm wall, be spliced by several wall elements, described wall element comprises wall element body, upper coupling assembling and lower coupling assembling, described wall element body is cavity block, its left surface is with 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 completely, both grafting form tongue and groove and connect, described upper coupling assembling is by the right openings cell body identical with the horizontal end face of wall element body, backing plate and two pieces of L-type contiguous block compositions, described opening cell body is surrounded by the junction steel plate with keyhole, its opening part and the socket connection of two pieces of L-type contiguous blocks, the height of described L-type contiguous block is the half of junction steel plate height, described backing plate is arranged on junction steel plate end face, and outstanding junction steel plate outer, it is welded with the main muscle of body of wall, described lower coupling assembling is identical with shape with upper connecting component structure, the opening cell body of lower coupling assembling is less than the opening cell body width of upper coupling assembling, realized the splicing up and down of wall element by bolt after both grafting.
Floor is arranged at intervals with between described junction steel plate.
The equal correspondence of end face and bottom surface of described wall element body has loss of weight double blinding hole.
Described tenon is close to the waterproof seal strip 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 construction method of described assembled flush type precast hollow diaphragm wall, is characterized in that: step is as follows:
The first, use template precast wall body cell body and coupling assembling at precasting yard, and antirust treatment is done to the steel beam column exposed;
The second, the prefabricated wall element body that completes and coupling assembling are transported to construction plant;
3rd, use grab bucket or other groovers fluting, slotting length and width are slightly larger than single width ground-connecting-wall length and width;
4th, crane is used to be lifted the wall element of the formation of first group of wall element body and coupling assembling by hoisting ring and transfer in groove, from groove, extract mud out and ensure certain mud level simultaneously in decentralization process, until steel beam column hoisting ring and ground preset is by after fastener for connection, decontrols crane rope and be connected with hoisting ring;
5th, crane is used to lift the wall element of second group of wall element body and coupling assembling by hoisting ring and transfer in groove, from groove, extract mud out and ensure certain mud level, until the coupling assembling of second group of wall element inserts in the coupling assembling of first group of wall element simultaneously in decentralization process;
6th, connect the Grouting Pipe of first group of wall element and second group of wall element, and use high-strength bolt fix the junction steel plate of first group of wall element and second group of wall element and weld upper and lower L-type contiguous block, implement waterproof measure in junction;
7th, after the construction of junction, crane is transferred until design height using what connect into first group of overall wall element and second group of wall element as first width ground-connecting-wall, keeps prefabricated ground-connecting-wall verticality in decentralization process by the spirit level be fixed on prefabricated ground-connecting-wall;
8th, use grab bucket or other groovers to be close to first width ground-connecting-wall fluting in first width ground-connecting-wall groove direction, slotting length and width are slightly larger than the length of single width ground-connecting-wall and width;
9th, use crane by hoisting ring lifting the 3rd group of wall element, transfer in the groove tenon of the 3rd group of wall element being inserted first group of wall element, and repeat above fourth, fifth, six, seven steps and complete the second width ground-connecting-wall construction;
Tenth, after the complete and body of wall periphery disturbed soil intensity of construction of diaphragm wall is recovered, implement slip casting bottom body of wall by Grouting Pipe;
11, repeat above step, until complete ground-connecting-wall integral construction.
Compared with prior art the present invention has following characteristics and beneficial effect:
(1) the present invention is when level is to connection, for tongue and groove connects, groove and tenon agree with completely, realize seamless link, guarantee the safety of jointing, meanwhile, use the measure of waterproof seal strip joint at link position, ensure the reliability of joint waterproofing, reduce gushing water in Excavation Process and to dash forward mud accident occurrence probability.Can effectively improve construction of diaphragm wall efficiency, reduce the duration of a project.
(2) in the present invention, wall element is set to hollow, body of wall lengthways main steel bar is arranged on the backing plate of coupling assembling, thus reduce construction hoisting difficulty, improve efficiency of construction.
(3) prefabricated ground-connecting-wall wall panel element and coupling assembling described in the present invention all prefabricatedly can to process at factory's batch, can realize reliably controlling wall leveling degree, thus promote workmanship.
(4) various ground-connecting-wall flat shape can be realized 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, the scope of application is extremely wide.
(5) the present invention is the prefabricated diaphragm wall of flush type, can strengthen body of wall vertical bearing capacity by measures such as bottom slip castings, can use, reach the application target of Two walls unite as one as underground space enclosed structure and basement interior wall.
(6) by arranging loss of weight double blinding hole, reducing the weight of coercion underground continuous wall, reducing concrete use amount.
The present invention can be widely used in underground exterior-protected structure or basement interior wall.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is wall connecting schematic diagram.
Fig. 2 is Fig. 1 top view.
Fig. 3 is the schematic cross-section that waterproof seal strip encloses.
Fig. 4 is linkage unit schematic diagram on body of wall.
Fig. 5 is linkage unit schematic diagram under body of wall.
Fig. 6 is coupling assembling detail drawing.
Reference numeral: 1-wall element body, 2-tenon, 3-groove, 4-keyhole, 5-loss of weight double blinding hole, the main muscle of 6-body of wall, 7-waterproof seal strip, 8-hoisting ring, 9-junction steel plate, 10-floor, 11-backing plate, 12-L type contiguous block, 13-Grouting Pipe.
Detailed description of the invention
Embodiment is see shown in Fig. 1 to Fig. 5, one can assemble flush type precast hollow diaphragm wall, be spliced by several wall elements, described wall element comprises wall element body 1, upper coupling assembling and lower coupling assembling, described wall element body 1 is cavity block, its left surface is with 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 completely, both grafting form tongue and groove and connect, described upper coupling assembling is by the right openings cell body identical with the horizontal end face of wall element body 1, backing plate 11 and two pieces of L-type contiguous blocks 12 form, described opening cell body is surrounded by the junction steel plate 9 with keyhole, its opening part and the socket connection of two pieces of L-type contiguous blocks 12, the height of described L-type contiguous block 12 is the half of junction steel plate 9 height, described backing plate 11 is arranged on junction steel plate 9 end face, and outstanding junction steel plate 9 outer, it is welded with the main muscle 6 of body of wall, described lower coupling assembling is identical with shape with upper connecting component structure, the opening cell body of lower coupling assembling is less than the opening cell body width of upper coupling assembling, realized the splicing up and down of wall element by bolt after both grafting.
Floor 10 is arranged at intervals with between described junction steel plate 9.
The equal correspondence of end face and bottom surface of described wall element body 1 has loss of weight double blinding hole 5.
Described tenon 2 is close to the waterproof seal strip 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 construction method of described assembled flush type precast hollow diaphragm wall, 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 antirust treatment is done to the steel beam column exposed;
The second, the prefabricated wall element body 1 that completes and coupling assembling are transported to construction plant; Ensure in transportation that prefabricated panel is injury-free, bracket and steel-wire fastener can be used if desired to fix;
3rd, use grab bucket or other groovers fluting, slotting length and width are slightly larger than single width ground-connecting-wall length and width;
4th, crane is used to be lifted the wall element of the formation of first group of wall element body 1 and coupling assembling by hoisting ring 8 and transfer in groove, from groove 3, extract mud out and ensure certain mud level simultaneously in decentralization process, until the steel beam column preset in hoisting ring 8 and ground is by after fastener for connection, decontrols crane rope and be connected with hoisting ring 8;
5th, crane is used to lift the wall element of second group of wall element body 1 and coupling assembling by hoisting ring 8 and transfer in groove, from groove 3, extract mud out and ensure certain mud level, until the coupling assembling of second group of wall element inserts in the coupling assembling of first group of wall element simultaneously in decentralization process;
6th, connect the Grouting Pipe 13 of first group of wall element and second group of wall element, and use high-strength bolt fix the junction steel plate of first group of wall element and second group of wall element and weld upper and lower L-type contiguous block 12, implement waterproof measure in junction;
7th, after the construction of junction, crane is transferred until design height using what connect into first group of overall wall element and second group of wall element as first width ground-connecting-wall, keeps prefabricated ground-connecting-wall verticality in decentralization process by the spirit level be fixed on prefabricated ground-connecting-wall;
8th, use grab bucket or other groovers to be close to first width ground-connecting-wall fluting in first width ground-connecting-wall groove direction, slotting length and width are slightly larger than the length of single width ground-connecting-wall and width;
9th, use crane by hoisting ring lifting the 3rd group of wall element, transfer in the groove 3 tenon 2 of the 3rd group of wall element being inserted first group of wall element, and repeat above fourth, fifth, six, seven steps and complete the second width ground-connecting-wall construction;
Tenth, the complete and body of wall periphery disturbed soil intensity of construction of diaphragm wall implements slip casting bottom body of wall by Grouting Pipe 13 after recovering;
11, repeat above step, until complete ground-connecting-wall integral construction.
Above-mentioned construction, construct to corner can use bight abnormal shape can assemble the hollow diaphragm wall of flush type realize prefabricated ground-connecting-wall construction.
Claims (5)
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), upper coupling assembling and lower coupling assembling, described wall element body (1) is cavity block, its left surface is with 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 completely, both grafting form tongue and groove and connect, described upper coupling assembling is by the right openings cell body identical with wall element body (1) horizontal end face, backing plate (11) and two pieces of L-type contiguous block (12) compositions, described opening cell body is surrounded by the junction steel plate (9) with keyhole (4), its opening part and the socket connection of two pieces of L-type contiguous blocks (12), the height of described L-type contiguous block (12) is the half of junction steel plate (9) height, described backing plate (11) is arranged on junction steel plate (9) end face, and outstanding junction steel plate (9) outer, it is welded with the main muscle of body of wall (6), described lower coupling assembling is identical with shape with upper connecting component structure, the opening cell body of lower coupling assembling is less than the opening cell body width of upper coupling assembling, realized the splicing up and down of wall element by bolt after both grafting,
Floor (10) is arranged at intervals with between described junction steel plate (9);
Described tenon (2) is close to the waterproof seal strip (7) that its periphery is provided with water-swellable.
2. according to claim 1ly assemble flush type precast hollow diaphragm wall, it is characterized in that: the equal correspondence of end face and bottom surface of described wall element body (1) has loss of weight double blinding hole (5).
3. according to claim 1ly assemble flush type precast hollow diaphragm wall, it is characterized in that: described wall element body side is provided with Grouting Pipe (13) near bottom or tip position correspondence.
4. according to claim 1ly assemble flush type precast hollow diaphragm wall, it is characterized in that: described wall element body side is preset with hoisting ring (8).
5. the construction method of the assembled flush type precast hollow diaphragm wall according to Claims 1-4 any one, 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 antirust treatment is done to the steel beam column exposed;
The second, the prefabricated wall element body (1) that completes and coupling assembling are transported to construction plant;
3rd, use grab bucket or other groovers fluting, slotting length and width are slightly larger than single width ground-connecting-wall length and width;
4th, crane is used to lift the wall element of the formation of first group of wall element body (1) and coupling assembling by hoisting ring (8) and transfer in groove, from groove (3), extract mud out in decentralization process simultaneously and ensure certain mud level, until the steel beam column preset in hoisting ring (8) and ground is by after fastener for connection, decontrols crane rope and be connected with hoisting ring (8);
5th, crane is used to lift the wall element of second group of wall element body (1) and coupling assembling by hoisting ring (8) and transfer in groove, from groove (3), extract mud out in decentralization process simultaneously and ensure certain mud level, until the coupling assembling of second group of wall element inserts in the coupling assembling of first group of wall element;
6th, connect the Grouting Pipe (13) of first group of wall element and second group of wall element, and use high-strength bolt fix the junction steel plate of first group of wall element and second group of wall element and weld upper and lower L-type contiguous block (12), implement waterproof measure in junction;
7th, after the construction of junction, crane is transferred until design height using what connect into first group of overall wall element and second group of wall element as first width ground-connecting-wall, keeps prefabricated ground-connecting-wall verticality in decentralization process by the spirit level be fixed on prefabricated ground-connecting-wall;
8th, use grab bucket or other groovers to be close to first width ground-connecting-wall fluting in first width ground-connecting-wall groove direction, slotting length and width are slightly larger than the length of single width ground-connecting-wall and width;
9th, use crane by hoisting ring lifting the 3rd group of wall element, transfer in the groove (3) tenon (2) of the 3rd group of wall element being inserted first group of wall element, and repeat above fourth, fifth, six, seven steps and complete the second width ground-connecting-wall construction;
Tenth, after the complete and body of wall periphery disturbed soil intensity of construction of diaphragm wall is recovered, implement slip casting bottom body of wall by Grouting Pipe (13);
11, repeat above step, until complete ground-connecting-wall integral construction.
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| CN106836192A (en) * | 2017-03-29 | 2017-06-13 | 王燏斌 | A kind of assembled subterranean wall and its construction method |
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