CN103806440A - Assembled plug-in-connection-type self-clamped hollow fabricated underground diaphragm wall and construction method thereof - Google Patents
Assembled plug-in-connection-type self-clamped hollow fabricated underground diaphragm wall and construction method thereof Download PDFInfo
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- CN103806440A CN103806440A CN201410077569.8A CN201410077569A CN103806440A CN 103806440 A CN103806440 A CN 103806440A CN 201410077569 A CN201410077569 A CN 201410077569A CN 103806440 A CN103806440 A CN 103806440A
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Abstract
The invention discloses an assembled plug-in-connection-type self-clamped hollow fabricated underground diaphragm wall and a construction method thereof. Wallboards are in plug-in connection in the horizontal direction to form the underground diaphragm wall; weight-reducing cavities which are not communicated are formed in the upper surfaces of the wallboards; wall bottom grouting guide pipes are pre-arranged in the wall body; a T-shaped tenon which is integrally connected with a wallboard and has a T-shaped longitudinal section is arranged on the left side of the wall board; the total length of the T-shaped tenon is smaller than the height of the wallboard; the lower surface of the cross part and the bottom surface of the vertical part of the T-shaped tennon are inclined planes respectively; a mortise is formed in the right side of the wallboard; during construction, the mortise and the T-shaped tenon can be in seamless plug-in connection from the top down. In addition, joint grouting and wall bottom grouting are respectively performed by adopting a post-grouting process. The underground diaphragm wall disclosed by the invention, the design is reasonable and the manufacture is convenient; the vertical connection adopts an non-through joggling form, so that the stability of connection between every two wallboards is ensured; no transverse joints are arranged, and thus great rigidity and stress concentration, caused by transverse joints are avoided; by adopting the joint grouting and the wall bottom grouting, the waterproof effect of the joints of the wall body and the stability of the wall body are enhanced. The construction process is simple; the convenience in operation is realized; technical requirements on constructors are lower.
Description
Technical field
The present invention relates to a kind of can use in underground space supporting, can be used as assembled the insertions self-clamping type precast hollow diaphragm wall of underground space retaining wall structure, waterproof construction and vertical bearing structure and construction method accordingly thereof.
Background technology
Along with improving constantly of economic develop rapidly and the urbanization level, urban issues becomes increasingly conspicuous, as densely populated, congested in traffic, resource exhaustion, can utilize area deficiency etc.Utilizing underground space configuration urban infrastructure is an effective way that solves issues about the cities' development.What at present, underground space space enclosing structure was the most frequently used is diaphragm wall.But, because Cast-in-situs type diaphragm wall pours under water, inevitably there is some defects and disadvantage, as wait for concrete setting cause claim for eot, while building quality be difficult for guaranteeing and soft stratum in degree of plainness for wall surface wayward etc.
The one occurring at present can be assembled flush type precast hollow diaphragm wall, adopt baroque connector to connect up and down, be that plane strain problems has the left and right of decisive role to connect the more common joggle of only employing etc. to solving body of wall stress deformation problem, effective reinforcing mode that less employing is extra, cause the bonding strength between wallboard inadequate, and existing prefabricated panel and connect up and down the complex structure of framework, cost is higher, the corner of construction of diaphragm wall needs the corner joint of other design specialized, working procedure is many, long in time limit, technician's competency profiling is high.Therefore, need at present one effective precast hollow diaphragm wall and construction method thereof cheaply badly.
Summary of the invention
The object of the invention is to provide one to assemble and inserts self-clamping type precast hollow diaphragm wall and construction method thereof, overcome cast-in-place diaphragm wall and exist the baroque connector of employing to connect up and down to, left and right connectivity problem is only adopted more common joggle, other effective reinforcing modes of less employing, causes the inadequate problem of bonding strength between wallboard; What solve existing prefabricated panel connects frame structures complexity, the prefabricated time is long, cost is high problem simultaneously up and down; Also solve existingly prefabricatedly descend hollowly the working procedure of diaphragm wall many, the corner of construction of diaphragm wall needs the corner joint of other design specialized, complicated operation, the problem high to technician's competency profiling.
The technical solution adopted for the present invention to solve the technical problems is:
One can be assembled and be inserted self-clamping type precast hollow diaphragm wall, peg graft and form by several wallboard left and right, the upper surface of described wallboard has the loss of weight cavity that bottom does not connect, in body of wall, be embedded with grouting pipe at the bottom of hoisting ring installing sleeve and wall, described wall rising pouring slurry catheter opening is at the upper surface of wallboard, it is characterized in that: the left surface of described wallboard is the T shape tenon being connected with wallboard one, the total length of described T shape tenon is less than the whole height of wallboard left surface, the transverse part top of described T shape tenon width concordant with the upper surface of wallboard and width and wallboard left surface is identical, described T shape tenon is all low inside and high outside inclined-plane at the soffit of transverse part and the bottom surface of vertical portion, the right flank of described wallboard is the tongue-and-groove mating completely with T shape tenon, carry out seamless grafting with T shape tenon.
Described T shape tenon is equal at the angle of inclination on the inclined-plane of transverse part soffit and vertical portion bottom surface, and it is greater than the angle of friction of pre-cast concrete walling contact level, and the bevel angle of tongue-and-groove equates with the bevel angle of T shape tenon.
As the preferred technical solution of the present invention, the thickness of described transverse part is 1/3～2/5 of wallboard whole height.
As present invention further optimization technical scheme, the total length of described T shape tenon is 4/5～2/3 of wallboard whole height.
As present invention further optimization technical scheme, the left surface of described wallboard is provided with the sealing adhesive tape of 2～4 water-swellable, and described sealing adhesive tape fits tightly the outer wall at T shape tenon from top to bottom.
As present invention further optimization technical scheme, the T shape tenon of described wallboard is provided with seam grouting pipe, and described seam grouting pipe opening is located at the upper surface of T shape tenon, and after perforation T shape tenon, another opening is on the inclined-plane of vertical portion bottom surface.
As present invention further optimization technical scheme, described seam grouting pipe has 2～3.
As present invention further optimization technical scheme, described wallboard is tabular wallboard for forming plane body of wall or the perpendicular type wallboard for corner construction, and described perpendicular type wallboard is the special-shaped wallboard after centre bends.
The invention still further relates to a kind of construction method of making above-mentioned assembled insertion self-clamping type precast hollow diaphragm wall, it is characterized in that: comprise the steps:
The transportation of step 2, wallboard: prefabricated wallboard is transported to construction plant, will guarantees in transportation that wallboard is injury-free, can use if desired bracket and wire rope to fix;
Step 6, lift next width wallboard: hoisting ring is connected on the hoisting ring installing sleeve of wallboard, use crane to lift by crane the second width wallboard, make the T shape tenon of the second width wallboard along the tongue-and-groove natural downslide of first width wallboard, instantly when sliding into certain altitude to the soffit of T shape tenon transverse part and the inclined-plane of the bottom surface of vertical portion and contacting with the inclined surface on tongue-and-groove, decrease speed slows down, rely on body of wall deadweight that the second width wallboard is glided along inclined-plane, with the first width wallboard jam-packed;
Step 9, body of wall bottom slip casting: carry out body of wall bottom slip casting by grouting pipe at the bottom of wall 5, realize being connected and fixed of whole body of wall and the soil body;
Step 10, repeating step five to step 9 complete the construction of whole precast hollow diaphragm wall.
As present invention further optimization technical scheme, the construction method of above-mentioned assembled insertion self-clamping type precast hollow diaphragm wall, it is characterized in that: in described step 10, in the time that precast hollow diaphragm wall runs into turning, use perpendicular type wallboard to realize turning and arrange.
Compared with prior art, beneficial effect of the present invention is as follows:
Product design of the present invention is reasonable, without complicated connector, simple in structure, easy to make, has solved existing prefabricated panel and has connected up and down frame structures complexity, the prefabricated time is long, cost is high problem;
The vertical joggle form not connecting that adopts that connects, by upper and lower twice inclined-plane is set between two width wallboards, rely on body of wall deadweight to be adjacent to two width wallboards, while effectively avoiding inserting the second width wallboard, two walls are difficult to close-connected problem, have guaranteed the stability connecting between wallboard; Transverse joint is not set, has avoided the large and problem of stress concentration of rigidity that transverse joint causes, adopted post grouting process, carry out respectively seam slip casting and wall rising pouring slurry, increase and strengthen body of wall vertical bearing capacity, guarantee the soundness of body of wall; Contiguous prefabricated wallboard joggle place arranges sealing adhesive tape and carries out the measure of adaptivity water joint, reduce the prominent mud accident occurrence probability of gushing water in Excavation Process, guarantee the water-proof function of joint, by the slip casting of seam cavity, the further performance of reinforced joint waterproof, exists and adopts baroque connector to connect up and down, left and right connectivity problem is only adopted to the inadequate problem of bonding strength between more common joggle or other connected modes, other effective reinforcing modes of less employing, wallboard thereby well overcome cast-in-place diaphragm wall;
Work progress is simple, constructor's technical requirements is low, prefabricated panel is prefabricated in the factory and forms, dimensional standard, guarantee to connect the planeness of back wall, promote workmanship, solved existingly prefabricatedly descend hollowly the working procedure of diaphragm wall many, complicated operation, the problem high to technician's competency profiling;
Wallboard of the present invention has tabular and two kinds of forms of perpendicular type, and various wallboard flat shapes can realize by the working special-shaped wallboard that is prefabricated in the factory, and do not need the corner joint of other design specialized, effectively improve construction of diaphragm wall efficiency, reduce the duration of a project;
Finally, the present invention is applied widely, can be used as underground space enclosed structure and basement interior wall and uses, and reaches the application target of two wall unifications.
Accompanying drawing explanation
Fig. 1 is facade structures schematic diagram of the present invention, the structure of the T shape tenon 2 of outstanding left surface;
Fig. 2 facade structures schematic diagram of the present invention, the structure of the tongue-and-groove 3 of outstanding right flank;
Fig. 3 is top view of the present invention, the structural representation of outstanding upper surface;
Fig. 4 is the A-A cross-sectional view of Fig. 3 of the present invention.
Reference numeral: grouting pipe, 6-loss of weight cavity, 7-sealing adhesive tape, 8-hoisting ring installing sleeve, 9-inclined-plane, the inclined-plane of 91-T shape tenon, the inclined-plane of 92-tongue-and-groove at the bottom of 1-wallboard, 2-T shape tenon, 21-transverse part, the vertical portion of 22-, 3-tongue-and-groove, 4-seam grouting pipe, 5-wall.
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1 to 4, one can be assembled and be inserted self-clamping type precast hollow diaphragm wall, is pegged graft and is formed by several wallboard 1 left and right, and the upper surface of described wallboard 1 has loss of weight cavity 6, be used for reducing prefabricated panel weight, reduce concrete amount, the bottom of loss of weight cavity 6 does not connect; In body of wall, be embedded with grouting pipe 5 at the bottom of hoisting ring installing sleeve 8 and wall, at the bottom of wall, the opening of grouting pipe 5 is at the upper surface of wallboard 1, connect whole wallboard, outlet is on the bottom surface of wallboard, hoisting ring installing sleeve 8 comprises horizontal hoisting ring installing sleeve and vertical hoisting ring installing sleeve, the end of vertical hoisting ring installing sleeve is at the upper surface of wallboard, and the end of horizontal hoisting ring installing sleeve is exposed at the leading flank of wallboard, can facilitate the vertical of body of wall 1 and laterally lift or transport after connection suspension ring; The left surface of described wallboard 1 is the T shape tenon 2 being connected with wallboard one, the total length of described T shape tenon 2 is less than the whole height of wallboard left surface, and the upper surface of wallboard is concordant and the width of width and wallboard left surface is identical for described T shape tenon 2 upper surfaces of transverse part 21, the Dou Shi inclined-plane, bottom surface 9 of the soffit of described transverse part 21 and vertical portion 22; Comprise low inside and high outside T shape tenon inclined-plane 91 and high outside and low outside,, the closely inclined-plane 92 of chimeric tongue-and-groove, inclined-plane 91 with T shape tenon, the right flank of wallboard is the tongue-and-groove 3 mating completely with T shape tenon 2, and described T shape tenon 2 can carry out seamless grafting with tongue-and-groove 3 from top to bottom; The angle of inclination on the inclined-plane 91 of described T shape tenon and the inclined-plane 92 of tongue-and-groove equates, is 30 ° of left and right, and this angle requires to be greater than the angle of friction on precast concrete surface, to guarantee that body of wall can rely on deadweight to slip into and clamp; The thickness of the transverse part 21 of described T shape tenon 2 be wallboard left surface whole height 1/3～2/5, the total length of described T shape tenon 2 be wallboard left surface whole height 4/5～2/3; On the left surface of described wallboard 1, have the sealing adhesive tape 7 of 2～4 water-swellable from top to bottom, sealing adhesive tape 7 is closely entrenched in the default groove of T shape tenon 2 outer walls; The T shape tenon 2 of described wallboard 1 is provided with seam grouting pipe 4, described seam grouting pipe 4 openings are located at the upper surface of T shape tenon 2, connect after the transverse part 21 and vertical portion 22 of T shape tenon 2, opening is on the inclined-plane of vertical portion bottom surface, and described seam grouting pipe 4 can have 2～4; Described wallboard 1 can have various flat shapes, the perpendicular type wallboard of constructing as the tabular wallboard for forming plane body of wall or for corner, and perpendicular type wallboard 1 is to carry out the special-shaped wallboard that left and right is bent to form in centre.Wallboard 1 uses template to process in factory, and built-in fitting will guarantee certain machining accuracy in it, makes the T shape tenon 2 of wallboard can easier embed in the tongue-and-groove 3 of adjacent wall board and fit tightly; Sealing adhesive tape 7 is closely entrenched in the prefabricated groove of wallboard T shape tenon 2 sidewalls from top to bottom, in the processing of wallboard 1 or transportation, should be noted that waterproof and touching.
In underground space process of construction, realize processing and the construction of underground space supporting and protection structure-prefabricated diaphragm wall by following steps, guarantee rapid construction and workmanship:
The transportation of step 2, wallboard 1: prefabricated wallboard 1 is connected and is transported to construction plant, guarantee in transportation that wallboard 1 is injury-free, can use if desired bracket and wire rope to fix;
Step 6, lift next width wallboard: hoisting ring is connected on the hoisting ring installing sleeve 8 of wallboard, use crane to lift by crane the second width wallboard, make the T shape tenon 2 of the second width wallboard along tongue-and-groove 3 natural downslides of first width wallboard, instantly when sliding into certain altitude to the soffit of T shape tenon transverse part 21 and the inclined-plane of the bottom surface of vertical portion 22 and contacting with the inclined surface on tongue-and-groove 3, decrease speed slows down, rely on body of wall deadweight that the second width wallboard is glided along inclined-plane, with the first width wallboard jam-packed;
Step 9, body of wall bottom slip casting: carry out body of wall bottom slip casting by grouting pipe at the bottom of wall 5, realize being connected and fixed of whole body of wall and the soil body;
Step 10, repeating step five to step 9 complete the construction of whole precast hollow diaphragm wall.In the time that precast hollow diaphragm wall runs into turning, use perpendicular type wallboard to realize turning.
Content described in this manual embodiment is only enumerating of way of realization to inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form of embodiment statement, and protection scope of the present invention also and conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.
Claims (10)
1. one kind can be assembled insertion self-clamping type precast hollow diaphragm wall, peg graft and form by several wallboards (1) left and right, the upper surface of described wallboard (1) has the loss of weight cavity (6) that bottom does not connect, in body of wall, be embedded with grouting pipe (5) at the bottom of hoisting ring installing sleeve (8) and wall, grouting pipe at the bottom of described wall (5) opening is at the upper surface of wallboard, it is characterized in that: the left surface of described wallboard (1) is the T shape tenon (2) being connected with wallboard one, the total length of described T shape tenon (2) is less than the whole height of wallboard left surface, transverse part (21) top of described T shape tenon (2) is identical with the upper surface of wallboard width concordant and width and wallboard left surface, described T shape tenon (2) is all low inside and high outside inclined-plane (9) at the soffit of transverse part and the bottom surface of vertical portion, the right flank of described wallboard (1) is the tongue-and-groove that carries out seamless grafting (3) mating completely with T shape tenon (2).
2. according to claim 1 assembling inserted self-clamping type precast hollow diaphragm wall, it is characterized in that: described T shape tenon (2) all equates at the angle of inclination on the inclined-plane (9) of transverse part soffit and vertical portion bottom surface, it is greater than the angle of friction of pre-cast concrete walling contact level.
3. according to claim 1 assembling inserted self-clamping type precast hollow diaphragm wall, it is characterized in that: the thickness of described transverse part (21) is 1/3～2/5 of wallboard whole height.
4. according to claim 1 assembling inserted self-clamping type precast hollow diaphragm wall, it is characterized in that: the total length of described T shape tenon (2) is 4/5～2/3 of wallboard whole height.
5. according to claim 1 assembling inserted self-clamping type precast hollow diaphragm wall, it is characterized in that:
The left surface of described wallboard (1) is provided with the sealing adhesive tape (7) of 2～4 water-swellable, and described sealing adhesive tape (7) fits tightly the outer wall at T shape tenon from top to bottom.
6. according to claim 1 assembling inserted self-clamping type precast hollow diaphragm wall, it is characterized in that: the T shape tenon (2) of described wallboard (1) is provided with seam grouting pipe (4), described seam grouting pipe (4) opening is located at the upper surface of T shape tenon (2), connects rear another opening of T shape tenon (2) on the inclined-plane of vertical portion bottom surface.
7. according to claim 6 assembling inserted self-clamping type precast hollow diaphragm wall, it is characterized in that: described seam grouting pipe (4) has 2～3.
8. according to claim 7 assembling inserted self-clamping type precast hollow diaphragm wall, it is characterized in that:
Described wallboard (1) is the perpendicular type wallboard for forming the tabular wallboard of plane body of wall or constructing for corner, and described perpendicular type wallboard is the special-shaped wallboard after centre bends.
9. a construction method of making the assembled insertion self-clamping type precast hollow diaphragm wall described in claim 1～8 any one, is characterized in that: comprise the steps:
Step 1, wallboard (1) prefabricated: the wallboard (1) that uses the prefabricated diaphragm wall of template at prefabricated workshop, the strict size of controlling wall body built-in fitting and wallboard, be embedded in sealing adhesive tape (7) at prefabricated sealing adhesive tape mounting groove, guarantee that sealing adhesive tape (7) installation is firm;
The transportation of step 2, wallboard (1): prefabricated wallboard (1) is transported to construction plant, will guarantees in transportation that wallboard (1) is injury-free, can use if desired bracket and wire rope to fix;
Step 3, open the mounting groove of first wallboard (1): use grab bucket or other groovers fluting, slotting length and width are slightly larger than length and the width of single width wallboard (1);
Step 4, lifting the first width wallboard: hoisting ring is connected on the hoisting ring installing sleeve (8) of wallboard, use crane to lift by crane first width wallboard, in decentralization process, keep prefabricated panel verticality by spirit level, transfer to being slowly adjusted to after in groove and reach design elevation, after stable, remove hanging apparatus;
Step 5, open the mounting groove of next wallboard: use grab bucket or other groovers lifting chase mortise one side of the first complete width wallboard, be close to the first width wallboard and open mounting groove, slotting length and width are slightly larger than length and the width of single width wallboard;
Step 6, lift next width wallboard: hoisting ring is connected on the hoisting ring installing sleeve (8) of wallboard, use crane to lift by crane the second width wallboard, make the T shape tenon (2) of the second width wallboard along tongue-and-groove (3) natural downslide of first width wallboard, instantly when sliding into certain altitude to the soffit of T shape tenon transverse part (21) and the inclined-plane (9) of the bottom surface of vertical portion (22) and contacting with the inclined surface on tongue-and-groove (3), decrease speed slows down, rely on body of wall deadweight that the second width wallboard is glided along inclined-plane, with the first width wallboard jam-packed;
Step 7, in the seam of two wallboard joggles, note clear water: in the seam of two width prefabricated panel joggles, inject clear water, the mud in displacement seam, avoids forming mud skin on sealing adhesive tape (7) surface, affects soaking effect;
Step 8, by joggle place up/down perforation seam grouting pipe (4) to slip casting in seam: after the complete and periphery disturbed soil intensity of wallboard construction is recovered, by joggle place up/down perforation seam grouting pipe (4) to slip casting in seam, now sealing adhesive tape (7) plays a role, and has greatly strengthened the degree of being connected firmly between wallboard after joint grouting;
The bottom slip casting of step 9, body of wall: carry out the bottom grouting and reinforcing of body of wall by grouting pipe at the bottom of wall (5), realize being connected and fixed of whole body of wall and the soil body;
Step 10, repeating step five to step 9 complete the construction of whole precast hollow diaphragm wall.
10. the construction method of inserting self-clamping type precast hollow diaphragm wall of assembling according to claim 9, is characterized in that: in described step 10, in the time that precast hollow diaphragm wall runs into turning, use perpendicular type wallboard to realize turning and arrange.
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| CN201410077569.8A CN103806440B (en) | 2014-03-05 | 2014-03-05 | One can be assembled and be inserted self-clamping type precast hollow diaphram wall and construction method thereof |
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| CN201410077569.8A CN103806440B (en) | 2014-03-05 | 2014-03-05 | One can be assembled and be inserted self-clamping type precast hollow diaphram wall and construction method thereof |
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| CN105089044A (en) * | 2015-08-31 | 2015-11-25 | 中国建筑股份有限公司 | Horizontal push compaction type prefabricated underground continuous wall system and construction method thereof |
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