CN118187955A - Elastic body waterproof structure of active extrusion coagulation bag pad between seams of underground engineering structure and construction method - Google Patents
Elastic body waterproof structure of active extrusion coagulation bag pad between seams of underground engineering structure and construction method Download PDFInfo
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- CN118187955A CN118187955A CN202410391665.3A CN202410391665A CN118187955A CN 118187955 A CN118187955 A CN 118187955A CN 202410391665 A CN202410391665 A CN 202410391665A CN 118187955 A CN118187955 A CN 118187955A
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- 238000001125 extrusion Methods 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 230000015271 coagulation Effects 0.000 title claims abstract description 19
- 238000005345 coagulation Methods 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 119
- 239000007924 injection Substances 0.000 claims abstract description 95
- 238000002347 injection Methods 0.000 claims abstract description 95
- 238000007789 sealing Methods 0.000 claims abstract description 86
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000007711 solidification Methods 0.000 claims abstract description 7
- 230000008023 solidification Effects 0.000 claims abstract description 7
- 239000004567 concrete Substances 0.000 claims description 29
- 229920001971 elastomer Polymers 0.000 claims description 28
- 239000000806 elastomer Substances 0.000 claims description 22
- 239000002131 composite material Substances 0.000 claims description 16
- 239000011178 precast concrete Substances 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 229920002943 EPDM rubber Polymers 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 8
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000007774 longterm Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011405 expansive cement Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000013138 pruning Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Gasket Seals (AREA)
Abstract
The invention belongs to the technical field of underground structure engineering, and particularly relates to an elastic body waterproof structure of an active extrusion coagulation bag cushion between seams of an underground structure and a construction method. Before assembling, the air in the cavity of the bag cushion is pumped out, so that the bag cushion is tightly attached to the bottom of the groove, the height of the bag cushion is further reduced, and collision damage in the assembling process is avoided; after assembling is completed, the liquid injection pipe is used for injecting liquid into the reserved cavity of the bag pad, the pressure value of the sealing pressure is controlled by controlling the pressure of the liquid injection pipe, so that the sealing water stopping effect of the elastic body of the bag pad is ensured, and after the solidification of the liquid injection in the cavity of the bag pad is completed, a permanent waterproof line can be formed, so that the sealing water stopping function of the underground structure is realized.
Description
Technical Field
The invention belongs to the technical field of underground structure engineering, and particularly relates to an elastic body waterproof structure of an active extrusion coagulation bag cushion between underground structure joints and a construction method.
Background
The underground building structure mainly comprises a shield tunnel, a immersed tube tunnel, a comprehensive pipe gallery, a subway station, a ground wall structure and the like. Waterproof design is the key point of underground structural design, and joint waterproof design is important. At present, the seam of an underground structure is waterproof, and a rubber sealing gasket with holes is usually adopted. The sealing principle is that the rubber sealing gasket is compressed and compacted by external force, so that the aim of sealing and stopping water is fulfilled. For tunnel lining constructed by a shield method, enough pressing force can be provided for joints when a shield machine is jacked in, and the rubber sealing gasket is compressed to achieve the aim of water stop. For the assembled underground station structure constructed by the open cut method, special devices and measures are needed to provide external force (prestress tensioning, jack tightening and the like) for compression of the rubber sealing gasket, the operation procedure is complex, and the construction speed is low. In addition, with conventional rubber gaskets, the gasket must protrude a certain height above the surface of the component. In the prefabricated component assembling process, the raised rubber pad is easy to touch, and the risk of damage or falling exists, so that the construction efficiency and the waterproof effect of the assembled structure are affected.
Therefore, in order to solve the above problems, it is necessary to provide a sealing water stop pad structure with better performance and a construction method.
Disclosure of Invention
The invention provides an elastic body waterproof structure for an active extrusion coagulation bag pad between seams of an underground engineering structure and a construction method thereof, which are used for solving the problems of the existing waterproof technology of the underground structure.
The technical scheme adopted by the invention for solving the problem is as follows:
The utility model provides an initiative extrusion congeals bag pad elastomer waterproof construction between underground engineering structure seam, includes bag pad elastomer waterproof seal composite construction, bag pad elastomer waterproof seal composite construction includes single or sets up the sealed bag pad in component seam (component seam) department in pairs, set up the component slot that is used for settling sealed bag pad on the component, sealed bag pad includes bag pad body, sets up at the sealed arch of bag pad body external surface, sets up at the inside bag pad cavity of bag pad body and annotates the liquid structure that links to each other with the bag pad cavity, through implementing initiative notes liquid extrusion construction method to sealed bag pad, after annotating liquid setting solidification, can form permanent waterproof line of defense.
In one embodiment, the member is a concrete member.
In one embodiment, the component is a precast component, which is a precast concrete component.
In one embodiment, the open end dimension of the member channel is greater than the dimension of the closed end.
In one embodiment, the groove at the joint of the bottom of the bag cushion body and the concrete member is fixed by bonding with epoxy resin, so that the bag cushion body is prevented from falling off.
In one embodiment, the outer contour of the bladder body conforms to the shape of the member groove, the surface height of the bladder is less than the depth of the member groove, and the top of the bladder bulges out of the member groove when the bladder is filled with liquid.
In one embodiment, the cross-section of the bladder pad body may be rectangular, trapezoidal, or oval.
In one embodiment, the liquid injection structure comprises a liquid injection pipe, one end of the liquid injection pipe is connected to the bag pad body and communicated with the bag pad cavity, the other end of the liquid injection pipe extends out of the temporary side wall of the prefabricated part, and the temporary end of the liquid injection pipe is provided with a liquid injection nozzle.
In one embodiment, the liquid injection pipe is connected with the bag pad body by vulcanization plastic compression.
In one embodiment, the liquid injection pipe is used for injecting liquid into the bag cushion, and when the liquid injection is solidified, a seal is formed between the bag cushion or the bag cushion and the prefabricated concrete structure.
In one embodiment, the bag pad body is an ethylene propylene diene monomer bag pad, and the thickness of the bag pad body is 3-5 mm.
In one embodiment, the bag cushion body is adhered in a member groove at a concrete joint, the width of the bottom of the member groove is 50-55 mm, the width of the top of the member groove is 60-65 mm, and the depth of the member groove is 14-15 mm.
In one embodiment, the sealing protrusion is integrally formed on the outer surface of the airbag cushion body and extends along the length direction of the airbag cushion body, and the cross section of the sealing protrusion is rectangular.
In one embodiment, the height of the sealing protrusion is 1-2 mm, the width of the protrusion is 8-10 mm, and the clearance between adjacent sealing protrusions is 4-5 mm.
The second invention of the present invention aims at: the construction method for actively extruding and condensing the elastic body waterproof structure of the bag cushion between the seams of the underground engineering structure comprises the following steps:
S1, before assembling the components, firstly, carrying out negative pressure treatment on the cavity of the bag cushion to enable the inside of the bag cushion to be in a negative pressure state, and tightly attaching the sealed bag cushion to the inner side of a component groove so as to facilitate the movement and assembling of the components;
s2, when the components are assembled, the prefabricated components and the prefabricated components can be assembled, and the prefabricated components and the cast-in-place concrete components can also be assembled;
s3, after assembling, filling liquid into the cavity of the bag pad by using the liquid injection structure, controlling the joint to contact the sealing pressure value by controlling the liquid injection pressure, and realizing the sealing water stop function, wherein:
The prefabricated parts and the prefabricated parts are assembled, and the liquid injection sequence can adopt a synchronous liquid injection method at two sides or a step-by-step liquid injection method that liquid is injected firstly at one side and then at the other side;
the prefabricated component and the cast-in-place concrete component are assembled by adopting a single-side liquid injection method of a single sealing bag gasket;
S4, after filling of the liquid is completed, a liquid filling port of the liquid filling structure is closed, extrusion stress among the sealing bag gaskets, between the sealing bag gaskets and the concrete groove or between the sealing bag gaskets and the cast-in-place concrete member is guaranteed, and a sealing water stopping function is realized;
s5, after the coagulation and solidification of the liquid injected into the cavity of the bag pad are completed, a permanent waterproof and waterproof line can be formed, and a long-term reliable waterproof effect is achieved.
The invention has the advantages and positive effects that:
1. according to the invention, the air in the cavity of the bag cushion is pumped out before assembly, so that the bag cushion is tightly attached to the bottom of the groove, the height of the bag cushion is further reduced, and collision damage in the assembly process is avoided.
2. According to the invention, after assembly is completed, the liquid injection pipe is used for injecting liquid into the reserved cavity of the bag pad, and the pressure value of the bag pad is controlled by controlling the liquid injection pressure, so that the sealing and water stopping effect of the elastic body of the bag pad is ensured, and the sealing and water stopping function of the underground structure is realized.
3. According to the invention, after the coagulation and solidification of the liquid injected into the cavity of the bag pad are completed, a permanent waterproof and waterproof line can be formed, and a long-term reliable waterproof effect can be achieved.
4. In the invention, the sealing bag gaskets can be arranged on one side or in pairs, and the two sides of the sealing bag gaskets can be synchronously injected in the liquid injection process or the two sides of the sealing bag gaskets are firstly injected and then injected in the liquid injection process by steps, so that large extrusion stress occurs at the convex positions of the surfaces of the sealing bag gaskets due to stress concentration in the liquid injection process, thereby forming a plurality of sealing waterproof and waterproof lines.
Drawings
The technical solution of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for the purpose of illustration only and thus are not limiting the scope of the present invention. Moreover, unless specifically indicated otherwise, the drawings are intended to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.
FIG. 1 is a schematic cross-sectional shape and installation of a waterproof sealing composite structure of a bladder pad elastomer.
Fig. 2 is a schematic diagram of the state before liquid injection of the waterproof sealing composite structure of the bladder pad elastomer.
Fig. 3 is a schematic diagram of a state of the waterproof sealing composite structure of the bladder pad elastomer after liquid injection by adopting a synchronous liquid injection method.
Fig. 4 is a schematic diagram of a state of the waterproof sealing composite structure of the bladder pad elastomer after liquid injection by a step-by-step liquid injection method.
FIG. 5 is a schematic diagram of the state of the waterproof sealing composite structure of the bladder pad elastomer after liquid injection by adopting a single-side liquid injection method;
Fig. 6 is a flow chart of a construction method of the bladder-cushion elastomer waterproof sealing composite structure.
Wherein: 1. a member slit; 2. a concrete member; 3. a member groove; 4. a bladder pad body; 5. the bag pad is convex; 6. a bladder pad cavity; 7. and a liquid injection pipe.
Detailed Description
First, it should be noted that the following detailed description of the specific structure, characteristics, advantages, and the like of the present invention will be given by way of example, however, all descriptions are merely illustrative, and should not be construed as limiting the present invention in any way. Furthermore, any single feature described or implied in the embodiments mentioned herein, or any single feature shown or implied in the figures, may nevertheless be continued in any combination or pruning between these features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity of the drawing, identical or similar features may be indicated at one point in the same drawing.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances. The present invention will be described in detail with reference to the accompanying drawings.
Examples:
the utility model provides an initiative extrusion congeals bag pad elastomer waterproof construction between underground engineering structure seam, includes the waterproof sealed composite construction of bag pad elastomer, the waterproof sealed composite construction of bag pad elastomer includes singly or set up the sealed bag pad in pairs in component seam (component seam 1) department, set up the component slot 3 that is used for settling sealed bag pad on the component, sealed bag pad includes bag pad body 4, sets up at the sealed arch 5 of bag pad body 4 surface, sets up at the inside bag pad cavity 6 (inside filling liquid) of bag pad body 4 and annotates the liquid structure that links to each other with bag pad cavity 6.
In this embodiment, the waterproof sealing composite structure of the bladder pad elastomer includes a sealing protrusion on the surface of the bladder pad body, a bladder pad cavity closed inside the bladder pad, and a cured elastomer filled in the bladder pad cavity (liquid injection). The elastomer is a composite structure formed by curing two materials, and is constructed on the engineering site. The sealing bulge material of the bag pad body and the surface adopts ethylene propylene diene monomer rubber with incompressible volume, the peripheral wall thickness is 3-5 mm, and the bag pad is precisely produced in a factory. The height of the bulges on the surface of the bag cushion is 1-2 mm, the width of the bulges is 8-10 mm, and the net distance between adjacent bulges is 4-5 mm. The waterproof sealing composite structure of the bag cushion elastomer is generally symmetrically arranged at the joint of the concrete structure or is arranged on one side, and sealing bulges on the bag cushion body and the surface are not higher than the depth of the concrete groove, so that falling off or damage caused by friction in the subsequent concrete (or post-assembled prefabricated component) construction process is avoided.
Before assembly, the air in the cavity of the bag cushion is pumped out, so that the bag cushion is tightly attached to the bottom of the groove, the height of the bag cushion is further reduced, and collision damage in the assembly process is avoided. After the assembly is completed, the liquid injection pipe is used for injecting liquid into the reserved cavity of the bag pad, and the bag pad is controlled to contact with the sealing pressure value by controlling the liquid injection pressure, so that the sealing water stopping function of the underground structure is realized. The liquid injection process can adopt a step-by-step liquid injection method of synchronously injecting liquid at two sides or injecting liquid at one side firstly and then at the other side, and single-side arrangement and liquid injection can be adopted when the prefabricated component is connected with cast-in-place concrete. In the liquid injection process, large extrusion stress appears at the convex position of the surface of the bag cushion due to stress concentration, so that a plurality of sealing waterproof lines are formed.
Further, it is also contemplated in this embodiment that the member is a concrete member 2.
Furthermore, in this embodiment, the prefabricated member may be a prefabricated member, and, taking this embodiment as an example, before the prefabricated member is assembled and constructed, air in the cavity of the bag pad may be pumped out, so as to further reduce the height of the sealing bag pad and reduce the risk of collision in the hoisting and assembly construction process. When the liquid is injected into the cavity of the bag pad, the synchronous liquid injection at two sides or the step-by-step liquid injection method that one side is firstly injected and the other side is then injected can be selected. When the prefabricated part and the cast-in-place concrete are connected, the cavity of the bag cushion can be arranged on one side and filled with liquid. In the liquid injection process, the sealing water stopping effect of the elastic body of the bag pad is ensured by controlling the liquid injection pressure, and after the liquid injection is finished, the liquid injection port at the empty end of the liquid injection pipe is closed, so that the water stopping function of the sealing bag pad is realized.
Further, it is also contemplated in this embodiment that the open end of the member channel 3 is larger in size than the closed end.
Still further, it is also contemplated in this embodiment that the waterproof sealing composite structures of the bladder pad elastomer are generally arranged in pairs, and each side of the joint of the concrete structure is provided with a sealing bladder pad, and the opposite surfaces of the paired bladder pad bodies are provided with a plurality of sealing protrusions 5.
Further, it is also contemplated in this embodiment that the outer contour of the pad body 4 is adapted to the shape of the member groove 3, and when the sealing pad is not filled with the liquid, the surface height of the pad body 4 is lower than the depth of the member groove 3; when the sealing cushion is injected with the injection liquid, the top of the cushion body 4 bulges out of the member groove 3.
Still further, it is contemplated in this embodiment that the cross-section of the cushion body 4 may be rectangular, trapezoidal or oval, and the wall thickness thereof may be determined according to the actual filling pressure and compression performance.
Still further, it is considered in this embodiment that the liquid injection structure includes a liquid injection pipe 7, one end of the liquid injection pipe 7 is connected to the pad body 4 and is connected to the pad cavity 6, the other end extends out of the hollow side wall of the prefabricated member, the liquid injection nozzle is installed at the hollow end of the liquid injection pipe 7, and the liquid injection nozzle may be installed at the end of the pad body or in the middle of the pad body, and its number and position are determined according to the requirement. Taking this embodiment as an example, a large cavity is reserved in the bag pad body, a liquid injection pipe is installed on the bag pad body, one end of the liquid injection pipe is communicated with the bag pad cavity, and the other end of the liquid injection pipe extends out of the hollow side wall of the concrete member. The liquid injection pipe is connected with the bag pad body through vulcanization plastic compression, a liquid injection nozzle is arranged at the empty end of the liquid injection pipe, and the type of the liquid injection nozzle can be but is not limited to a high-pressure water stop needle head (plastic, steel or aluminum alloy). The outer body of the bag cushion and the surface bulge material adopt ethylene propylene diene monomer rubber.
Still further, it is contemplated in this embodiment that the injection fluid may be, but is not limited to, an organic or other inorganic material such as micro-expansive cement, epoxy, two-or multi-component polyurethane, and the like. The curing time of the injected liquid is not more than 48 hours, the mechanical property after curing is stable, and the stress relaxation under long-term compression is not more than 30 percent. After the liquid injection is completed, a liquid injection port at the adjacent hollow end of the liquid injection pipe is closed, so that the extrusion contact force between the sealing bag gasket or the bag gasket and the precast concrete is kept, and the waterproof function of the sealing bag gasket is realized. After the liquid material is solidified, a long-term waterproof and waterproof line can be formed.
Further, in this embodiment, it is also considered that the liquid injection pipe 7 injects the liquid into the sealing bladder pad, and when the liquid injection is cured, the sealing bladder pad or the sealing bladder pad and the precast concrete form a seal.
Further, it is also contemplated in this embodiment that the pad body 4 is an epdm pad, and the thickness of the pad body 4 is 3-5 mm.
Further, it is also contemplated in this embodiment that the bladder pad body 4 is adhered in the member groove 3 at the concrete joint, the width of the bottom of the member groove 3 is 50-55 mm, the width of the top is 60-65 mm, and the depth is 14-15 mm.
Still further, it is considered in this embodiment that the sealing protrusion 5 is integrally formed on the outer surface of the cushion body 4 and extends along the length direction of the cushion body 4, and the cross-sectional shape of the sealing protrusion 5 is rectangular, so that a plurality of waterproof lines are formed by utilizing the local stress concentration characteristic at the protrusion position, and a better waterproof effect is achieved.
Further, in this embodiment, it is also considered that the height of the sealing protrusion 5 is 1-2 mm, the protrusion width is 8-10 mm, and the clearance between adjacent sealing protrusions 5 is 4-5 mm (greater than the designed maximum dislocation amount).
Furthermore, in this embodiment, it may be considered that the groove at the joint between the bottom of the cushion body 4 and the concrete member is fixed by bonding with epoxy resin, so as to prevent the cushion body from falling off.
The active liquid injection extrusion construction method of the waterproof sealing composite structure of the bag cushion elastomer comprises the steps of negative pressure pumping treatment of a closed cavity in the bag cushion elastomer, active liquid injection, liquid injection pressure control, seam sealing, sealing water stop and elastomer solidification, and specifically comprises the following steps:
S1, before the components are assembled, negative pressure treatment is firstly carried out on the cavity of the bag cushion, air in the cavity of the bag cushion is pumped out, the inside of the cavity is in a negative pressure state, the bag cushion is tightly attached to the inner side of the groove, the height of the sealed bag cushion is further reduced, and the collision phenomenon of the bag cushion in the moving and assembling process of the components is further avoided (as shown in figure 2).
S2, after assembling, injecting liquid into the cavity of the bag pad by using the liquid injection pipe, and controlling the joint contact sealing pressure value by controlling the liquid injection pressure, so as to realize the sealing water stop function of the structure. The injection sequence can adopt a two-side synchronous injection method (shown in figure 3) or a step injection method (shown in figure 4) that one side is injected firstly and the other side is injected later, and can also adopt a single-side injection method (shown in figure 5) of a single sealing bag gasket for the joint of the prefabricated part and the cast-in-place concrete. According to calculation, the vacuum degree of the cavity in the elastic body of the bag cushion is 20%, so that the height of the bag cushion can be effectively reduced, and the risk of falling off or damage is reduced. When the injection pressure is controlled to be 0.65MPa, the local extrusion stress exceeding 1.0MPa can be achieved at the convex position of the surface of the bag cushion due to stress concentration, and the bag cushion still has reliable waterproof performance under the working conditions of designing the maximum dislocation (5 mm) and the opening amount (10 mm).
And S3, sealing the liquid injection port after filling liquid injection is completed, ensuring extrusion stress (extrusion contact force) between the sealing bag gaskets and the concrete groove, and realizing a sealing water stop function.
S4, after the coagulation and solidification of the elastomer (injected liquid) in the cavity of the bag pad are completed, a permanent waterproof and waterproof line can be formed, and a long-term reliable waterproof effect can be achieved.
The waterproof structure and the construction method provided by the invention have good application prospects in both cast-in-place concrete structures and assembled concrete structures.
The foregoing examples illustrate the invention in detail, but are merely preferred embodiments of the invention and are not to be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (10)
1. An active extrusion coagulation bag pad elastomer waterproof construction between underground works structure seam, its characterized in that: the waterproof sealing composite structure comprises a sealing bag pad, wherein the sealing bag pad is arranged at a joint of a member in a single or paired manner, a member groove (3) for accommodating the sealing bag pad is formed in the member, the sealing bag pad comprises a bag pad body (4), sealing bulges (5) arranged on the outer surface of the bag pad body (4), a bag pad cavity (6) arranged inside the bag pad body (4) and a liquid injection structure connected with the bag pad cavity (6).
2. The waterproof structure of an elastic body of an active extrusion coagulation bag cushion between seams of an underground engineering structure according to claim 1, wherein the waterproof structure is characterized in that: the component is a cast-in-place concrete component or a precast concrete component.
3. The waterproof structure of an elastic body of an active extrusion coagulation bag cushion between seams of an underground engineering structure according to claim 2, which is characterized in that: the open end of the component groove (3) is larger in size than the closed end.
4. The waterproof structure of an elastic body of an active extrusion coagulation bag cushion between seams of an underground engineering structure according to claim 2, which is characterized in that: the outer contour of the bag cushion body (4) is matched with the shape of the component groove (3).
5. The waterproof structure of an elastic body of an active extrusion coagulation bag cushion between seams of an underground engineering structure according to claim 2, which is characterized in that: the liquid injection structure comprises a liquid injection pipe (7), one end of the liquid injection pipe (7) is connected to the bag pad body (4) and is communicated with the bag pad cavity (6), the other end of the liquid injection pipe extends out of the temporary empty side wall of the prefabricated part, and a liquid injection nozzle is arranged at the temporary empty end of the liquid injection pipe (7).
6. The waterproof structure of an elastic body of an active extrusion coagulation bag cushion between seams of an underground engineering structure according to claim 5, wherein the waterproof structure is characterized in that: and injecting liquid into the sealing bag gasket through the liquid injection pipe (7), and forming sealing between the sealing bag gasket or the sealing bag gasket and the precast concrete after the liquid injection is solidified.
7. The waterproof structure of an elastic body of an active extrusion coagulation bag cushion between seams of an underground engineering structure according to claim 1, wherein the waterproof structure is characterized in that: the bag pad body (4) is an ethylene propylene diene monomer bag pad, and the thickness of the bag pad body (4) is 3-5 mm.
8. The waterproof structure of an elastic body of an active extrusion coagulation bag cushion between seams of an underground engineering structure according to claim 1, wherein the waterproof structure is characterized in that: the bag pad is characterized in that the bag pad body (4) is adhered in a component groove (3) at a concrete joint, the width of the bottom of the component groove (3) is 50-55 mm, the width of the top of the component groove is 60-65 mm, and the depth of the component groove is 14-15 mm.
9. The waterproof structure of an elastic body of an active extrusion coagulation bag cushion between seams of an underground engineering structure according to claim 1, wherein the waterproof structure is characterized in that: the sealing bulge (5) is integrally formed on the outer surface of the bag pad body (4) and extends along the length direction of the bag pad body (4), and the cross section of the sealing bulge (5) is rectangular.
10. A method for constructing an elastic waterproof structure of an active extrusion coagulation bladder pad between seams of an underground engineering structure according to any one of claims 1 to 9, which is characterized in that: the method comprises the following steps:
S1, before assembling the components, firstly, pumping negative pressure into a bag cushion cavity (6) to enable the interior of the bag cushion cavity to be in a negative pressure state, and sealing the bag cushion tightly attached to the inner side of a component groove;
s2, when the components are assembled, the prefabricated components and the prefabricated components can be assembled, and the prefabricated components and the cast-in-place concrete components can also be assembled;
S3, after assembling, filling liquid into the bag pad cavity (6) by using a liquid injection structure, and controlling a joint contact sealing pressure value by controlling the liquid injection pressure, wherein:
The prefabricated parts and the prefabricated parts are assembled, and the liquid injection sequence can adopt a synchronous liquid injection method at two sides or a step-by-step liquid injection method that liquid is injected firstly at one side and then at the other side;
the prefabricated component and the cast-in-place concrete component are assembled by adopting a single-side liquid injection method of a single sealing bag gasket;
s4, after filling of the liquid injection is completed, a liquid injection port of the liquid injection structure is closed, and extrusion stress among the sealing bag gaskets, between the sealing bag gaskets and the concrete groove or between the sealing bag gaskets and the cast-in-place concrete member is guaranteed;
s5, after the coagulation and solidification of the liquid injected into the cavity (6) of the bag pad are completed, a permanent waterproof and waterproof line can be formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410391665.3A CN118187955A (en) | 2024-04-02 | 2024-04-02 | Elastic body waterproof structure of active extrusion coagulation bag pad between seams of underground engineering structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410391665.3A CN118187955A (en) | 2024-04-02 | 2024-04-02 | Elastic body waterproof structure of active extrusion coagulation bag pad between seams of underground engineering structure and construction method |
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|---|---|
| CN118187955A true CN118187955A (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410391665.3A Pending CN118187955A (en) | 2024-04-02 | 2024-04-02 | Elastic body waterproof structure of active extrusion coagulation bag pad between seams of underground engineering structure and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118187955A (en) |
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2024
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