CN116752548A - Waterproof structure of super-risk large foundation pit and construction method - Google Patents
Waterproof structure of super-risk large foundation pit and construction method Download PDFInfo
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- CN116752548A CN116752548A CN202311029530.4A CN202311029530A CN116752548A CN 116752548 A CN116752548 A CN 116752548A CN 202311029530 A CN202311029530 A CN 202311029530A CN 116752548 A CN116752548 A CN 116752548A
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 146
- 239000000463 material Substances 0.000 claims abstract description 59
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 42
- 238000004078 waterproofing Methods 0.000 claims abstract description 25
- 239000011083 cement mortar Substances 0.000 claims description 30
- 239000004568 cement Substances 0.000 claims description 24
- 238000009434 installation Methods 0.000 claims description 15
- 210000003205 muscle Anatomy 0.000 claims description 13
- 230000002441 reversible effect Effects 0.000 claims description 9
- 239000002689 soil Substances 0.000 claims description 9
- 230000008093 supporting effect Effects 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
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- 230000001070 adhesive effect Effects 0.000 claims description 3
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- 238000001764 infiltration Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
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- 238000005086 pumping Methods 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 12
- 238000007599 discharging Methods 0.000 abstract description 9
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- 101150054854 POU1F1 gene Proteins 0.000 description 16
- 230000000694 effects Effects 0.000 description 6
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- 239000010959 steel Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
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Abstract
The application relates to a waterproof structure and a construction method of an ultra-dangerous large foundation pit, and relates to the field of foundation pit waterproofing. The device comprises a reinforcing mesh body paved on a slope in a foundation pit, wherein the reinforcing mesh body consists of a plurality of transverse ribs and vertical ribs, a fixing assembly and an additional assembly are arranged on the reinforcing mesh body, and the fixing assembly comprises a mounting block. According to the application, the waterproof material layers of the waterproof coiled material layer I and the waterproof coiled material layer II and the multi-layer concrete layer are adopted, so that not only is the impermeability of the foundation pit enhanced, but also the stability of the foundation pit is enhanced, the water collecting channel is arranged, water in the foundation pit can be collected intensively, the water collected in the water collecting channel can be discharged by the water discharging component in the inner cavity of the water collecting channel, the water discharging capability of the foundation pit is improved, the additional component is additionally arranged on the reinforcing steel bar net body, the bonding strength between the concrete laid on the reinforcing steel bar net body and the inner wall of the foundation pit can be improved, and the water discharging and impermeability are combined, so that the water preventing capability of the foundation pit is improved as a whole.
Description
Technical Field
The application relates to the field of foundation pit waterproofing, in particular to an ultra-dangerous large foundation pit waterproofing structure and a construction method.
Background
The foundation pit is a soil pit excavated at a building foundation design position according to the substrate elevation and the foundation plane size, and the advantages and disadvantages of the foundation pit structure directly influence the overall engineering quality and progress in engineering construction such as building engineering, hydraulic engineering and the like, and are particularly important for the hydraulic engineering.
When the conventional foundation pit waterproof structure is constructed, firstly, a protective wall is arranged on the inner wall of a foundation pit, when the protective wall is paved, a reinforcing steel bar net is paved firstly to increase the bonding strength between concrete and the inner wall of the foundation pit, then, the concrete is paved to form the protective wall, a cement mortar layer is paved at the bottom of the foundation pit, a first layer of waterproof coiled material is paved along the protective wall and the cement mortar layer, finally, after the first layer of waterproof coiled material is attached, a concrete layer is paved, the concrete layer is cured, and the construction is completed, and in the position with abundant underground water, the bonding degree of the concrete is increased only by the reinforcing steel bar net, the effect is poor, so that the waterproof effect is poor.
Disclosure of Invention
In order to solve the existing technical problems, the application provides a waterproof structure of an ultra-dangerous large foundation pit and a construction method.
The application provides a waterproof structure of an ultra-dangerous large foundation pit and a construction method, which adopts the following technical scheme: the utility model provides a super danger big foundation ditch waterproof construction, including laying the reinforcing bar net body on the slope in the foundation ditch, the reinforcing bar net body comprises a plurality of horizontal muscle and perpendicular muscle, be provided with fixed subassembly and additional subassembly on the reinforcing bar net body, fixed subassembly includes the installation piece, set up two cover on the installation piece and establish the cover groove at the perpendicular muscle of reinforcing bar net body, the installation piece cover is established at the surface of two perpendicular muscle, the middle part of installation piece is run through and is provided with and pricks the round pin, the one end of pricking the round pin extends to the inside of foundation ditch, additional subassembly includes long borer, round cement piece has been pour to the tip of long borer, the surface cover of long borer is equipped with the cover piece, one side of cover piece is provided with the arc elastic shell, the arc elastic shell cover is established on the perpendicular muscle of reinforcing bar net body, the one end that the round cement piece was kept away from to prick the inside of foundation ditch, cement mortar layer's inboard bonding has the waterproofing membrane layer one with the bottom of foundation ditch on the slope, waterproofing membrane layer one's inboard has been pour the waterproofing membrane layer, waterproofing membrane layer two is pour to the inboard of thin concrete layer, the inside of waterproofing membrane layer, the corner is pour, the corner is preset in the inside of waterproofing membrane layer, the corner is set up, the ditch is set up to the inner chamber, the ditch is set up to the ditch is set up.
Through adopting above-mentioned technical scheme, through adopting waterproofing membrane layer one and waterproofing membrane layer two waterproof material layers and multilayer concrete layer, not only strengthened the impermeability of foundation ditch, and the stability of foundation ditch has been strengthened, set up the catchment canal, can concentrate the collection to the water in the foundation ditch, the drainage subassembly of catchment canal inner chamber can be discharged the water of collecting in the catchment canal, increase the drainage capacity of foundation ditch, add additional subassembly on the reinforcing bar net body, can increase the bonding strength of laying between concrete and foundation ditch inner wall on the reinforcing bar net body, drainage combines together with impermeability, improve the waterproof capacity of foundation ditch on the whole.
Preferably, the mounting block is provided with a jack for the pricking pin to pass through, and the inner diameter of the jack is smaller than the outer diameter of the end head of the pricking pin.
Preferably, the pin is welded with a first tip, and the first tip is welded with a plurality of reverse cones.
Through adopting above-mentioned technical scheme, through the cooperation of sharp end one and anti-awl use, the pressure that sharp end one can make prick the round pin prick in the foundation ditch inner wall increases, in the inner wall of the entering foundation ditch of convenient prick the round pin, anti-awl can increase the resistance of pricking the round pin and pull out, then avoided pricking the rocking of round pin, increased the fastness after pricking the round pin and fixed.
Preferably, the sleeve block is provided with a round hole for long drills to pass through, and the inner wall of the round hole is provided with anti-skid patterns contacted with the surface of the long drills.
Through adopting above-mentioned technical scheme, through the setting of anti-skidding line, can make pointed end two when the cover is established on long borer surface, anti-skidding line and long borer contact, increased pointed end two at long borer gliding damping effect, prevent to overlap on the long borer and establish pointed end two after, pointed end two rotates at will, influences the installation.
Preferably, the inner side of the arc elastic shell is provided with an arc bulge, and one side of the arc bulge is propped against the vertical rib of the reinforcing mesh body.
Through adopting above-mentioned technical scheme, through the bellied setting of arc, when arc elasticity shell cover is on the perpendicular muscle of reinforcing bar net body, the arc is protruding, can prevent that the arc elasticity shell from breaking away from the surface that the reinforcing bar net body erects the muscle, has improved the firmness of arc elasticity shell cover on the reinforcing bar net body erects the muscle.
Preferably, the blocking component comprises L-shaped bearing plates which are arranged at the tops of two sides of the inner cavity of the water collecting channel through shooting nails, and the two L-shaped bearing plates are lapped with water grates.
Preferably, the drainage assembly comprises a water pump arranged at the bottom of the inner cavity of the water collecting channel, a drainage pipe is embedded in the cement mortar layer, one end of the drainage pipe extends to the top of the foundation pit, and the other end of the drainage pipe is communicated with a water outlet of the water pump.
Preferably, a filter screen is arranged at the water inlet of the water pump.
Preferably, a waterproof curtain formed by cement-soil mixing piles is arranged on the periphery of the top of the foundation pit.
The construction method of the waterproof structure of the super-risk large foundation pit comprises the following steps:
step one: the periphery at the top of the periphery of the foundation pit is provided with a waterproof curtain formed by cement-soil stirring piles, the waterproof curtain is used for preventing or reducing continuous water stopping bodies adopted when the side wall of the foundation pit and the underground water at the bottom of the foundation pit flow into the foundation pit, the inner wall of the foundation pit is tamped, then a reinforcing mesh body is bound and paved on the slope of the foundation pit, the distance between two vertical ribs of the reinforcing mesh body is matched with the installation blocks, then the two installation blocks are sleeved on the vertical ribs of the reinforcing mesh body, a binding pin is taken up to be plugged into the inner cavity of the jack, the end part of the binding pin is knocked through a hammer, so that a tip I and the binding pin enter the side wall of the foundation pit, the connection between the binding pin and soil can be reinforced by a reverse taper on one surface of the tip I, then a round cement block is taken up, then a sleeve block is sleeved on the surface of a long drill rod, the sleeve block is propped against the round cement block, then the long drill rod is bound into the inside the foundation pit, and the round cement block is connected with the reinforcing mesh body;
step two: then, a cement mortar layer is paved, when the cement mortar layer is paved, the cement mortar layer is sprayed on the reinforcing mesh body, so that concrete covers the reinforcing mesh body, the fixing component and the additional component, the round cement blocks on the additional component increase the bonding capacity and strength of the cement mortar layer and the side wall of the foundation pit, then, the cement mortar layer is paved and leveled again, and chamfering treatment is carried out on the edges and corners, so that the edges and corners are arranged in a chamfering shape; then lay waterproofing membrane layer one, lay waterproofing membrane layer one in time, brush basic unit treatment agent on cement mortar layer in advance, then whole waterproofing membrane layer compaction in the lump makes waterproofing membrane layer one closely laminate with cement mortar layer, and waterproofing membrane layer one overlap joint position and receipts head position carry out hot melt overlap joint and make level, and basic unit treatment agent is: is a cement adhesive;
step three: the fine concrete layer is paved, is mainly used for waterproofing and protecting the first waterproof coiled material layer and has a supporting effect on the foundation pit, the fine concrete layer is paved on the first surface of the waterproof coiled material layer, the additional component is leveled after the paving is finished, and the chamfer angle is formed at the corner; the second waterproof coiled material layer is paved and is mainly used for seepage prevention, the structure and construction key points of the second waterproof coiled material layer are consistent with those of the first waterproof coiled material layer, and the second waterproof coiled material layer is spread out of a foundation pit opening when paved, so that the second waterproof coiled material layer covers the first waterproof coiled material layer, the fine concrete layer and the second waterproof coiled material layer at the foundation pit opening, and the risk of rainwater infiltration from the junction of the waterproof layers is reduced;
step four: the concrete layer is paved mainly for waterproof and supporting the foundation pit; the construction main points of the concrete layer are consistent with those of the fine concrete layer, the concrete layer is paved on the second surface of the waterproof coiled material layer, the second waterproof coiled material layer is protected, a water collecting channel is preset on the concrete layer, accumulated water in a foundation pit can flow into the water collecting channel, an L-shaped bearing plate is installed at the top of the inner side of the water collecting channel through a shooting nail, a water grate is paved on the L-shaped bearing plate for walking, a water level sensor can be installed at the inner side of the water collecting channel, an external controller is respectively electrically connected with a water pump and the water level sensor through wires, the water level sensor transmits water pressure signals to the controller, the water level sensor transmits zero water pressure signals to the controller when the water level in the water collecting channel is lower than the water level sensor, and the controller controls the water pump to stop pumping water, so that water seepage and rainwater collected in the water collecting channel can be pumped out of the foundation pit at the first time, water seepage from the junction of the water collecting channel and the waterproof layer due to long-term accumulation of excessive water is prevented, and the waterproof layer is damaged.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the application, the waterproof coiled material layer I, the waterproof coiled material layer II and the multi-layer concrete layer are adopted, so that the impermeability of the foundation pit is enhanced, the stability of the foundation pit is enhanced, the water collecting channel is arranged, water in the foundation pit can be collected intensively, the water collected in the water collecting channel can be discharged by the water discharging component in the inner cavity of the water collecting channel, the water discharging capability of the foundation pit is improved, the additional component is additionally arranged on the reinforcing steel bar net body, the bonding strength between the concrete laid on the reinforcing steel bar net body and the inner wall of the foundation pit can be improved, and the water discharging and impermeability are combined, so that the water preventing capability of the foundation pit is improved as a whole.
2. According to the application, through the cooperation of the first pointed end and the reverse taper, the first pointed end can increase the pressure of the pricking pin pricking into the inner wall of the foundation pit, so that the pricking pin can conveniently enter the inner wall of the foundation pit, and the reverse taper can increase the resistance of the pricking pin to be pulled out, so that the shake of the pricking pin is avoided, and the firmness of the pricking pin after being fixed is improved.
3. According to the application, through the arrangement of the arc-shaped protrusions, when the arc-shaped elastic shell is sleeved on the vertical ribs of the reinforcing mesh body, the arc-shaped protrusions can prevent the arc-shaped elastic shell from separating from the surfaces of the vertical ribs of the reinforcing mesh body, so that the firmness of the arc-shaped elastic shell sleeved on the vertical ribs of the reinforcing mesh body is improved.
4. According to the application, through the arrangement of the anti-skid patterns, when the second tip is sleeved on the surface of the long drill rod, the anti-skid patterns are in contact with the long drill rod, so that the damping effect of sliding of the second tip on the long drill rod is increased, and the second tip is prevented from rotating randomly after being sleeved on the long drill rod, thereby affecting installation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application, are incorporated in and constitute a part of this specification. The drawings and their description are illustrative of the application and are not to be construed as unduly limiting the application. In the drawings:
fig. 1 is a schematic diagram of the structure of the present application.
Fig. 2 is a perspective view of the mesh reinforcement body, the securing assembly and the attachment assembly of the present application.
Fig. 3 is a perspective exploded view of the structure of the fixing assembly of the present application.
Fig. 4 is a perspective exploded view of the add-on structure of the present application.
Fig. 5 is an enlarged schematic view of the application at point a in fig. 1.
Fig. 6 is an enlarged schematic view of the present application at point B in fig. 4.
Reference numerals illustrate: 1. a foundation pit; 2. a reinforcing mesh body; 3. a fixing assembly; 31. a mounting block; 32. a sleeve groove; 33. bundling pins; 34. a first tip; 35. a jack; 36. reverse taper; 4. an additional component; 41. long drill rod; 42. a circular cement block; 43. a second tip; 44. sleeving blocks; 45. anti-skid lines; 46. an arc-shaped elastic shell; 47. arc-shaped bulges; 5. a cement mortar layer; 6. a waterproof coiled material layer I; 7. a fine concrete layer; 8. a waterproof coiled material layer II; 9. a concrete layer; 10. a water collecting channel; 11. a barrier assembly; 111. an L-shaped bearing plate; 112. shooting nails; 113. a water grate; 12. a drainage assembly; 121. a water pump; 122. a drain pipe; 123. a filter screen; 13. a waterproof curtain.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present application and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present application will be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Embodiment one:
referring to fig. 1-6, the embodiment of the application discloses a waterproof structure of an ultra-dangerous large foundation pit, which comprises a reinforcing mesh body 2 paved on a slope in the foundation pit 1, wherein the reinforcing mesh body 2 consists of a plurality of transverse ribs and vertical ribs, a fixing component 3 and an additional component 4 are arranged on the reinforcing mesh body 2, the fixing component 3 comprises a mounting block 31, two sleeve grooves 32 sleeved on the vertical ribs of the reinforcing mesh body 2 are arranged on the mounting block 31, the mounting block 31 is sleeved on the surfaces of the two vertical ribs, a binding pin 33 is arranged in the middle part of the mounting block 31 in a penetrating way, one end of the binding pin 33 extends into the foundation pit 1, a jack 35 for the binding pin 33 to pass through is arranged on the mounting block 31, the inner diameter of the jack 35 is smaller than the outer diameter of the end head of the binding pin 33, a tip one 34 is welded on the binding pin 33, a plurality of inverse cones 36 are welded on the tip one 34, and the inverse cones 36 are used in a matched mode through the tip one 34 and the inverse cones 36, the tip one 34 can increase the pressure intensity of the binding pin 33 penetrating into the inner wall of the foundation pit 1, the binding pin 33 can conveniently enter the inner wall of the foundation pit 1, the reverse taper 36 can increase the resistance of the binding pin 33 pulling out, shaking of the binding pin 33 is avoided, the firmness of the binding pin 33 after fixing is increased, the additional component 4 comprises a long drill 41, a round cement block 42 is poured at the end part of the long drill 41, a sleeve block 44 is sleeved on the surface of the long drill 41, an arc-shaped elastic shell 46 is arranged on one side of the sleeve block 44, the arc-shaped elastic shell 46 is sleeved on a vertical rib of the reinforcing mesh body 2, one end of the long drill 41 far away from the round cement block 42 is penetrated into the inner wall of the foundation pit 1, a round hole for the long drill 41 to penetrate is formed in the sleeve block 44, an anti-skid pattern 45 contacted with the surface of the long drill 41 is arranged on the inner wall of the round hole, the anti-skid pattern 45 is contacted with the long drill 41 through the arrangement of the anti-skid pattern 45 when the tip two 43 is sleeved on the surface of the long drill 41, the damping effect of the tip II 43 on the long drill rod 41 is increased, the tip II 43 is prevented from being sleeved on the long drill rod 41, the tip II 43 rotates randomly to affect installation, the inner side of the arc-shaped elastic shell 46 is provided with the arc-shaped bulge 47, one side of the arc-shaped bulge 47 is propped against the vertical ribs of the reinforcing steel mesh body 2, the arc-shaped bulge 47 can prevent the arc-shaped elastic shell 46 from separating from the surface of the vertical ribs of the reinforcing steel mesh body 2 when the arc-shaped elastic shell 46 is sleeved on the vertical ribs of the reinforcing steel mesh body 2 through the arrangement of the arc-shaped bulge 47, the firmness of the arc-shaped elastic shell 46 sleeved on the vertical ribs of the reinforcing steel mesh body 2 is improved, the cement mortar layer 5 is uniformly poured on the slope of the foundation pit 1, the inner side of the cement mortar layer 5 is adhered with the waterproof coiled material layer I6, the inner side of the waterproof coiled material layer I6 is poured with the fine concrete layer 7, the inner side of the waterproof coiled material layer I8 is poured with the waterproof coiled material layer I, the inner side of the waterproof coiled material layer I8 is poured with the concrete layer I9, the corner of the concrete layer 9 is poured with the water collecting channel 10, the inner cavity of the water collecting channel 10 is provided with a preset blocking component 11, the inner cavity of the water collecting channel 10 and the inner cavity of the preset water retaining component 12 and the surface of the water retaining component 12 are respectively, the firmness of the foundation pit 1 is provided with the curtain 13, and the waterproof curtain 13 is formed by the cement curtain and the stirring piles.
Embodiment two:
referring to fig. 1 and 5, the blocking assembly 11 includes an L-shaped supporting plate 111 installed at the top of two sides of the inner cavity of the water collecting channel 10 through a nail 112, water grates 113 are lapped on the two L-shaped supporting plates 111, the water draining assembly 12 includes a water pump 121 installed at the bottom of the inner cavity of the water collecting channel 10, a water draining pipe 122 is embedded in the cement mortar layer 5, one end of the water draining pipe 122 extends to the top of the foundation pit 1, the other end of the water draining pipe 122 is communicated with a water outlet of the water pump 121, and a filter screen 123 is installed at a water inlet of the water pump 121.
The construction method of the waterproof structure of the super-risk large foundation pit comprises the following steps:
step one: the periphery at the top of the periphery of the foundation pit 1 is provided with a waterproof curtain 13 formed by cement-soil stirring piles, which is used for preventing or reducing continuous waterproof bodies adopted by the foundation pit side wall and foundation pit bottom groundwater flowing into the foundation pit, the inner wall of the foundation pit 1 is tamped, then the steel bar net body 2 is bound and paved on the slope of the foundation pit 1, the distance between two vertical ribs of the steel bar net body 2 is matched with the mounting blocks 31, then the two mounting blocks 31 are sleeved on the vertical ribs of the steel bar net body 2, then the end part of the binding pin 33 is knocked by a hammer, so that the tip end 34 and the binding pin 33 enter the side wall of the foundation pit 1, the reverse taper 36 on the surface of the tip end 34 can reinforce the connection between the binding pin 33 and soil, then the round cement block 42 is taken up, then the sleeve block 44 is sleeved on the surface of the long drill rod 41, the sleeve block 44 is abutted against the round cement block 42, then the long drill rod 41 is led into the interior of the foundation pit 1, and the arc-shaped elastic shell 46 on the sleeve block 44 is sleeved on the vertical ribs of the steel bar net body 2, so that the round cement block 42 is connected with the steel bar net 2;
step two: then, a cement mortar layer 5 is paved, when the cement mortar layer 5 is paved, the cement mortar layer 5 is sprayed on the reinforcing mesh body 2, so that concrete covers the reinforcing mesh body 2, the fixing component 3 and the additional component 4, the round cement blocks 42 on the additional component 4 increase the bonding capacity and strength of the cement mortar layer 5 and the side wall of the foundation pit 1, then, the cement mortar layer 5 is paved and leveled, and chamfering treatment is carried out on the edges and corners, so that the edges and corners are arranged in a chamfering shape; then lay waterproofing membrane layer one 6, brush basic unit treatment agent on cement mortar layer 5 in advance, then whole waterproofing membrane layer one 6 and compaction make waterproofing membrane layer one 6 closely laminate with cement mortar layer 5, waterproofing membrane layer one 6 overlap joint position and receipts head position carry out hot melt overlap joint and make level, basic unit treatment agent is 1:50 a cement adhesive;
step three: the fine concrete layer 7 is paved, is mainly used for waterproofing and protecting the waterproof coiled material layer I6 and has a supporting effect on a foundation pit, the fine concrete layer 7 is paved on the surface of the waterproof coiled material layer I6, the additional component 4 is leveled after the paving is finished, and chamfer angles are formed at the edge angles; then, a waterproof coiled material layer II 8 is paved and is mainly used for seepage prevention, the structure and construction key points of the waterproof coiled material layer II 8 are consistent with those of the waterproof coiled material layer I6, and the waterproof coiled material layer II is different in that the waterproof coiled material layer II 8 extends outwards of a foundation pit opening when paved, so that the waterproof coiled material layer I6, the fine concrete layer 7 and the waterproof coiled material layer II 8 at the foundation pit 1 opening are covered, and the risk of rainwater infiltration from a waterproof layer junction is reduced;
step four: the concrete layer 9 is mainly used for waterproofing and supporting the foundation pit 1; the construction gist of the concrete layer 9 is consistent with that of the fine concrete layer 7, the concrete layer 9 is paved on the surface of the waterproof coiled material layer II 8, the waterproof coiled material layer II 8 is protected, a water collecting channel 10 is preset on the concrete layer 9, accumulated water in a foundation pit can flow into the water collecting channel 10, an L-shaped bearing plate 111 is installed on the top of the inner side of the water collecting channel 10 through a nail 112, then a water grate 113 is paved on the L-shaped bearing plate 111 for walking, a water level sensor can be installed on the inner side of the water collecting channel 10 for explanation, an external controller is electrically connected with a water pump 121 and the water level sensor through wires respectively, the water level sensor transmits a water pressure signal to the controller, the controller controls the water pump 121 to pump water, when the water level in the water collecting channel 10 is lower than the water level sensor, the water level sensor transmits a zero water pressure signal to the controller, and the controller controls the water pump 121 to stop pumping, so that water seepage and rainwater collected in the water collecting channel 10 can be pumped away from the foundation pit at the first time, the water level sensor can be prevented from being permeated from the water collecting channel 10 and a waterproof layer junction position due to long-term accumulation.
To sum up: according to the waterproof structure and the construction method of the super-risk large foundation pit, the impermeability of the foundation pit is enhanced by adopting the waterproof coiled material layer I6, the waterproof coiled material layer II and the multi-layer concrete layer II, the stability of the foundation pit is enhanced, the water collecting channel 10 is arranged, water in the foundation pit can be collected intensively, the water collected in the water collecting channel 10 can be discharged by the water discharging component 12 in the inner cavity of the water collecting channel 10, the water discharging capacity of the foundation pit is improved, the additional component 4 is additionally arranged on the reinforcing steel bar net body 2, the bonding strength between concrete laid on the reinforcing steel bar net body 2 and the inner wall of the foundation pit can be increased, and the water discharging and impermeability are combined, so that the waterproof capacity of the foundation pit is improved as a whole.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a big foundation ditch waterproof construction of super danger which characterized in that: including laying reinforcing bar net body (2) on slope in foundation ditch (1), reinforcing bar net body (2) comprise a plurality of horizontal muscle and perpendicular muscle, be provided with fixed subassembly (3) and additional subassembly (4) on reinforcing bar net body (2), fixed subassembly (3) are including installation piece (31), set up two cover on installation piece (31) and establish cover groove (32) at reinforcing bar net body (2) perpendicular muscle, installation piece (31) cover is established on the surface of two perpendicular muscle, the middle part of installation piece (31) is run through and is provided with prick round pin (33), the one end of prick round pin (33) extends to the inside of foundation ditch (1), additional subassembly (4) are including long borer (41), round cement piece (42) have been pour to the tip of long borer (41), the surface cover of long borer (41) is equipped with cover piece (44), one side of cover piece (44) is provided with arc elastic shell (46), arc elastic shell (46) cover is established on cement net body (2) perpendicular surface of muscle, one end (5) is gone into in cement layer (1) and is had the inside of foundation ditch (5) to prick the one end of round cement layer (1), the waterproof coiled material is characterized in that a fine concrete layer (7) is poured on the inner side of the first waterproof coiled material layer (6), a second waterproof coiled material layer (8) is poured on the inner side of the fine concrete layer (7), a concrete layer (9) is poured on the inner side of the second waterproof coiled material layer (8), a water collecting channel (10) is preset at the corner of the concrete layer (9), and a blocking component (11) and a drainage component (12) are arranged in the inner cavity of the water collecting channel (10).
2. The ultra-dangerous large foundation pit waterproof structure according to claim 1, wherein: the mounting block (31) is provided with a jack (35) for the pricking pin (33) to pass through, and the inner diameter of the jack (35) is smaller than the outer diameter of the end head of the pricking pin (33).
3. The ultra-dangerous large foundation pit waterproof structure according to claim 2, wherein: a tip I (34) is welded on the binding pin (33), and a plurality of reverse cones (36) are welded on the tip I (34).
4. The ultra-dangerous large foundation pit waterproof structure according to claim 3, wherein: the sleeve block (44) is provided with a round hole for the long drill rod (41) to pass through, and the inner wall of the round hole is provided with anti-slip patterns (45) contacted with the surface of the long drill rod (41).
5. The ultra-dangerous large foundation pit waterproof structure of claim 4, wherein: the inner side of the arc-shaped elastic shell (46) is provided with an arc-shaped bulge (47), and one side of the arc-shaped bulge (47) is propped against the vertical ribs of the reinforcing mesh body (2).
6. The ultra-dangerous large foundation pit waterproof structure of claim 5, wherein: the blocking assembly (11) comprises L-shaped bearing plates (111) which are arranged at the tops of two sides of the inner cavity of the water collecting channel (10) through shooting nails (112), and the two L-shaped bearing plates (111) are lapped with water grates (113).
7. The ultra-dangerous large foundation pit waterproof structure of claim 6, wherein: the drainage assembly (12) comprises a water pump (121) arranged at the bottom of an inner cavity of the water collecting channel (10), a drainage pipe (122) is embedded in the cement mortar layer (5), one end of the drainage pipe (122) extends to the top of the foundation pit (1), and the other end of the drainage pipe (122) is communicated with a water outlet of the water pump (121).
8. The ultra-dangerous large foundation pit waterproof structure of claim 7, wherein: a filter screen (123) is arranged at the water inlet of the water pump (121).
9. The ultra-dangerous large foundation pit waterproof structure of claim 8, wherein: and a waterproof curtain (13) formed by cement-soil stirring piles is arranged on the periphery of the top of the foundation pit (1).
10. The construction method of the super-risk large foundation pit waterproof structure is used for the super-risk large foundation pit waterproof structure as set forth in any one of claims 1 to 9, and is characterized by comprising the following steps:
step one: a waterproof curtain (13) formed by cement-soil stirring piles at the periphery of the top of the foundation pit (1) is used for preventing or reducing continuous waterproof bodies adopted by the foundation pit side wall and foundation pit bottom underground water flowing into the foundation pit, then the inner wall of the foundation pit (1) is tamped, then the reinforcing mesh body (2) is bound and paved on the slope of the foundation pit (1), the distance between two vertical ribs of the reinforcing mesh body (2) is matched with the installation blocks (31), then the two installation blocks (31) are sleeved on the vertical ribs of the reinforcing mesh body (2), then the pricking pin (33) is taken up to be plugged into the inner cavity of the jack (35), the end part of the pricking pin (33) is knocked through a hammer, so that a tip one (34) and the pricking pin (33) enter the side wall of the foundation pit (1), the reverse taper (36) on the surface of the tip one (34) can strengthen the connection between the pricking pin (33) and soil, then the circular block (42) is taken up, the sleeve block (44) is sleeved on the surface of the long block (41), the circular block (44) is sleeved on the surface of the cement block (42), and the circular block (44) is abutted against the circular block (42) to the cement block (42), so that the inner part of the reinforcing mesh body (2) is connected with the circular block (42) in a mode;
step two: then, a cement mortar layer (5) is paved, when the cement mortar layer (5) is paved, the cement mortar layer (5) is sprayed on the reinforcing mesh body (2) firstly, so that concrete covers the reinforcing mesh body (2), the fixing component (3) and the additional component (4), the bonding capacity and strength of the cement mortar layer (5) and the side wall of the foundation pit (1) are improved by the round cement block (42) on the additional component (4), then, the cement mortar layer (5) is paved and leveled again, and chamfering treatment is carried out on the edges and corners, so that the edges and corners are arranged in a chamfering shape; then laying a first waterproof coiled material layer (6), when laying the first waterproof coiled material layer (6), brushing a base layer treating agent on the cement mortar layer (5) in advance, and then paving the first waterproof coiled material layer (6) and compacting to enable the first waterproof coiled material layer (6) to be tightly attached to the cement mortar layer (5), wherein the overlapping part and the head collecting part of the first waterproof coiled material layer (6) are subjected to hot melting and overlapping and leveling, and the base layer treating agent is 1:50 a cement adhesive;
step three: the fine concrete layer (7) is paved, is mainly used for waterproofing and protecting the waterproof coiled material layer I (6) and has a supporting effect on a foundation pit, the fine concrete layer (7) is paved on the surface of the waterproof coiled material layer I (6), the additional component (4) is leveled after the paving is finished, and the chamfer angle is formed at the corner; the second waterproof coiled material layer (8) is paved and mainly used for seepage prevention, the structure and construction key points of the second waterproof coiled material layer (8) are consistent with those of the first waterproof coiled material layer (6), and the second waterproof coiled material layer (8) is paved and extends outwards of the foundation pit opening, so that the second waterproof coiled material layer (8) covers the first waterproof coiled material layer (6), the fine concrete layer (7) and the second waterproof coiled material layer (8) at the foundation pit (1) opening, and the risk of rainwater infiltration from the waterproof layer juncture is reduced;
step four: the concrete layer (9) is paved and mainly used for waterproofing and supporting the foundation pit (1); the construction main points of the concrete layer (9) are consistent with the fine concrete layer (7), the construction main points are different in that the concrete layer (9) is paved on the surface of the waterproof coiled material layer II (8), the waterproof coiled material layer II (8) is protected, a water collecting channel (10) is preset on the concrete layer (9), accumulated water in a foundation pit can flow into the water collecting channel (10), an L-shaped bearing plate (111) is installed on the top of the inner side of the water collecting channel (10) through a shooting nail (112), then the water grate (113) is paved on the L-shaped bearing plate (111) for walking, a water level sensor is arranged on the inner side of the water collecting channel (10), an external controller is respectively connected with the water pump (121) and the water level sensor through wires, the water level sensor transmits a water pressure signal to the controller, the controller controls the water pump (121) to pump water, when the water level in the water collecting channel (10) is lower than the water level sensor, the water level sensor transmits a zero water pressure signal to the controller, the controller controls the water pump (121) to stop pumping water, and the water collecting channel (10) is broken, water collecting and the water from the water collecting channel (10) is prevented from penetrating into the water collecting channel (10) at the water collecting channel and the water collecting channel for a long time, and the water collecting channel is prevented from being accumulated in the water collecting channel and seeping water collecting channel.
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