CN111894124A - Waterproof construction method for large-area civil air defense basement - Google Patents
Waterproof construction method for large-area civil air defense basement Download PDFInfo
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- CN111894124A CN111894124A CN202010780388.7A CN202010780388A CN111894124A CN 111894124 A CN111894124 A CN 111894124A CN 202010780388 A CN202010780388 A CN 202010780388A CN 111894124 A CN111894124 A CN 111894124A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/0007—Base structures; Cellars
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
Abstract
The application relates to the field of building construction, in particular to a large-area civil air defense basement waterproof construction method, which comprises the following steps of S1: excavating a foundation pit; s2: pouring a base layer; s3: building a first wall body; s4: gel materials are used at the joint of the first waterproof board and the base layer and the joint of the first wall body to form smooth joint faces; s5: laying a first waterproof coiled material; s6: bonding a second waterproof roll; s7: laying a first structural layer; s8: pre-burying a reinforcing mesh; s9: paving a third waterproof coiled material; s10: gel substances are filled between the positions, extending along the first wall body, of the first waterproof coiled material and the third waterproof coiled material; s11: laying a second structural layer; s12: and laying a horizontal surface layer. This application has the effect that reduces ponding in the basement.
Description
Technical Field
The application relates to the field of building construction, in particular to a large-area civil air defense basement waterproof construction method.
Background
Many buildings require a deeper foundation, and in order to utilize the height, a basement is built under the bottom layer of the building, so that the use area can be increased, and the room filling soil can be saved, thereby becoming common construction of buildings in recent years.
In the basement waterproof construction method, waterproof coiled materials, concrete and the like are directly paved or poured for basement waterproofing, so that the leakage of outside water to the inner wall of the basement is reduced.
In view of the above-mentioned related art, the inventors consider that there is a drawback that water is easily accumulated inside the basement.
Disclosure of Invention
In order to reduce the condition of ponding in the basement, the application provides large tracts of land people's air defense basement waterproofing construction method.
The application provides a large tracts of land people's air defense basement waterproofing method adopts following technical scheme:
the waterproof construction method of the large-area civil air defense basement comprises the following steps of S1: excavating a soil layer according to the underground water level elevation and the on-site enclosure structure to form a basement foundation pit structure, and tamping the soil layer on the inner side of the foundation pit; s2: pouring a base layer on the surface of the foundation pit; s3: building a first wall body which forms a basement in a surrounding mode and inclines towards the inner side on the periphery of the base layer, pouring first waterproof boards at internal corners formed between the base layer and the first wall body and between the first wall bodies on two adjacent sides and the base layer, and bending the first waterproof boards towards the internal corners along the horizontal plane; s4: gel materials are used for forming smooth connecting surfaces at the connecting position of the first waterproof board and the base layer and the connecting position of the first wall body; s5: laying a first waterproof coiled material on the surface of the base layer, wherein the first waterproof coiled material extends to the side wall of the first wall body along the first waterproof board and is fixed on the first wall body; s6: a second waterproof roll is arranged at the joint corner of the adjacent first wall; s7: laying a first structural layer on the first waterproof coiled material to enable the thickness of the first structural layer to be smaller than the height of the first waterproof coiled material and the fixed part of the first wall; s8: pre-burying a reinforcing mesh in the first structural layer; s9: a third waterproof coiled material is laid on the first structural layer, extends upwards along the side wall of the first wall body and is fixed at the position, above the first waterproof coiled material, of the first wall body; s10: filling a gel substance between the positions of the first waterproof coiled material and the third waterproof coiled material extending along the first wall body, and vibrating the gel substance to reduce a cavity between the first waterproof coiled material and the third waterproof coiled material; s11: laying a second structural layer on the second waterproof layer, wherein the side surface, far away from the third waterproof coiled material, of the second structural layer is inclined downwards towards one side, the inclination angle is smaller than 15 degrees, a drainage blind ditch is preset on the downward inclined side of the second structural layer through a first template, and a drainage blind ditch communicated with the drainage blind ditch is preset on the surface of the second structural layer through a second template; s12: and a broken stone leveling layer is filled in the drainage blind groove, a surface layer with a horizontal surface is laid on the surface of the second structural layer, a water inlet pipe is pre-embedded in the position of the surface layer corresponding to the drainage blind groove, one end of the water inlet pipe extends into the drainage blind groove, and a rainwater grate is laid on the surface of the drainage blind groove.
Through adopting above-mentioned technical scheme, increase the water-proof effects of basement inboard through first waterproofing membrane, second waterproofing membrane, third waterproofing membrane, the water in the basement can flow to the drainage camera obscura by the inlet tube, then assembles in the drainage underdrain by the drainage camera obscura to reduce the ponding in the basement.
Preferably, in step S2, the base layer is poured in multiple times, an annular third template is arranged along the boundary of the preset base layer, an annular fourth template is arranged between the third templates, a first pouring is performed between the third template and the fourth template, a fourth template with a smaller area is arranged between the fourth templates after the first pouring is performed, the number of the fourth templates in the fourth template is set to be n according to the area of the preset base layer, and the pouring between the fourth template and the fourth template is performed from outside to inside for the second time to the nth time in sequence.
By adopting the technical scheme, the base layer with larger area is poured in multiple times, and the condition that the base layer is cracked due to the shrinkage performance of concrete when the concrete is solidified can be reduced.
Preferably, step S5 is preceded by: and treating the base layer to make the surface of the base layer smooth, and paving a leveling layer on the surface of the base layer.
Through adopting above-mentioned technical scheme, the screed-coat increases the roughness on basic unit's surface, and the waterproofing membrane of being convenient for is fixed in basic unit's surface.
Preferably, step S4 is preceded by: connecting steel bars stretching out of the outer side of the first wall body are pre-embedded in the first wall body, one end, located on the outer side of the first wall body, of each connecting steel bar is poured to form a second waterproof board, the second waterproof board is located above the part, fixed to the first wall body, of the third waterproof coiled material, and the third waterproof coiled material is bonded to the lower end face of the second waterproof board along the side edge of the first wall body.
Through adopting above-mentioned technical scheme, the second waterproof board has the connection structure who increases between the first wall body of third waterproofing membrane to make the difficult book of third waterproofing membrane stick up, and increase the water-proof effects between third waterproofing membrane and the first waterproofing membrane.
Preferably, a second wall body is built on the outer side of the first wall body, a gap is reserved between the first wall body and the second wall body, asphalt hemp threads are filled between the first wall body and the second wall body to form a waterproof layer, and backfill is filled between the first wall body and the side wall of the foundation pit.
Through adopting above-mentioned technical scheme, the second wall body plays the effect of protection to first wall body, fills pitch hemp between first wall body and second wall body, increases the waterproof performance between first wall body and the second wall body.
Preferably, asphalt paste is coated on the surfaces of the connecting joints among the base layers poured in multiple times, so that the surfaces of the base layers are smooth.
Through adopting above-mentioned technical scheme, asphalt ointment increases the water-proof effects of basic unit junction.
Preferably, a circular hole is formed in the fourth template, and reinforcing steel bars embedded in the base layers poured at two adjacent times penetrate through the circular hole.
Through adopting above-mentioned technical scheme, the reinforcing bar increases the structural strength of basic unit junction, makes the joint line of basic unit be difficult for splitting.
Preferably, the water storage well with the horizontal position lower than the drainage blind ditch is excavated on the outer side of the second wall body, a communicating pipe is buried between the water storage well and the drainage blind ditch, and a water suction pump for pumping accumulated water in the water storage well is installed in the water storage well in advance.
Through adopting above-mentioned technical scheme, the water storage well is used for storing drainage blind ditch exhaust ponding to reduce the condition of ponding in the basement.
Preferably, step S3 further includes: the method comprises the steps of prefabricating a porous plate with a plurality of mutually communicated through holes, wherein the through holes are communicated with a water storage well, arranging a fifth template on the outer side of a second wall body, bonding the porous plates in parallel along the vertical direction to the outer side wall of the second wall body, pouring gel materials between the porous plates and between the fifth template, dismantling the fifth template after the gel materials are solidified, covering a sixth template on the side surface of the porous plate far away from the second wall body, filling backfill soil between the second wall body and the side wall of the foundation pit, tamping the backfill soil, and dismantling the sixth template.
Through adopting above-mentioned technical scheme, the ponding in the porous plate guide backfill flows into the water storage well to reduce the effect that the ponding in the backfill permeates into the basement by second wall body, first wall body.
To sum up, the application comprises the following beneficial technical effects:
through the water-proof effects of first waterproofing membrane, second waterproofing membrane, third waterproofing membrane increase the basement inside, water in the basement can flow to the drainage camera obscura by the inlet tube, then assembles in the drainage blind ditch by the drainage camera obscura to reduce the ponding in the basement.
Drawings
FIG. 1 is a cross-sectional view of a basement in a waterproof construction method for a large-area civil air defense basement according to an embodiment of the application;
fig. 2 is a schematic structural diagram of a second wall body close to a water storage well in the embodiment of the application.
Description of reference numerals: 1. a base layer; 11. reinforcing steel bars; 2. a first wall; 21. a first waterproof sheet; 22. connecting reinforcing steel bars; 23. a second waterproof sheet; 24. leveling layer; 3. a second wall; 31. a waterproof layer; 32. a perforated plate; 321. a connecting pipe; 4. a water storage well; 41. a water pump; 5. a first waterproof roll; 6. a first structural layer; 61. a reinforcing mesh; 7. a third waterproof coiled material; 8. a second structural layer; 81. draining an underdrain; 82. a drainage hidden groove; 83. a rainwater grate; 9. a surface layer; 91. and (4) a water inlet pipe.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses a large-area civil air defense basement waterproof construction method. Referring to fig. 1, the waterproof construction method of the large-area civil air defense basement comprises the following steps:
s1: and excavating a soil layer to form a basement foundation pit structure according to the underground water level elevation and the on-site enclosure structure, and tamping the soil layer on the inner side of the foundation pit.
Specifically, the depth of the foundation pit is within four meters, and the foundation pit is excavated by slope excavation, so that the foundation pit is not easy to collapse.
S2: and pouring a base layer 1 on the surface of the foundation pit.
Specifically, the base layer 1 is poured in multiple times, annular third templates are arranged along the boundary of the preset base layer 1, annular fourth templates are arranged between the third templates, circular holes are formed in the fourth templates, and reinforcing steel bars 11 embedded in the base layer 1 poured in two adjacent times penetrate through the circular holes; pouring for the first time between the third template and the fourth template, arranging the fourth template with smaller surrounding area between the fourth templates after the first pouring is formed, setting the number of the fourth templates in the fourth template to be n according to the area of the preset base layer 1, and pouring between the fourth template and the fourth template for the second time to the nth time from outside to inside in sequence.
Before the first pouring, fixing a third template and a fourth template, enabling the support structures of the third template and the fourth template to be positioned at the sides far away from each other, fixing reinforcing steel bars 11 at the positions, corresponding to the circular holes, of the fourth template at the sides far away from the third template, performing the first pouring between the third template and the fourth template, enabling part of the reinforcing steel bars 11 to be positioned in the part of the base layer 1 which is poured for the first time, then fixing another fourth template again in the fourth template to form annular fourth templates which are arranged inwards in sequence, enabling the support structures of the other fourth template to be positioned at the inner side of the support structures, then detaching the fourth template which is matched and poured previously, performing the nth pouring between the part of the base layer 1 which is poured and the other fourth template, wherein in the embodiment, n is more than 1, and the reinforcing steel bars 11 increase the structures between the parts of the base layer 1 which are poured separately, the base layer 1 has good anti-cracking effect, and the base layer 1 poured each time is annular, so that the base layer 1 has good structural strength, and the base layer 1 is not easy to be damaged due to slight geological activity.
Asphalt factice is coated on the surfaces of connecting joints among the base layers 1 which are poured in a grading way, so that the surfaces of the base layers 1 are smooth, and the waterproofness of the connecting joints of the base layers 1 is improved. The base layer 1 is poured for multiple times, and the base layer 1 cannot be poured once when the adaptive large-area construction is facilitated.
S3: the first wall body 2 which forms the basement and inclines towards the inner side is built around the base layer 1, the internal corner formed between the base layer 1 and the first wall body 2 and the internal corner formed between the first wall body 2 on two adjacent sides and the base layer 1 are poured with the first waterproof board 21, and the first waterproof board 21 bends towards the internal corner along the horizontal plane.
Specifically, adopt concrete placement to form first waterproof board 21, first waterproof board 21 is crooked towards reentrant corner department, reduces reentrant corner department ponding, and is convenient for first waterproofing membrane 5 to bond.
Building second wall body 3 in the first wall body 2 outside, leave the clearance between first wall body 2 and the second wall body 3, it forms waterproof layer 31 to fill pitch fiber crops between first wall body 2 and the second wall body 3, second wall body 3 plays the effect of protection to first wall body 2, waterproof layer 31 has the effect that increases the waterproof ability between first wall body 2 and the second wall body 3, and pitch fiber crops has certain compressible performance, if second wall body 3 damages under the effect of external force, the damage degree is in the within range that waterproof layer 31 can deform, then the influence of the damage of second wall body 3 to first wall body 2 is less.
Prefabricating porous plates 32 with a plurality of mutually communicated through holes in advance, wherein the through holes are communicated with a water storage well 4, arranging a fifth template on the outer side of the second wall body 3, adhering the vertically parallel porous plates 32 to the outer side wall of the second wall body 3, pouring gel substances between the porous plates 32 and the fifth template, removing the fifth template after the gel substances are solidified, covering a sixth template on the side surface of the porous plates 32 far away from the second wall body 3, filling backfill soil between the second wall body 3 and the side wall of the foundation pit, tamping the backfill soil, and removing the sixth template.
Referring to fig. 1 and 2, specifically, the thickness of the sixth form is less than 30mm, in this embodiment, 20mm, the gel material is concrete, a plurality of through holes are formed in the side of the porous plate 32 away from the second wall 3, the through holes are communicated with each other, the porous plates 32 are horizontally arranged on the second wall 3 at intervals, the long sides of the porous plates 32 are vertically arranged, another porous plate 32 with a horizontally arranged long side is poured on the lower side of the porous plates 32, the porous plates 32 with the vertically arranged long sides are connected into a whole by the porous plates 32 with the horizontally arranged long sides, the through holes in the porous plates 32 with the horizontally arranged long sides are arranged on the side of the porous plates 32 close to the vertically arranged long sides, so that the through holes are communicated with each other, the connecting pipes 321 are preset on the porous plates 32 with the horizontally arranged long sides, and the sixth form is removed, so that a gap is formed between the porous plates 32 and, the water in the backfill flows into the porous plate 32 through the through holes.
Referring to fig. 1, a water storage well 4 is formed by excavating the outer side of the second wall 3, a wall of the water storage well 4 is formed by pouring concrete, the height of the upper end surface of the water storage well 4 is higher than that of the upper end surface of the perforated plate 32 horizontally arranged on the long side, a water suction pump 41 for pumping accumulated water in the water storage well 4 out of the ground is installed in the water storage well 4 in advance, a connecting hole for allowing the connecting pipe 321 to pass through is reserved in the water storage well 4 when the wall of the well is poured, and the water in the perforated plate 32 is discharged into the water storage well.
Connecting steel bars 22 extending out of the first wall 2 are embedded in the first wall 2, and a second waterproof board 23 is formed by pouring at one end of each connecting steel bar 22 located on the outer side of the first wall 2.
S4: gel materials are used for forming smooth connecting surfaces at the connecting position of the first waterproof board 21 and the base layer 1 and the connecting position of the first wall body 2.
Handle basic unit 1 and make its surface smooth, and lay screed-coat 24 on basic unit 1 surface, screed-coat 24's thickness is preferably 2mm, screed-coat 24 has the roughness that increases basic unit 1 surface to be convenient for bond the effect of first waterproofing membrane 5.
S5: the first waterproof roll 5 is laid on the surface of the base layer 1, and the first waterproof roll 5 extends towards the side wall of the first wall 2 along the first waterproof board 21 and is fixed on the first wall 2.
First waterproofing membrane 5 is close to first waterproofing membrane 21 department and upwards extends along first waterproofing membrane 21, and first waterproofing membrane 21 is close to the side of first waterproofing membrane 5 for the arcwall face, is convenient for with the laminating of first waterproofing membrane 5.
S6: and a second waterproof roll is arranged at the joint angle of the adjacent first wall body 2.
The second waterproofing membrane increases the water-proof effects of corner department.
S7: and laying a first structural layer 6 on the first waterproof coiled material 5, wherein the thickness of the first structural layer 6 is smaller than the height of a fixed part of the first waterproof coiled material 5 and the first wall body 2.
S8: the reinforcing mesh 61 is embedded in the first structural layer 6.
S9: lay third waterproofing membrane 7 on first structural layer 6, third waterproofing membrane 7 upwards extends and is fixed in the position that first wall body 2 is located first waterproofing membrane 5 top along the lateral wall of first wall body 2.
Specifically, the second waterproof board 23 is located the part top that third waterproof coiled material 7 and first wall body 2 are fixed and third waterproof coiled material 7 bonds terminal surface under second waterproof board 23 along the side that first wall body 2 set up, and second waterproof board 23 has location connection third waterproof coiled material 7, increases the connection structure of third waterproof coiled material 7 and first wall body 2, makes third waterproof coiled material 7 be convenient for difficult the book stick up, and reduces and intake between third waterproof coiled material 7 and the second waterproof coiled material.
S10: the gel substance is filled between the positions, extending along the first wall body 2, of the first waterproof coiled material 5 and the third waterproof coiled material 7, and the gel substance is vibrated, so that a cavity between the first waterproof coiled material 5 and the third waterproof coiled material 7 is reduced.
Specifically, the gel material is the concrete, has the concrete between third waterproofing membrane 7 and the first waterproofing membrane 5, and the concrete has the space of filling between first waterproofing membrane 5 and the third waterproofing membrane 7 because of second waterproofing membrane and formation, and increases the connection structure's between first waterproofing membrane 5 and the third waterproofing membrane 7 effect.
S11: lay second structural layer 8 on second waterproof layer 31, the side that third waterproofing membrane 7 was kept away from to second structural layer 8 inclines downwards towards one side, and the angle of slope is less than 15, presets drainage blind ditch 81 through first template in the one side of second structural layer 8 downward sloping, presets drainage blind ditch 82 with drainage blind ditch 81 intercommunication through the second template on second structural layer 8 surface.
A communicating pipe is buried between the water storage well 4 and the drainage blind ditch 81, the horizontal position of the upper end surface of the water storage well 4 is lower than the drainage blind ditch 81, the communicating pipe is downwards inclined from one end close to the drainage blind ditch 81 to one end close to the water storage well 4, and the communicating pipe is arranged on the side wall of the drainage blind ditch 81 close to the bottom; communicating pipe is worn out the 3 outsides of second wall body by first wall body 2, second wall body 3 and third water roll material 7, all adopts pitch oleamen waterproof seal between communicating pipe and first wall body 2, second wall body 3, third water roll material 7, and water storage well 4 reserves the intercommunicating pore that lets communicating pipe pass when pouring the wall of a well.
S12: the drainage hidden channel 82 is filled with a gravel leveling layer 24, the surface layer 9 with a horizontal surface is paved on the surface of the second structural layer 8, a water inlet pipe 91 is embedded in the position, corresponding to the drainage hidden channel 82, of the surface layer 9, one end of the water inlet pipe 91 extends into the drainage hidden channel 82, and a rainwater grate 83 is paved on the surface of the drainage hidden channel 81.
Specifically, the diameter of the water inlet pipe 91 is less than 20mm, in this embodiment, 10mm, the water entering the surface layer 9 flows into the drainage blind groove 82 through the water inlet pipe 91, is gathered in the drainage blind groove 81, and then is discharged out of the water storage well 4 through the drainage blind groove 81, a clamping groove is preset in the position of the surface layer 9 corresponding to the drainage blind groove 81, the clamping groove is communicated with the drainage blind groove 81, the rainwater grate 83 is covered on the clamping groove, and the upper end surface of the rainwater grate 83 is flush with the upper end surface of the surface layer 9.
The upper end face of the surface layer 9 is flush with the upper end face of the second waterproof board 23, and the surface layer 9 is adhered with the second waterproof board 23.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The waterproof construction method of the large-area civil air defense basement is characterized by comprising the following steps,
s1: excavating a soil layer according to the underground water level elevation and the on-site enclosure structure to form a basement foundation pit structure, and tamping the soil layer on the inner side of the foundation pit;
s2: pouring a base layer (1) on the surface of the foundation pit;
s3: building and enclosing a first wall body (2) which forms a basement and inclines inwards around the base layer (1), pouring first waterproof boards (21) at internal corners formed between the base layer (1) and the first wall body (2) and between the first wall bodies (2) on two adjacent sides and the base layer (1), and bending the first waterproof boards (21) towards the internal corners along the horizontal plane;
s4: gel materials are used for forming smooth connecting surfaces at the connecting part of the first waterproof board (21) and the base layer (1) and the connecting part of the first wall body (2);
s5: paving a first waterproof coiled material (5) on the surface of the base layer (1), wherein the first waterproof coiled material (5) extends to the side wall of the first wall body (2) along the first waterproof board (21) and is fixed on the first wall body (2);
s6: a second waterproof roll is arranged at the connecting angle of the adjacent first wall (2);
s7: laying a first structural layer (6) on the first waterproof coiled material (5), wherein the thickness of the first structural layer (6) is smaller than the height of a fixed part of the first waterproof coiled material (5) and the first wall body (2);
s8: pre-burying a reinforcing mesh (61) in the first structural layer (6);
s9: a third waterproof coiled material (7) is laid on the first structural layer (6), and the third waterproof coiled material (7) extends upwards along the side wall of the first wall body (2) and is fixed at the position, above the first waterproof coiled material (5), of the first wall body (2);
s10: gel substances are filled between the positions, extending along the first wall body (2), of the first waterproof coiled material (5) and the third waterproof coiled material (7), and are vibrated, so that a cavity between the first waterproof coiled material (5) and the third waterproof coiled material (7) is reduced;
s11: laying a second structural layer (8) on the second waterproof layer (31), wherein the side surface, away from the third waterproof coiled material (7), of the second structural layer (8) is inclined downwards towards one side, the inclination angle is smaller than 15 degrees, a drainage blind ditch (81) is preset on the downward inclined side of the second structural layer (8) through a first template, and a drainage blind ditch (82) communicated with the drainage blind ditch (81) is preset on the surface of the second structural layer (8) through a second template;
s12: the drainage blind ditch is characterized in that a gravel leveling layer (24) is filled in the drainage blind ditch (82), a surface layer (9) with a horizontal surface is laid on the surface of the second structural layer (8), a water inlet pipe (91) is embedded in the position, corresponding to the drainage blind ditch (82), of the surface layer (9), one end of the water inlet pipe (91) extends into the drainage blind ditch (82), and a rainwater grate (83) is laid on the surface of the drainage blind ditch (81).
2. The waterproof construction method for the large-area civil air defense basement according to claim 1, characterized in that the step S2 is to pour the base layer (1) in multiple times, an annular third formwork is arranged along the boundary of the preset base layer (1), an annular fourth formwork is arranged between the third formworks, a first pouring is performed between the third formwork and the fourth formwork, a fourth formwork with a smaller area is arranged between the fourth formworks after the first pouring is performed, the number of the fourth formworks in the fourth formwork is set to be n according to the area of the preset base layer (1), and the pouring between the fourth formwork and the fourth formwork is performed from outside to inside in sequence from the second pouring to the nth pouring.
3. The waterproof construction method for the large-area civil air defense basement according to claim 1, wherein step S5 is preceded by: the base layer (1) is processed to make the surface smooth, and a leveling layer (24) is laid on the surface of the base layer (1).
4. The waterproof construction method for the large-area civil air defense basement according to claim 1, wherein step S4 is preceded by: connecting reinforcement (22) stretching out the first wall body (2) outside are pre-buried on first wall body (2), connecting reinforcement (22) are located the one end in first wall body (2) outside and pour formation second waterproof board (23), and second waterproof board (23) are located third waterproof coiled material (7) and first wall body (2) fixed part top and third waterproof coiled material (7) bond terminal surface under second waterproof board (23) along the side that first wall body (2) set up.
5. The waterproof construction method for the large-area civil air defense basement according to claim 1, wherein the step S3 includes: the second wall body (3) is built on the outer side of the first wall body (2), a gap is reserved between the first wall body (2) and the second wall body (3), asphalt hemp threads are filled between the first wall body (2) and the second wall body (3) to form a waterproof layer (31), and backfill soil is filled between the first wall body (2) and the side wall of the foundation pit.
6. The waterproof construction method for the large-area civil air defense basement according to claim 1, wherein the step S2 further includes: asphalt factice is coated on the surfaces of connecting joints among the base layers (1) poured in multiple times, so that the surfaces of the base layers (1) are smooth.
7. The waterproof construction method for the large-area civil air defense basement according to claim 2, characterized in that the fourth formwork is provided with a circular hole, and a reinforcing steel bar (11) buried in the base layer (1) poured in two adjacent times penetrates through the circular hole.
8. The waterproof construction method for the large-area civil air defense basement according to claim 5, characterized in that a water storage well (4) with a horizontal position lower than the drainage blind ditch (81) is excavated on the outer side of the second wall body (3), a communicating pipe is buried between the water storage well (4) and the drainage blind ditch (81), and a water suction pump (41) for pumping out the accumulated water in the water storage well (4) is pre-installed in the water storage well (4).
9. The waterproof construction method for the large-area civil air defense basement according to claim 5, wherein the step S3 further comprises: the construction method comprises the steps of prefabricating a porous plate (32) with a plurality of mutually communicated through holes, enabling the through holes to be communicated with a water storage well (4), arranging a fifth template on the outer side of a second wall body (3), bonding the porous plate (32) along vertical parallel to the outer side wall of the second wall body (3), pouring gel materials between the porous plate (32) and the fifth template, dismantling the fifth template after the gel materials are solidified, covering the side face, far away from the second wall body (3), of the porous plate (32) with a sixth template, then filling backfill soil between the second wall body (3) and the side wall of a foundation pit, tamping the backfill soil, and then dismantling the sixth template.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010780388.7A CN111894124B (en) | 2020-08-06 | 2020-08-06 | Waterproof construction method for large-area civil air defense basement |
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| CN202010780388.7A CN111894124B (en) | 2020-08-06 | 2020-08-06 | Waterproof construction method for large-area civil air defense basement |
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| CN113202147A (en) * | 2021-04-19 | 2021-08-03 | 中交二公局第三工程有限公司 | Waterproof construction method for large-area civil air defense basement |
| CN113513042A (en) * | 2021-04-20 | 2021-10-19 | 北京市中建建友防水施工有限公司 | Underground waterproof engineering construction method |
| CN114809271A (en) * | 2022-04-18 | 2022-07-29 | 浙江博苑建设有限公司 | Basement waterproof foundation pit structure and construction method thereof |
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| CN114809271B (en) * | 2022-04-18 | 2024-02-02 | 浙江博苑建设有限公司 | Basement waterproof foundation pit structure and construction method thereof |
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