CN106988440B - Waterproof structure for main body and auxiliary interface of subway station and construction method of waterproof structure - Google Patents
Waterproof structure for main body and auxiliary interface of subway station and construction method of waterproof structure Download PDFInfo
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- CN106988440B CN106988440B CN201710056552.8A CN201710056552A CN106988440B CN 106988440 B CN106988440 B CN 106988440B CN 201710056552 A CN201710056552 A CN 201710056552A CN 106988440 B CN106988440 B CN 106988440B
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- 238000010276 construction Methods 0.000 title claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 230000002265 prevention Effects 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 135
- 239000010959 steel Substances 0.000 claims description 135
- 239000010410 layer Substances 0.000 claims description 93
- 238000003825 pressing Methods 0.000 claims description 45
- 239000000463 material Substances 0.000 claims description 41
- 238000004078 waterproofing Methods 0.000 claims description 29
- 239000002023 wood Substances 0.000 claims description 24
- 229920001971 elastomer Polymers 0.000 claims description 21
- 238000002955 isolation Methods 0.000 claims description 20
- 239000012528 membrane Substances 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 16
- 238000000576 coating method Methods 0.000 claims description 16
- 239000003292 glue Substances 0.000 claims description 14
- 239000004745 nonwoven fabric Substances 0.000 claims description 14
- 239000000565 sealant Substances 0.000 claims description 14
- 239000011490 mineral wool Substances 0.000 claims description 13
- 239000011241 protective layer Substances 0.000 claims description 11
- 239000004575 stone Substances 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 2
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
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- 229920006264 polyurethane film Polymers 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 230000008961 swelling Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000011527 polyurethane coating Substances 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
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- 230000015572 biosynthetic process Effects 0.000 description 1
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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
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6806—Waterstops
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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
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B2001/6818—Joints with swellable parts
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Abstract
The invention provides a waterproof structure for a main body and an auxiliary interface of a subway station, which comprises the following components: subway station main part includes with affiliated interface: a first joint of the station main structure and the auxiliary structure bottom plate, a second joint of the station main structure and the auxiliary structure side wall, and a third joint of the station main structure and the auxiliary structure top plate; a first waterproof structure is arranged at the first joint; a second waterproof structure is arranged at the second joint; a third water prevention structure is arranged at the third junction; the invention also provides a construction method of the waterproof structure used at the main body and auxiliary interface of the subway station. Through the structure, the waterproof structure is used for the waterproof structure at the main body and the auxiliary interface of the subway, the defect of single waterproof performance of the existing structure is overcome, the construction quality is controllable, and the waterproof performance at the interface is improved.
Description
Technical Field
The invention relates to the technical field of rail transit engineering construction, in particular to a waterproof structure and a construction method for a main body and auxiliary interface of a subway station.
Background
With the acceleration of urbanization pace, urban population, regional planning and urban ecological environment face huge pressure, the development of a large-traffic fast public transportation system taking underground railways as a backbone is an important way to solve urban congestion, and the rail transit construction of China enters the golden period of fast development at present.
Most subway stations adopt open cut method construction, and in the actual work progress, often after the major structure is accomplished in the construction, construct the additional structure again, new and old structure department formation construction joint is located with the additional kneck. The construction joint is a weak waterproof link of the structure, and is generally provided with a buried water stop belt, but because the main structure and the auxiliary structure of the underground station are tightly attached to the main enclosure structure, the buried water stop belt cannot be buried in the main body and the auxiliary structure in advance, the main structure and the auxiliary structure are reinforced and waterproof by adopting a water swelling water stop glue and a grouting pipe capable of full-section grouting, and the water swelling water stop glue and the grouting pipe are wound into a closed ring, and meanwhile, waterproof coiled materials are laid outside the interface to fully wrap the waterproof pipe.
But meet water inflation stagnant water and glue and be non-design waterproof material, extrude thickness inhomogeneous, the base face clearance unclean, meet water and expand scheduling problem in advance and all influence seam water-proof effects in the site operation. Simultaneously because station main part is more of a specified duration with the access & exit construction interval, and the process that involves during, the waterproof layer at interface position gets rid of the racking, gets rid of the racking protection, connects the racking quality, pre-buried slip casting pipe is extremely difficult to guarantee, and the waterproof layer reservation part is very big with the damaged possibility that loses efficacy of slip casting pipe, influences the entrance waterproof quality.
According to the statistics of the prior experience, 20-60% of the interfaces between the main body and the auxiliary body of the station in the prior method have water leakage of different degrees, the length of the leakage is mostly 1-5m along the joint direction, the width of the leakage is mostly 0.1-0.3mm, and the leakage of the vertical construction joint is obviously more than that of the horizontal construction joint. After construction is finished, even in the operation period, huge cost is needed for water prevention and leakage stoppage, and the duration of the effect after repair is short.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a waterproof structure for a main body and an auxiliary interface of a subway station, which has good waterproof quality.
Another object of the present invention is to provide a construction method for a waterproof structure at an interface of a main body and an attachment of a subway station.
In order to achieve the purpose, the invention adopts the following technical scheme:
a waterproof structure used at the main body and the auxiliary interface of a subway station,
subway station main part includes with affiliated interface: a first joint of the station main body structure and the auxiliary structure bottom plate, a second joint of the station main body structure and the auxiliary structure side wall and a third joint of the station main body structure and the auxiliary structure top plate;
a first waterproof structure is arranged at the first joint; the first waterproof structure comprises a first waterproof layer arranged between the main body enclosure structure and the auxiliary structure bottom plate and a water stop belt arranged at a joint of the main body structure and the auxiliary structure bottom plate;
a second waterproof structure is arranged at the second joint; the second waterproof structure comprises a second waterproof layer arranged between the main body enclosure structure and the side wall of the auxiliary structure and a water stop arranged at a joint of the main body structure and the side wall of the auxiliary structure;
a third water prevention structure is arranged at the third junction; the third water proofing structure comprises a third water proofing layer arranged between the main body enclosure structure and the auxiliary structure top plate and a water stop arranged at a joint of the main body structure and the auxiliary structure top plate.
Preferably, the first waterproof layer includes:
the concrete cushion layer is arranged on the main body enclosure structure;
the first reserved lapped waterproof roll is arranged on the concrete cushion layer; one end of the first reserved lapped waterproof roll close to the main structure of the station is provided with a sealant;
and the thick and thin stone concrete protective layer is arranged on the first reserved lap joint waterproof roll.
Preferably, the second waterproof layer includes:
the second reserved lapped waterproof coiled material is arranged between the main body enclosure structure and the side wall of the auxiliary structure; and two ends of the second reserved lapped waterproof roll are respectively provided with a sealant.
Preferably, the third water-proofing layer includes:
a third reserved lapped waterproof roll, which is arranged between the auxiliary structure top plate and the main body enclosure structure; a sealant is arranged at one end, close to the station main body structure, of the third reserved lapped waterproof coiled material;
the non-woven fabric isolation layer is arranged on the third reserved lapped waterproof roll;
the coating waterproof layer is arranged on the non-woven fabric isolating layer;
and the fine stone concrete protective layer is arranged on the coating waterproof layer.
Preferably, the two sides of the grouting guide pipe arranged in the auxiliary structure are respectively provided with water-swelling water stop glue, and the two sides are distributed along the direction from the main structure to the main enclosure structure.
Preferably, a groove which spans the station main body structure and the auxiliary structure is arranged at a joint of the station main body structure and the auxiliary structure; a waterproof component is arranged in the groove; the waterproof assembly comprises a water stop, and two ends of the water stop are detachably fixed to the station main body structure and the auxiliary structure respectively; rock wool is filled in the vacant positions of the grooves, and a fireproof plate is arranged at the notch of each groove; the waterproof assembly comprises a first angle steel and a second angle steel, wherein the first angle steel and the second angle steel are arranged on two sides of the bottom of the groove respectively, the first angle steel is arranged on the station main body structure, the second angle steel is arranged on the auxiliary structure, and two ends of the water stop are arranged on the first angle steel and the second angle steel of the same waterproof assembly respectively.
Preferably, the main structure of the station is provided with a first anchor bar for fixing the first angle steel, and the auxiliary structure is provided with a second anchor bar for fixing the second angle steel.
Preferably, water-swelling rubber strips are arranged in the main body structure and the auxiliary structures and are tightly attached to the angle steel and close to the seam; the extending direction of the water-swelling rubber strip is the same as the extending direction of the seam.
Preferably, the first angle steel and the second angle steel are both provided with a threaded part and a fixing nut screwed on the threaded part; a pressing plate is sleeved on the threaded part and positioned between the fixing nut and the angle steel; and pressing strips are arranged between the pressing plates and the angle steels, and two ends of the water stop are respectively pressed between the pressing strips and the angle steels.
A construction method for a waterproof structure at a main body and an auxiliary interface of a subway station comprises the following steps:
s1, after a main body enclosure structure is constructed, constructing a station main body structure located on the inner side of the main body enclosure structure to a position where the station main body structure is connected with an auxiliary structure, and reserving a first half slot position, a second half slot position and a third half slot position on the outer surface of the connecting position of the station main body structure with an auxiliary structure top plate, an auxiliary structure side wall and an auxiliary structure bottom plate;
s2, after constructing an auxiliary enclosure structure, excavating an auxiliary structure foundation pit, after excavating to the bottom of an auxiliary structure foundation pit, removing a local main enclosure structure beside the bottom of the station main structure, arranging a wood board close to the original position of the removed local main enclosure structure, arranging a fourth reserved lap joint waterproof coiled material on the side surface of the wood board facing the station main body, and arranging a steel plate serving as an isolation layer on the surface of the station main structure facing the fourth reserved lap joint waterproof coiled material;
s3, applying a first waterproof layer on the main body enclosure structure beside the bottom of the station main body structure;
s4, constructing an auxiliary structure bottom plate on the first waterproof layer, and reserving a fourth half slot position at the joint of the auxiliary structure bottom plate and the station main body structure; the first half slot position and the fourth half slot position form a first waterproof groove;
s5, fixedly arranging a water stop belt corresponding to a joint of the auxiliary structure bottom plate and the station main body structure in the first waterproof groove; filling the first waterproof groove with rock wool and plugging the first waterproof groove with a fireproof plate;
s6, removing a local main body enclosure structure beside a side wall of the main structure of the station, arranging a wood board close to the original position of the removed local main body enclosure structure, arranging a fifth reserved lapped waterproof coiled material on the side surface of the wood board facing the main body of the station, and arranging a steel plate serving as an isolation layer on the surface of the main structure of the station facing the fifth reserved lapped waterproof coiled material;
s7, constructing a second waterproof layer in the main body enclosure structure beside the side wall of the station main body structure;
s8, constructing an auxiliary structure side wall in the second waterproof layer, and reserving a fifth half slot position at the joint of the auxiliary structure side wall and the station main body structure; the second half groove and the fifth half groove form a second waterproof groove;
s9, fixedly arranging a water stop belt corresponding to a joint of the side wall of the auxiliary structure and the main structure of the station in the second waterproof groove; filling the second waterproof groove with rock wool and plugging the second waterproof groove with a fireproof plate;
s10, removing a local main body enclosure structure beside a top plate of a main structure of the station, arranging a wood plate close to the original position of the removed local main body enclosure structure, arranging a sixth reserved lapped waterproof coiled material on the side surface of the wood plate facing a main body of the station, and arranging a steel plate serving as an isolation layer on the surface of the main structure of the station facing the sixth reserved lapped waterproof coiled material;
s11, constructing an auxiliary structure top plate, and reserving a sixth half slot position at the joint of the auxiliary structure top plate and the station main body structure; the third half groove and the sixth half groove form a third water prevention groove;
s12, constructing a third waterproof layer between the auxiliary structure top plate and the main body enclosure structure;
s13, fixedly arranging a water stop belt corresponding to a joint of the side wall of the auxiliary structure and the main structure of the station in the third waterproof groove; filling the third water-proofing groove with rock wool and plugging the third water-proofing groove with a fireproof plate;
s14, removing the wood board and the steel board.
Preferably, step S3 comprises the steps of:
s31, constructing a concrete cushion layer on the main body enclosure structure beside the bottom of the station main body structure;
s32, constructing a bottom plate reserved waterproof coiled material on the concrete cushion layer, and performing throwing and joint construction on the bottom plate reserved waterproof coiled material and the fourth reserved joint waterproof coiled material through a sealant;
and S33, constructing an auxiliary bottom plate waterproof layer on the reserved waterproof coiled material of the bottom plate.
Preferably, step S7 is specifically: execute within the main part envelope of station major structure side wall and do the side wall and reserve waterproofing membrane, waterproofing membrane is reserved to the side wall through sealed glue with the fifth is reserved overlap joint waterproofing membrane and is got rid of the racking, connects the racking construction.
Preferably, step S12 specifically includes: throwing the sixth reserved lapped waterproof roll to the position above the top plate of the additional structure, and then constructing a waterproof layer above the sixth reserved lapped waterproof roll above the top plate of the additional structure; and applying a non-woven fabric isolation layer on the sixth reserved lapped waterproof roll, applying a coating waterproof layer on the non-woven fabric isolation layer, and applying a fine aggregate concrete protective layer on the coating waterproof layer.
Preferably, the exposed surface of the partial body envelope after removal is mortared.
Preferably, in step S2, the surface of the station main structure exposed after the local main body enclosure structure is removed is washed with water to wash floating slurry and impurities on the surface of the joint, and then is painted with a high-quality cement-based capillary crystalline waterproof coating.
Preferably, before the waterproof roll is constructed, the surface of the concrete is cleaned and a polyurethane coating waterproof layer is brushed on the surface of the concrete.
Preferably, the corner occurred during the construction process is set as a male-female corner, and then the waterproof roll is laid thereon.
Preferably, the specific steps of arranging the water stop include:
a. in the step S1, a first anchor bar and a first angle steel for fixing the angle steel are pre-buried when a main structure of a station is constructed; in the step S4, the step S8 and the step S11, a second anchor bar and a second angle steel for fixing the angle steel are pre-buried when the auxiliary structure is constructed; a first angle steel and a second angle steel are arranged in the first waterproof groove, the second waterproof groove and the third waterproof groove;
b. and the two ends of the water stop are detachably fixed with the first angle steel and the second angle steel respectively.
Preferably, step a specifically comprises: in the step S1, when a main structure of a station is constructed, a first anchor bar for fixing angle steel and the first angle steel are pre-embedded, a first screw penetrating through the first angle steel needs to be pre-embedded, a first nut is screwed into the first screw, a first water-swelling rubber strip is pre-embedded beside the screw, and the water-swelling rubber strip is tightly attached to the first angle steel; in the steps S4, S8 and S11, a second anchor bar for fixing the angle steel and the second angle steel are pre-buried when the auxiliary structure is constructed, a second screw penetrating through the second angle steel is also pre-buried, a second nut is screwed into the second screw, a second water-swelling rubber strip is pre-buried beside the second screw, and the second water-swelling rubber strip is tightly attached to the second angle steel; and a first angle steel and a second angle steel are arranged on the first waterproof groove, the second waterproof groove and the third waterproof groove.
The step b is specifically as follows: a pressing plate is arranged on the screw, and then a first pressing strip and a second pressing strip are arranged between the pressing plate and the angle steel; the first pressing strips are located between the second pressing strips, then the two ends of the water stop are tightly pressed between the first pressing strips and the angle steel, and then the nuts are screwed.
Compared with the prior art, the invention has the following beneficial effects:
through the structure, the waterproof structure is used for the waterproof structure at the main body and the auxiliary interface of the subway, the defect of single waterproof performance of the existing structure is overcome, the construction quality is controllable, and the waterproof performance at the interface is improved; the detachable water stop has good waterproof effect and stronger deformability, is suitable for the difference deformation between the main body and the auxiliary body, can be used for detection in the daily use process, and can be repaired and replaced after leakage occurs; waterproofing membrane is protected through pre-buried plank and steel sheet during major structure construction, and waterproofing membrane is not damaged when guaranteeing the attached construction in later stage, improves outsourcing waterproofing quality.
Drawings
FIG. 1 is a schematic view of a waterproof structure for joints between a main body and an auxiliary of a subway station according to the present invention;
FIG. 2 is an enlarged view of a portion I of FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of a portion II of FIG. 1 according to the present invention;
FIG. 4 is a waterproof structure diagram of the seam between the side wall of the main structure of the station and the side wall of the auxiliary structure of the invention;
FIG. 5 is an enlarged view of a portion III of FIG. 3 according to the present invention;
FIG. 6 is a schematic view of the protection of the waterproof roll material reserved in the present invention;
in the figure:
1-main structure of station; 2, a main body enclosure structure; 3-attachment structure top plate; 4-attachment structure base plate; 5-water swelling and water stopping glue; 6-grouting guide pipe; 7, water stop; 8-rock wool; 10-waterproof roll material; 11-a non-woven fabric isolation layer; 12-fine stone concrete protective layer; 13-fire-proof plate; 14-coating waterproof layer; 15, sealing glue; 16-an auxiliary enclosure; 17-auxiliary structure side wall; 18-angle steel; 19-anchor bars; 20-fixing the nut; 21-screw rod; 22-water-swelling rubber strip; 23, pressing a strip; 24-pressing plate; 25-a gasket; 26-wood board; 27-steel plate; 28-concrete cushion.
The invention will now be further described with reference to the accompanying drawings and specific embodiments.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 6, the present invention relates to a waterproof structure for a main body and an auxiliary interface of a subway station,
subway station main part includes with affiliated interface: a first joint of the station main structure 1 and the auxiliary structure bottom plate 4, a second joint of the station main structure 1 and the auxiliary structure side wall 17, and a third joint of the station main structure and the auxiliary structure top plate 3;
a first waterproof structure is arranged at the first joint; the first waterproof structure comprises a first waterproof layer arranged between the main body enclosure structure 2 and the auxiliary structure bottom plate 4 and a water stop belt 7 arranged at a joint of the main body structure and the auxiliary structure bottom plate 4.
The first waterproof layer comprises a concrete cushion layer 28, a first reserved lapped waterproof roll and a thick and fine stone concrete protective layer 12; a concrete pad 28 is arranged on the main body enclosure 2; the first reserved lapped waterproof roll is arranged on the concrete cushion 28, and one end, close to the station main body structure 1, of the first reserved lapped waterproof roll is provided with a sealant 15; the thick and thin stone concrete protection layer 12 is arranged on the first reserved lapped waterproof roll.
A second waterproof structure is arranged at the second joint; the second waterproof structure comprises a second waterproof layer arranged between the main body enclosure structure and the side wall 17 of the auxiliary structure and a water stop 7 arranged at a joint of the main body structure and the side wall 17 of the auxiliary structure.
The second waterproof layer comprises a second reserved lapped waterproof roll. The second reserved lapped waterproof coiled material is arranged between the main body enclosure structure and the side wall of the auxiliary structure; and two ends of the second reserved lapped waterproof roll are respectively provided with a sealant 15.
A third water prevention structure is arranged at the third junction; the third water proofing structure is including set up in main part envelope 2 with third water proofing layer between the additional structure roof 3 and locate the main part structure with waterstop 7 of the seam of additional structure roof 3.
The third waterproof layer comprises a third reserved lapped waterproof roll, a non-woven fabric isolation layer 11, a coating waterproof layer 14 and a fine aggregate concrete protective layer 12.
The third reserved lapped waterproof coiled material is arranged between the auxiliary structure top plate 3 and the main body enclosure structure 2; a sealant 15 is arranged at one end, close to the station main body structure 1, of the third reserved lap joint waterproof roll; the non-woven fabric isolation layer 11 is arranged on the third reserved lapped waterproof roll; the coating waterproof layer 14 is arranged on the non-woven fabric isolating layer 11; the fine stone concrete protective layer 12 is disposed on the paint waterproof layer 14.
The sealant 15 is arranged on the edge of the reserved lapped waterproof roll for sealing.
And water-swelling waterproof glue 5 is respectively arranged on two sides of a grouting guide pipe 6 in the auxiliary structure, and the two sides are distributed along the direction from the main structure to the main enclosure structure 2.
The outer surface of the joint of the main structure 1 and the auxiliary structure of the station is provided with a water stop belt 7 with a corresponding joint. Specifically, the method comprises the following steps:
a groove striding over the main structure and the auxiliary structure of the station is arranged at the joint of the main structure and the auxiliary structure of the station; a waterproof component is arranged in the groove; the waterproof assembly comprises a water stop belt 7, and two ends of the water stop belt 7 are respectively fixed on the main structure and the auxiliary structure of the station; rock wool 8 is filled in the vacant positions of the grooves, and a fireproof plate 13 is arranged at the notch of each groove. The water stop 7 is an OMEGA water stop. The OMEGA waterstop has good waterproof effect.
The waterproof assembly comprises first angle steel 18 and second angle steel 18 which are arranged on two sides of the bottom of the groove respectively, the first angle steel is arranged on the station main body structure, the second angle steel is arranged on the auxiliary structure, the station main body structure is provided with a first anchor bar 19 used for fixing the first angle steel, and the auxiliary structure is provided with a second anchor bar 19 used for fixing the second angle steel. The first anchor bar and the second anchor bar are pre-buried 12@250 anchor bars, and the first angle steel and the second angle steel are 180x150x10 angle steel.
7 detachably of waterstop install in the recess, concrete mode is: two ends of the water stop 7 are respectively arranged on a first angle steel and a second angle steel of the same waterproof component. The first angle steel and the second angle steel are both provided with a screw thread piece and a fixing nut 20 screwed on the screw thread piece; the threaded part is sleeved with a pressing plate 24, the pressing plate 24 is located between the fixing nut and the angle steel, and a gasket 25 is arranged between the pressing plate and the fixing nut. A first pressing strip 23 and a second pressing strip 23 are arranged between the pressing plate and the angle steel, the first pressing strip is close to the central axis of the groove, the second pressing strip is close to the side wall of the groove, and two ends of the water stop belt 7 are respectively tightly pressed between the first pressing strip and the angle steel. The threaded member is a threaded rod. Preferably, the screw 21 is an M16 screw and the fixing nut is an M16 internally threaded end nut. The water stop 7 is pressed tightly by the first pressing strip, and the action force of the nut and the pressing plate acts on the first pressing strip, so that the water stop can be pressed tightly, and the pressing strip can be prevented from being damaged. The second pressing strip is used for ensuring that the pressing plates can be kept parallel when the pressing plates are pressed down, and the applied pressure is relatively even.
And one end of the threaded rod arranged on the first angle steel penetrates through the first angle steel and is fixed on the station main body, and the other end of the threaded rod is screwed with a fixing nut. And one end of the threaded rod arranged on the second angle steel penetrates through the second angle steel and is fixed on the auxiliary structure, and the other end of the threaded rod is screwed with a fixing nut.
The main structure and the auxiliary structure of the station are both internally provided with water-swellable rubber strips 22, and the water-swellable rubber strips 22 are tightly attached to the angle steel and are close to the seams; the water-swellable rubber strip 22 extends in the same direction as the seam.
The invention also discloses a construction method of the waterproof structure used at the main body and auxiliary interface of the subway station, which comprises the following steps:
s1, after a main body enclosure structure 2 is constructed, constructing a station main body structure 1 located on the inner side of the main body enclosure structure 2 to a position where the station main body structure 1 is connected with an auxiliary structure, and reserving a first half slot position, a second half slot position and a third half slot position on the outer surface of the connecting position of the station main body structure 1 and an auxiliary structure top plate, an auxiliary structure side wall 17 and an auxiliary structure bottom plate 4;
s2, after constructing the auxiliary enclosure structure 16, excavating an auxiliary structure foundation pit, after excavating to the bottom of an auxiliary structure foundation pit, removing the local main enclosure structure 2 beside the bottom of the station main structure, arranging a wood board 26 close to the original position of the removed local main enclosure structure, paving a fourth reserved lapped waterproof coiled material on the side surface of the wood board facing the station main body, and paving a steel plate 27 serving as an isolation layer on the surface of the station main structure facing the fourth reserved lapped waterproof coiled material; and removing the exposed surface of the main structure of the station after the local main body building envelope, washing the surface laitance and impurities of the joint by water, and then coating high-quality cement-based permeable crystallization type waterproof coating.
S3, applying a first waterproof layer on the main body enclosure structure 2 beside the bottom of the station main body structure 1, wherein the concrete steps comprise:
s31, constructing a concrete cushion 28 on the main body enclosure structure 2 beside the bottom of the station main body structure 1;
s32, constructing a bottom plate reserved waterproof coiled material on the concrete cushion layer 28, and performing throwing and joint construction on the bottom plate reserved waterproof coiled material and the fourth reserved joint waterproof coiled material through the sealant 15;
and S33, constructing an auxiliary bottom plate waterproof layer on the reserved waterproof coiled material of the bottom plate.
S4, constructing an auxiliary structure bottom plate 4 on the first waterproof layer, and reserving a fourth half slot position at the joint of the auxiliary structure bottom plate 4 and the station main body structure; the first half slot position and the fourth half slot position form a first waterproof groove; the method comprises the following specific steps:
binding a first steel bar frame of the auxiliary structure bottom plate 4 at a preset position of the auxiliary structure bottom plate 4, arranging a first grouting guide pipe 6 on the first steel bar frame, and respectively arranging first water-swelling waterproof glue 5 on two sides (two sides distributed from the main structure to the main enclosure structure 2) of the first grouting guide pipe; a fourth half slot position is reserved at the joint of the preset positions of the main structure of the station and the bottom plate 4 of the auxiliary structure by the first steel bar frame; pouring concrete to the first steel bar frame through the first grouting guide pipe 6; the first half groove and the fourth half groove form a first waterproof groove.
S5, fixedly arranging a water stop belt 7 corresponding to a joint of the auxiliary structure bottom plate 4 and the station main body structure in the first waterproof groove; filling the first waterproof groove with rock wool 8 and plugging the first waterproof groove with a fireproof plate 13;
s6, removing the local main body building envelope 2 beside the side wall of the main structure of the station, arranging a wood board 26 close to the original position of the removed local main body building envelope 2, paving a fifth reserved lap joint waterproof coiled material on the side surface of the wood board facing the main body of the station, and paving a steel plate 27 serving as an isolation layer on the surface of the main structure of the station facing the fifth reserved lap joint waterproof coiled material;
s7, applying a second waterproof layer in the main body enclosure structure 2 beside the side wall of the main structure of the station, wherein the specific steps comprise:
execute within the main part envelope of station major structure side wall and do the side wall and reserve waterproofing membrane, waterproofing membrane is reserved to the side wall through sealed glue 15 with the fifth is reserved overlap joint waterproofing membrane and is got rid of the racking, connects the racking construction.
S8, constructing an auxiliary structure side wall 17 in the second waterproof layer, and reserving a fifth half slot position at the joint of the auxiliary structure side wall 17 and the station main body structure; the second half slot position and the fifth half slot position form a second waterproof groove; the method comprises the following specific steps:
binding a second steel bar frame of the side wall of the auxiliary structure at a preset position of the side wall 17 of the auxiliary structure, arranging a second grouting guide pipe 6 on the second steel bar frame, and respectively arranging second water-swelling water-stopping glue 5 at two sides (two sides distributed from the main structure to the main enclosure structure) of the second grouting guide pipe 6; a fifth semi-slot position is reserved at the joint of the preset positions of the main structure of the station and the side wall of the auxiliary structure of the second steel bar frame; pouring concrete to the second steel bar frame through the second grouting guide pipe 6; the second half slot position and the fifth half slot position form a second waterproof groove.
S9, fixedly arranging a water stop belt 7 corresponding to a joint of the side wall of the auxiliary structure and the main structure of the station in the second waterproof groove; filling the second waterproof groove with rock wool 8 and plugging the second waterproof groove with a fireproof plate 13;
s10, removing a local main body enclosure structure 2 beside a top plate of a main structure of the station, arranging a wood plate 26 close to the original position of the removed local main body enclosure structure, paving a sixth reserved lapped waterproof coiled material on the side surface of the wood plate 26 facing a main body of the station, and paving a steel plate serving as an isolation layer on the surface of the main structure of the station facing the sixth reserved lapped waterproof coiled material;
s11, constructing an auxiliary structure top plate 3, and reserving a sixth half slot position at the joint of the auxiliary structure top plate 3 and the station main body structure; the third half groove and the sixth half groove form a third water prevention groove; the method comprises the following specific steps:
binding a third steel bar frame of the auxiliary structure top plate 3 at a preset position of the auxiliary structure top plate 3, arranging a third grouting guide pipe 6 on the third steel bar frame, and respectively arranging third water-swelling waterproof glue 5 on two sides (two sides distributed from the main structure to the main enclosure structure 2) of the third grouting guide pipe 6; a sixth half slot position is reserved at the joint of the preset positions of the main structure of the station and the top plate 3 of the auxiliary structure of the third steel bar frame; pouring concrete to the third steel bar frame through the third grouting guide pipe 6; a third water prevention groove is formed in the third half groove and the sixth half groove;
s12, constructing a third waterproof layer between the auxiliary structure top plate 3 and the main body enclosure structure 2; specifically, after the concrete on the first steel reinforcement frame reaches a preset strength, the sixth reserved lapped waterproof roll is thrown to the upper side of the attached structure top plate 3 and is sealed by using a sealant 15; and then, a non-woven fabric isolation layer 11 is arranged above the sixth reserved lap joint waterproof roll above the top plate of the auxiliary structure, a coating waterproof layer 14 is arranged on the non-woven fabric isolation layer 11, and a fine aggregate concrete protective layer 12 is arranged on the coating waterproof layer 14.
S13, fixedly arranging a water stop belt 7 corresponding to a joint of the side wall of the auxiliary structure and the main structure of the station in the third waterproof groove; filling the third water-proofing groove with rock wool 8 and plugging the third water-proofing groove with a fireproof plate 13;
s14, removing the wood board 26 and the steel plate.
In the above steps, after removing the partial main body envelope 2, the exposed surface, including the main body envelope and the main body envelope, is leveled with mortar.
In the steps, before the waterproof coiled material is constructed, the surface of the concrete is cleaned, and a layer of polyurethane coating waterproof layer is brushed on the surface of the concrete. Waterproofing membrane 10 includes that the overlap joint waterproofing membrane is reserved to the fourth, the overlap joint waterproofing membrane is reserved to the fifth, the overlap joint waterproofing membrane is reserved to the sixth, waterproofing membrane is reserved to the bottom plate and waterproofing membrane is reserved to the side wall.
In the above steps, the corners (including the corners of the main body enclosure structure with the part removed) which appear in the construction process are set as the internal and external corners, and then the waterproof roll is laid on the internal and external corners.
In the above step, the waterstop 7 is an OMEGA waterstop. In the steps, the wood plate and the steel plate are arranged to be used as temporary protection structures.
The concrete steps of setting up the waterstop include:
a. in the step S1, when constructing the main structure of the station, a first anchor bar for fixing the angle steel, the first angle steel, and an M16 screw penetrating the first angle steel are embedded, the M16 screw is screwed into an M16 internal thread end-capped nut 20, a first water-swelling rubber strip 22 is embedded beside the M16 screw, and the water-swelling rubber strip 22 is tightly attached to the first angle steel; in the steps S4, S8 and S11, a second anchor bar and a second angle steel for fixing the angle steel are pre-embedded during construction of the auxiliary structure, an M16 screw penetrating through the second angle steel is also pre-embedded, an M16 internal thread end-sealing nut 20 is screwed on the M16 screw, a second water-swelling rubber strip 22 is pre-embedded beside the M16 screw, and the second water-swelling rubber strip 22 is tightly attached to the second angle steel; and a first angle steel and a second angle steel are arranged on the first waterproof groove, the second waterproof groove and the third waterproof groove.
b. A press plate 24 is arranged on the M16 screw, and then a first pressing strip and a second pressing strip are arranged between the press plate 24 and an angle steel (a first angle steel or a second angle steel); the first pressing strips are located between the second pressing strips, then the two ends of the water stop band are tightly pressed between the first pressing strips and the angle steel, and then the M16 internal thread end-sealing nut 20 is screwed.
The invention relates to a waterproof structure and a construction method for a main body and an accessory interface of a subway station, which make up the defect of single waterproof of the existing structure by using an OMEGA water stop, have good waterproof effect and easily controlled construction quality, are suitable for the difference deformation between the main body and the main body, can detect in the daily use process and can be repaired and replaced after leakage occurs; meanwhile, when the main structure is constructed, the waterproof coiled material is protected through the embedded wood boards and the steel plates, and the waterproof coiled material is not damaged when auxiliary construction in the later period is guaranteed. The invention has reliable construction quality, improves the waterproof performance of the interface and is easy to deal with the later-stage leakage problem.
The present invention is not limited to the above-described embodiments, and various changes and modifications of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (14)
1. A waterproof structure used at the joint of a main body and an auxiliary connector of a subway station is characterized in that,
subway station main part includes main part envelope, subway station main part includes with affiliated kneck: a first joint of the station main body structure and the auxiliary structure bottom plate, a second joint of the station main body structure and the auxiliary structure side wall and a third joint of the station main body structure and the auxiliary structure top plate;
a first waterproof structure is arranged at the first joint; the first waterproof structure comprises a first waterproof layer arranged between the main body enclosure structure and the auxiliary structure bottom plate and a water stop belt arranged at a joint of the main body structure and the auxiliary structure bottom plate;
a second waterproof structure is arranged at the second joint; the second waterproof structure comprises a second waterproof layer arranged between the main body enclosure structure and the side wall of the auxiliary structure and a water stop belt arranged at a joint of the main body structure and the side wall of the auxiliary structure;
a third water prevention structure is arranged at the third junction; the third water prevention structure comprises a third water prevention layer arranged between the main body enclosure structure and the auxiliary structure top plate and a water stop belt arranged at a joint of the main body structure and the auxiliary structure top plate;
the first waterproof layer includes:
the concrete cushion layer is arranged on the main body enclosure structure;
the first reserved lapped waterproof roll is arranged on the concrete cushion layer; one end of the first reserved lapped waterproof roll close to the main structure of the station is provided with a sealant;
the thick and thin stone concrete protective layer is arranged on the first reserved lapped waterproof roll;
the second waterproof layer includes:
the second reserved lapped waterproof roll is arranged between the main body enclosure structure and the side wall of the auxiliary structure; two ends of the second reserved lapped waterproof roll are respectively provided with a sealant;
the third prevention water layer includes:
a third reserved lapped waterproof roll, which is arranged between the auxiliary structure top plate and the main body enclosure structure; a sealant is arranged at one end, close to the main structure of the station, of the third reserved lapped waterproof roll;
the non-woven fabric isolation layer is arranged on the third reserved lapped waterproof roll;
the coating waterproof layer is arranged on the non-woven fabric isolating layer;
the fine stone concrete protective layer is arranged on the paint waterproof layer;
two sides of a grouting guide pipe arranged in the auxiliary structure are respectively provided with a water-swelling water stop glue, and the two sides are distributed along the direction from the main structure to the main enclosure structure;
a groove which is spanned on the main station structure and the auxiliary structure is arranged at the joint of the main station structure and the auxiliary structure; a waterproof component is arranged in the groove; the waterproof assembly comprises a water stop, and two ends of the water stop are detachably fixed to the station main body structure and the auxiliary structure respectively; rock wool is filled in the vacant positions of the grooves, and a fireproof plate is arranged at the notch of each groove; the waterproof assembly comprises a first angle steel and a second angle steel, wherein the first angle steel and the second angle steel are arranged on two sides of the bottom of the groove respectively, the first angle steel is arranged on the station main body structure, the second angle steel is arranged on the auxiliary structure, and two ends of the water stop are arranged on the first angle steel and the second angle steel of the same waterproof assembly respectively.
2. The waterproof structure for the interface between the main body of the subway station and the attachment structure as claimed in claim 1, wherein said main structure of the station is provided with a first anchor bar for fixing a first angle steel, and said attachment structure is provided with a second anchor bar for fixing a second angle steel.
3. The waterproof structure for the main body and auxiliary interface of the subway station as claimed in claim 1, wherein water-swellable rubber strips are arranged in both the main body structure and the auxiliary structure, and the water-swellable rubber strips are attached to the angle steel and close to the seam; the extending direction of the water-swelling rubber strip is the same as the extending direction of the seam.
4. The waterproof structure for the main body and auxiliary interface of the subway station as claimed in claim 1, wherein said first and second angles are provided with a screw and a fixing nut screwed on said screw; a pressing plate is sleeved on the threaded part and positioned between the fixing nut and the angle steel; and pressing strips are arranged between the pressing plates and the angle steels, and two ends of the water stop are respectively pressed between the pressing strips and the angle steels.
5. A construction method of a waterproof structure used at a main body and auxiliary interface of a subway station is characterized by comprising the following steps:
s1, after a main body enclosure structure is constructed, constructing a station main body structure located on the inner side of the main body enclosure structure to a position where the station main body structure is connected with an auxiliary structure, and reserving a first half slot position, a second half slot position and a third half slot position on the outer surface of the connecting position of the station main body structure with an auxiliary structure top plate, an auxiliary structure side wall and an auxiliary structure bottom plate;
s2, after constructing an auxiliary enclosure structure, excavating an auxiliary structure foundation pit, after excavating to the bottom of an auxiliary structure foundation pit, removing a local main enclosure structure beside the bottom of the station main structure, arranging a wood board close to the original position of the removed local main enclosure structure, arranging a fourth reserved lapped waterproof coiled material on the side surface of the wood board facing the station main body, and arranging a steel plate serving as an isolation layer on the surface of the station main structure facing the fourth reserved lapped waterproof coiled material;
s3, applying a first waterproof layer on the main body enclosure structure beside the bottom of the station main body structure;
s4, constructing an auxiliary structure bottom plate on the first waterproof layer, and reserving a fourth half slot position at the joint of the auxiliary structure bottom plate and the station main body structure; the first half slot position and the fourth half slot position form a first waterproof groove;
s5, fixedly arranging a water stop belt corresponding to a joint of the auxiliary structure bottom plate and the station main body structure in the first waterproof groove; filling the first waterproof groove with rock wool and plugging the first waterproof groove with a fireproof plate;
s6, removing a local main body enclosure structure beside a side wall of the main structure of the station, arranging a wood board close to the original position of the removed local main body enclosure structure, arranging a fifth reserved lapped waterproof coiled material on the side surface of the wood board facing the main body of the station, and arranging a steel plate serving as an isolation layer on the surface of the main structure of the station facing the fifth reserved lapped waterproof coiled material;
s7, constructing a second waterproof layer in the main body enclosure structure beside the side wall of the station main body structure;
s8, constructing an auxiliary structure side wall in the second waterproof layer, and reserving a fifth half slot position at the joint of the auxiliary structure side wall and the station main body structure; the second half groove and the fifth half groove form a second waterproof groove;
s9, fixedly arranging a water stop belt corresponding to a joint of the side wall of the auxiliary structure and the main structure of the station in the second waterproof groove; filling the second waterproof groove with rock wool and plugging the second waterproof groove with a fireproof plate;
s10, removing a local main body enclosure structure beside a top plate of a main structure of the station, arranging a wood plate close to the original position of the removed local main body enclosure structure, arranging a sixth reserved lapped waterproof coiled material on the side surface of the wood plate facing a main body of the station, and arranging a steel plate serving as an isolation layer on the surface of the main structure of the station facing the sixth reserved lapped waterproof coiled material;
s11, constructing an auxiliary structure top plate, and reserving a sixth half slot position at the joint of the auxiliary structure top plate and the station main body structure; the third half groove and the sixth half groove form a third water prevention groove;
s12, constructing a third waterproof layer between the auxiliary structure top plate and the main body enclosure structure;
s13, fixedly arranging a water stop belt corresponding to a joint of the side wall of the auxiliary structure and the main structure of the station in the third waterproof groove; filling the third water-proofing groove with rock wool and plugging the third water-proofing groove with a fireproof plate;
s14, removing the wood board and the steel board.
6. The construction method for the waterproof structure at the main body and auxiliary interface of the subway station as claimed in claim 5, wherein step S3 comprises the steps of:
s31, constructing a concrete cushion layer on the main body enclosure structure beside the bottom of the station main body structure;
s32, applying a base plate reserved waterproof coiled material on the concrete cushion layer, and throwing and jointing the base plate reserved waterproof coiled material and the fourth reserved lapped waterproof coiled material through a sealant;
and S33, constructing an auxiliary bottom plate waterproof layer on the reserved waterproof coiled material of the bottom plate.
7. The construction method for the waterproof structure at the main body and auxiliary interface of the subway station as claimed in claim 5, wherein step S7 specifically is: execute within the main part envelope of station major structure side wall and do the side wall and reserve waterproofing membrane, waterproofing membrane is reserved to the side wall through sealed glue with the fifth is reserved overlap joint waterproofing membrane and is got rid of the racking, connects the racking construction.
8. The construction method for the waterproof structure at the main body and auxiliary interface of the subway station as claimed in claim 5, wherein step S12 specifically comprises: throwing the sixth reserved lapped waterproof roll onto the upper side of the auxiliary structure top plate, and then constructing a waterproof layer on the sixth reserved lapped waterproof roll above the auxiliary structure top plate; and applying a non-woven fabric isolation layer on the sixth reserved lapped waterproof roll, applying a coating waterproof layer on the non-woven fabric isolation layer, and applying a fine aggregate concrete protective layer on the coating waterproof layer.
9. The construction method for the waterproof structure at the main body and auxiliary interface of the subway station as claimed in claim 5, wherein the surface exposed outside after the partial main body enclosure is removed is screeded with mortar.
10. The construction method for the waterproof structure at the main body and auxiliary interface of the subway station as claimed in claim 5, wherein in step S2, the exposed surface of the main body structure of the station after the local main body enclosure structure is removed is washed with water to wash floating slurry and impurities on the surface of the joint, and then is coated with high-quality cement-based permeable crystalline waterproof coating.
11. The construction method for the waterproof structure at the main body and the auxiliary interface of the subway station as claimed in claim 5, wherein before the waterproof roll is constructed, the surface of the concrete is cleaned and a layer of polyurethane film waterproof layer is coated on the surface of the concrete.
12. The construction method for the waterproof structure at the main body and auxiliary interface of the subway station as claimed in claim 5, wherein corners appearing during construction are set as male and female corners, and waterproof rolls are laid thereon.
13. The construction method for the waterproof structure at the main body and auxiliary interface of the subway station as claimed in claim 5, wherein the concrete step of providing said water stop includes:
a. in the step S1, a first anchor bar and a first angle steel for fixing the angle steel are pre-buried when a main structure of a station is constructed; in the step S4, the step S8 and the step S11, a second anchor bar and a second angle steel for fixing the angle steel are pre-buried when the auxiliary structure is constructed; a first angle steel and a second angle steel are arranged in the first waterproof groove, the second waterproof groove and the third waterproof groove;
b. and the two ends of the water stop are detachably fixed with the first angle steel and the second angle steel respectively.
14. The construction method for the waterproof structure at the main body and the accessory interface of the subway station as claimed in claim 13, wherein step a specifically comprises: in the step S1, when a main structure of a station is constructed, a first anchor bar for fixing angle steel and the first angle steel are pre-embedded, a first screw penetrating through the first angle steel needs to be pre-embedded, a first nut is screwed into the first screw, a first water-swelling rubber strip is pre-embedded beside the screw, and the water-swelling rubber strip is tightly attached to the first angle steel; in the steps S4, S8 and S11, a second anchor bar and a second angle steel for fixing the angle steel are pre-embedded during construction of the auxiliary structure, a second screw penetrating through the second angle steel needs to be pre-embedded, a second nut is screwed into the second screw, a second water-swelling rubber strip is pre-embedded beside the second screw, and the second water-swelling rubber strip is tightly attached to the second angle steel; a first angle steel and a second angle steel are arranged in the first waterproof groove, the second waterproof groove and the third waterproof groove;
the step b is specifically as follows: a pressing plate is arranged on the screw, and then a first pressing strip and a second pressing strip are arranged between the pressing plate and the angle steel; the first pressing strips are located between the second pressing strips, then the two ends of the water stop are tightly pressed between the first pressing strips and the angle steel, and then the nuts are screwed.
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| CN108442415A (en) * | 2018-04-08 | 2018-08-24 | 中铁第四勘察设计院集团有限公司 | A kind of stifled row suitable for construction of underground structure combines water-tight device and method |
| CN110374138A (en) * | 2019-07-09 | 2019-10-25 | 安徽水利开发股份有限公司 | The waterproof construction and construction method of station main body and accessory channel interface |
| CN110528593B (en) * | 2019-08-05 | 2021-04-16 | 中国电建集团铁路建设有限公司 | Heat-insulation waterproof structure for joint of main body and auxiliary structure top plate of station and construction method |
| CN112942439B (en) * | 2021-03-11 | 2023-03-07 | 上海市城市建设设计研究总院（集团）有限公司 | Flexible deformation joint structure between main body attachments of subway station and construction method thereof |
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