CN111663953A - Waterproof structure for thin-wall secondary-lining deformation joint of sewage tunnel and construction method - Google Patents
Waterproof structure for thin-wall secondary-lining deformation joint of sewage tunnel and construction method Download PDFInfo
- Publication number
- CN111663953A CN111663953A CN202010550966.8A CN202010550966A CN111663953A CN 111663953 A CN111663953 A CN 111663953A CN 202010550966 A CN202010550966 A CN 202010550966A CN 111663953 A CN111663953 A CN 111663953A
- Authority
- CN
- China
- Prior art keywords
- deformation joint
- rubber
- waterproof
- stainless steel
- lining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 239000010865 sewage Substances 0.000 title claims abstract description 29
- 229920001971 elastomer Polymers 0.000 claims abstract description 46
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 239000010935 stainless steel Substances 0.000 claims abstract description 26
- 229920005549 butyl rubber Polymers 0.000 claims abstract description 24
- 238000003825 pressing Methods 0.000 claims abstract description 23
- -1 polyethylene Polymers 0.000 claims abstract description 21
- 239000004698 Polyethylene Substances 0.000 claims abstract description 20
- 239000006260 foam Substances 0.000 claims abstract description 20
- 229920000573 polyethylene Polymers 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000011433 polymer cement mortar Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000004587 polysulfide sealant Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000012945 sealing adhesive Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 7
- 230000001680 brushing effect Effects 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 4
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000004073 vulcanization Methods 0.000 claims description 3
- 239000010963 304 stainless steel Substances 0.000 claims description 2
- 229920002943 EPDM rubber Polymers 0.000 claims description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 2
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000008602 contraction Effects 0.000 abstract description 2
- 238000004062 sedimentation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/381—Setting apparatus or devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/383—Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/385—Sealing means positioned between adjacent lining members
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a waterproof structure for a thin-wall secondary lining deformation joint of a sewage tunnel, which is sequentially provided with an externally-attached rubber waterstop, a closed-cell polyethylene foam board, a modified polysulfide sealant, a first layer of butyl rubber waterproof sealing tape, an omega rubber waterstop, a second layer of butyl rubber waterproof sealing tape, a stainless steel metal pressing plate, an expansion type torque control type mechanical anchor bolt and polymer cement mortar from a primary lining to a secondary lining. Through the mutual cooperation of the materials, an effective and stable deformation joint waterproof sealing structure is formed, the integrity can be guaranteed under long-term sewage environment and external force impact, tearing and gaps caused by contraction or expansion of the deformation joint due to general external force and natural sedimentation are avoided, and the waterproof quality of the thin-wall two-lining deformation joint of the sewage tunnel is effectively improved. The construction method is simple and convenient in process, compared with the traditional buried deformation joint structure, secondary lining construction is not influenced, and the construction period can be shortened while the waterproof quality of the deformation joint is ensured.
Description
Technical Field
The invention relates to the technical field of tunnel building waterproof construction, in particular to a waterproof structure for a thin-wall secondary lining deformation joint of a sewage tunnel and a construction method.
Background
The underground tunnel is in the relatively poor section of geological conditions, receives the inhomogeneous influence of weak foundation factor of land and tectonic load, and the deformation difference of structure probably causes the structure crack, destroys, and inevitable needs in the lining in-process predetermine the movement joint so that guarantee the structure safety, and the movement joint sets up the interval and need littleer than conventional. The traditional construction method is that a 2-3 cm gap is formed between a first pouring lining section and a second pouring lining section, a middle buried steel edge rubber waterstop or a galvanized red copper waterstop is arranged between two end linings, a gap is filled by adopting a joint filling material, a rubber waterstop is arranged between a primary lining and a secondary lining, and a water receiving box is arranged at the arch top of the tunnel.
The method is used for the conventional tunnel secondary lining, but when the method is used for a secondary lining structure with smaller thickness, the conventional deformation joint waterproof treatment method has the following defects: firstly, the secondary lining is small in thickness, if a middle-buried steel-edged rubber water stop belt or a galvanized red copper water stop belt is arranged, the deformation joint is difficult to seal tightly, the problem that the top of an arch wall is difficult to pour compactly is caused, the top of the secondary lining is hollowed and forms a water permeable channel, and the waterproof effect cannot be achieved; and secondly, the deformation joint is a waterproof weak part of the tunnel, and the deformation joint of the sewage tunnel not only ensures that external water does not leak inwards, but also prevents sewage from leaking outwards. In the traditional construction method, the water stopping material is buried in the concrete structure, the secondary lining is small in thickness and limited in space, the structure belongs to a thin-wall structure, concrete cannot completely enter the position below the buried water stopping material, cavities are easily formed at deformation joints, and the structure has defects. Under the long-term action of bearing external load and sewage internal pressure, the concrete at the deformation joint is easy to crack, and the waterproof function is lost.
Disclosure of Invention
In order to overcome the technical defect of poor waterproof effect of the deformation joint of the tunnel secondary lining in the prior art, the invention provides a waterproof structure and a construction method for the thin-wall secondary lining deformation joint of the sewage tunnel, which can meet the waterproof requirement of the deformation joint of the secondary lining, particularly the seepage-proofing requirement under the sewage environment, can enable the deformation joint and the sewage tunnel to achieve the integrated effect through the waterproof structure, and solves the technical problems.
The invention realizes the aim through the following technical scheme, and the novel waterproof structure for the thin-wall two-lining deformation joint of the sewage tunnel comprises an externally-attached rubber water stop, a closed-pore polyethylene foam plate, a modified polysulfide sealant, a butyl rubber waterproof sealing adhesive tape, an omega rubber water stop, an expansion type torque control type mechanical anchor bolt, a stainless steel metal pressing plate and polymer cement mortar.
The smooth surface of the externally-attached rubber waterstop is bonded on the primary lining structure by adopting a chloroprene adhesive, the convex part faces the inner arc surface of the primary lining structure, the externally-attached rubber waterstop is lapped by adopting a plane hot-pressing vulcanization method, a 50-100 mm solid part can exist at a joint at a middle hole, the joint is hollow, and a slot is cut at the bottom of the middle hole to extract a core, and then the core is bonded by using glue.
The secondary lining structure concrete deformation joint is pre-embedded with a closed-cell polyethylene foam board for reserving a groove and is also used as an end template during lining of the secondary lining structure.
And chiseling the closed-cell polyethylene foam board to a depth of 30-50 mm, and filling the modified polysulfide sealant to be tightly combined with the concrete on the side wall of the deformation joint.
The butyl rubber waterproof sealant has two layers, the first layer of butyl rubber waterproof sealant tape is used for bonding concrete on the inner wall of the groove at the deformation joint and the omega rubber water stop, and the second layer of butyl rubber waterproof sealant tape is used for bonding the omega rubber water stop and the stainless steel metal pressing plate.
The radian of the omega-shaped rubber water stop belt is 180 degrees, the diameter of the omega-shaped rubber water stop belt is the width of a deformation joint, and the semicircular bulge faces to the inner cambered surface of the secondary lining structure.
The stainless steel metal pressing plate is provided with round holes at fixed positions away from the edge, the round holes are distributed at equal intervals, and the stainless steel metal pressing plate and the omega-shaped rubber water stop are firmly connected through the expansion type torque control type mechanical anchor bolt.
The notch of the closed-cell polyethylene foam board groove is plugged by adopting a mode of galvanized electric welding steel wire mesh and polymer cement mortar, the polymer cement mortar is coated in two layers, the middle layer is provided with the steel wire mesh, and the steel wire mesh is connected with the stainless steel metal pressing plate through short steel bar electric welding by utilizing short bars.
According to the waterproof structure for the thin-wall two-lining deformation joint of the sewage tunnel, the externally-attached rubber waterstop, the butyl rubber waterproof sealing tape and the omega rubber waterstop are all made of ethylene propylene diene monomer;
according to the waterproof structure for the thin-wall secondary-lining deformation joint of the sewage tunnel, the expansion type torque control type mechanical anchor bolt and the stainless steel metal pressing plate are both made of 304 stainless steel materials;
when the waterproof structure provided by the invention is used for tunnel construction, the waterproof requirement of the deformation joint of the secondary lining is met mainly through the following construction steps, so that the deformation joint and the sewage tunnel are integrated:
s1: preparing an externally-attached rubber waterstop, a butyl rubber waterproof sealing tape, an omega rubber waterstop and a stainless steel metal pressing plate which are matched with the size of the deformation joint of the secondary lining structure;
s2: brushing a chloroprene adhesive on the surface of the primary lining structure, and sticking an externally-attached rubber waterstop after waiting for about 20 minutes;
s3: when the secondary lining structure template is installed, a closed-pore polyethylene foam plate is pre-buried at a deformation joint position, the back surface of the template is pre-treated, and a groove with a certain width and depth is reserved after forming;
s4: chiseling a closed-pore polyethylene foam board with a certain depth, filling the modified polysulfide sealant, and brushing a cement-based permeable crystalline waterproof coating on the deformation joint groove;
s5: sequentially adhering a first layer of butyl rubber waterproof sealing adhesive tape, an omega rubber water stop tape and a second layer of butyl rubber waterproof sealing adhesive tape;
s6: and (3) sticking a stainless steel metal pressing plate, punching the bottom of the deformation joint groove, installing an expansion type torque control type mechanical anchor bolt, and finally plugging by using polymer cement mortar to enable the surface of the groove to be flush with the inner arc surface of the secondary lining structure.
Generally, compared with the prior art, the technical scheme of the invention can achieve the following beneficial effects:
1. the waterproof structure for the thin-wall two-lining deformation joint of the sewage tunnel can meet the waterproof requirement of the deformation joint of the secondary lining, particularly under the environment of the sewage tunnel, and can enable the deformation joint and the sewage tunnel to achieve an integrated effect through the waterproof structure, thereby solving the problem of seepage of sewage of the deformation joint in the construction process of the secondary lining with smaller thickness;
2. compared with the traditional buried structure, the deformation joint waterproof structure has the advantages that the construction is simple, the requirements of convenience and construction quality of thin-wall structure construction are met, the penetration and follow-up construction can be carried out in advance, the construction period can be effectively saved, the problem that the sealing end of the secondary lining deformation joint with smaller thickness is not sealed and not tightly poured in the construction stage can be effectively solved, the deformation joint waterproof structure is strong in overall stability and durability and good in waterproof sealing performance, and the construction quality of the deformation joint of the thin-wall structure is effectively improved. The construction process of the deformation joint structure is not influenced by construction period pressure, meanwhile, the construction process does not have large-area welding operation, and the problem of air pollution in the secondary lining construction process of the long-distance small-section tunnel is effectively solved.
Drawings
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings, in which:
FIG. 1 is a schematic view of the overall structure of a new waterproof structure for a thin-wall secondary-lining deformation joint of a sewage tunnel according to the present invention;
FIG. 2 is an enlarged partial schematic view of FIG. 1;
FIG. 3 is an enlarged partial schematic view of FIG. 1;
in the figure: 1-external-sticking type rubber waterstop, 2-closed-cell type polyethylene foam board, 3-modified polysulfide sealant, 4-butyl rubber waterproof sealing tape, 5-omega rubber waterstop, 6-expansion type torque control type mechanical anchor bolt, 7-stainless steel metal pressing board, 8-polymer cement mortar, 9-primary lining structure, 10-secondary lining structure, 11-chloroprene adhesive and 12-cement-based permeable crystalline waterproof coating.
Detailed Description
As shown in fig. 1 to fig. 3, the overall structural schematic diagram and the partial enlarged schematic diagram of a new waterproof structure of a thin-wall two-lining deformation joint of a sewage tunnel are shown, and the waterproof structure comprises an externally-attached rubber water stop 1, a closed-cell polyethylene foam plate 2, an expansion type torque control type mechanical anchor bolt 6, a stainless steel metal pressing plate 7 and polymer cement mortar 8.
The smooth surface of the externally-attached rubber waterstop 1 is bonded on the primary lining structure 9 by adopting a chloroprene adhesive 11, the convex part faces the inner arc surface of the primary lining structure 9, the externally-attached rubber waterstop 1 is lapped by adopting a plane hot-pressing vulcanization method, a joint at the middle hole position can have a 50-100 mm solid part, the joint is hollow, and a core is cut and extracted at the bottom of the middle hole and then bonded by using glue.
The closed-pore polyethylene foam plates 2 are pre-embedded in the concrete deformation joints of the secondary lining structure 10 and are used for reserving grooves, and the secondary lining structure 10 is also used as an end template during lining.
The closed-cell polyethylene foam plate 2 is chiseled to a depth of 30mm-50mm, and is filled with the modified polysulfide sealant 3 to be tightly combined with the concrete on the side wall of the deformation joint.
The butyl rubber waterproof sealing adhesive tape 4 has two layers, the first layer of butyl rubber waterproof sealing adhesive tape 4 is used for bonding groove inner wall concrete and the omega-shaped rubber water stop 5 at the deformation joint, and the second layer of butyl rubber waterproof sealing adhesive tape 4 is used for bonding the omega-shaped rubber water stop 5 and the stainless steel metal pressing plate 7.
The radian of the omega-shaped rubber water stop 5 omega-shaped part is 180 degrees, the diameter is the width of a deformation joint, and the semicircular bulge faces to the inner arc surface of the secondary lining structure 10.
The stainless steel metal pressing plate 7 is provided with round holes at fixed positions away from the edge, the round holes are distributed at equal intervals, and the stainless steel metal pressing plate 7 and the omega-shaped rubber water stop belt 5 are firmly connected through the expansion type torque control type mechanical anchor bolt 6.
The notch of 2 recesses of closed cell polyethylene foam board adopts the mode of galvanized electric welding wire net + polymer cement mortar 8 to block, and polymer cement mortar 8 coats in two-layer, and the intermediate level sets up the wire net, and the wire net utilizes short muscle and stainless steel metal pressing plate 7 to pass through the short steel bar electric welding and is connected.
Through the mutual cooperation of the materials, an effective and stable deformation joint waterproof sealing structure is formed, the integrity can be guaranteed under long-term sewage environment and external force impact, tearing and gaps caused by contraction or expansion of the deformation joint due to general external force and natural sedimentation are avoided, and the waterproof quality of the thin-wall two-lining deformation joint of the sewage tunnel is effectively improved.
When the waterproof structure provided by the invention is used for tunnel construction, the waterproof requirement of the deformation joint of the secondary lining is met mainly through the following construction steps, so that the deformation joint and the sewage tunnel are integrated:
the method comprises the following steps: reserving a groove with the width of 220mm and the depth of 30mm at a deformation joint during secondary lining;
step two: the neoprene adhesive 11 is applied to the primary lining structure 9, and after waiting for about 20 minutes, the exterior rubber waterstop 1 is attached.
Step three: when the secondary lining structure 10 template is installed, pre-burying a closed-pore polyethylene foam plate 2 at a deformation joint position;
step four: chiseling a 40mm deep closed-cell polyethylene foam board 2, filling the modified polysulfide sealant 3, and brushing a cement-based permeable crystalline waterproof coating 12 at the groove of the deformation joint;
step five: finishing the pasting 4 of the first layer of butyl rubber waterproof sealing tape 4, the omega rubber water stop 5 and the second layer of butyl rubber waterproof sealing tape 4;
step six: stainless steel metal pressing plates 7 with the width of 100mm and the thickness of 5mm are respectively stuck on two sides, holes are formed in the grooves, and M10 expansion type torque control type mechanical anchor bolts 6 are installed;
step seven: utilize polymer cement mortar 8 shutoff recess, adopt reinforcing bar electric welding to link stainless steel metal to press 7 and stainless steel wire net piece, the processing of dabbing of movement joint recess side to increase the bonding of polymer cement mortar 8 and stainless steel metal clamp plate 7 and movement joint recess side.
The construction method is simple and convenient in process, compared with the traditional buried deformation joint structure construction process, the construction can be penetrated and followed in advance, the secondary lining construction is not influenced, the waterproof quality of the deformation joint is ensured, and the construction period can be shortened.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. A waterproof structure for a thin-wall secondary lining deformation joint of a sewage tunnel is characterized by comprising: the waterproof sealing rubber comprises an externally-attached rubber waterstop (1), a closed-cell polyethylene foam board (2), a modified polysulfide sealant (3), a butyl rubber waterproof sealing adhesive tape (4), an omega-shaped rubber waterstop (5), an expansion type torque control type mechanical anchor bolt (6), a stainless steel metal pressing plate (7) and polymer cement mortar (8);
the smooth surface of the externally-attached rubber waterstop (1) is bonded on the primary lining structure (9) by adopting a chloroprene adhesive (11), the convex part faces the inner arc surface of the primary lining structure (9), the externally-attached rubber waterstop (1) is lapped by adopting a plane hot-pressing vulcanization method, a joint at a middle hole has a 50-100 mm solid part, the joint is hollow, and a core is cut at the bottom of the middle hole and bonded by using glue after being extracted;
the concrete deformation joint of the secondary lining structure (10) is pre-embedded with a closed-cell polyethylene foam plate (2) for reserving a groove, and the secondary lining structure (10) is also used as an end template during lining;
the closed-cell polyethylene foam plate (2) is chiseled to a depth of 30-50 mm, and is filled with the modified polysulfide sealant (3) to be tightly combined with the concrete on the side wall of the deformation joint;
the butyl rubber waterproof sealing adhesive tape (4) is provided with two layers, the first layer of butyl rubber waterproof sealing adhesive tape (4) is used for bonding the concrete on the inner wall of the groove at the deformation joint and the omega rubber water stop (5), and the second layer of butyl rubber waterproof sealing adhesive tape (4) is used for bonding the omega rubber water stop (5) and the stainless steel metal pressing plate (7);
the radian of an omega-shaped rubber water stop (5) is 180 degrees, the diameter is the width of a deformation joint, and a semicircular bulge faces to the inner arc surface of the secondary lining structure (10);
round holes are punched at positions, which are far away from the edge and fixed, of the stainless steel metal pressing plate (7) and are distributed at equal intervals, and the stainless steel metal pressing plate (7) is firmly connected with the omega-shaped rubber water stop (5) through an expansion type torque control type mechanical anchor bolt (6);
the notch of the groove of the closed-cell polyethylene foam board (2) is plugged by adopting a mode of galvanized electric welding steel wire mesh and polymer cement mortar (8), the polymer cement mortar (8) is coated in two layers, the middle layer is provided with the steel wire mesh, and the steel wire mesh is connected with the stainless steel metal pressing plate (7) through short steel bar electric welding by utilizing short bars.
2. The waterproof structure for the thin-wall two-lining deformation joint of the sewage tunnel according to claim 1, wherein the externally-attached rubber water stop (1), the butyl rubber waterproof sealing tape (4) and the omega rubber water stop (5) are all ethylene propylene diene monomer rubber.
3. The waterproof structure for the thin-wall secondary-lining deformation joint of the sewage tunnel according to claim 1, wherein the expansion type torque control type mechanical anchor bolt (6) and the stainless steel metal pressure plate (7) are both made of 304 stainless steel.
4. A construction method for a thin-wall two-lining deformation joint waterproof structure of a sewage tunnel is characterized by comprising the following steps of: the construction method comprises the following construction steps:
s1: preparing an externally-attached rubber water stop (1), a butyl rubber waterproof sealing adhesive tape (4), an omega rubber water stop (5) and a stainless steel metal pressing plate (7) which are matched with the size of a deformation joint of a secondary lining structure (10);
s2: brushing a chloroprene rubber adhesive (11) to the surface of the primary lining structure (9), and sticking an externally-attached rubber waterstop (1) after waiting for about 20 minutes;
s3: when a template of the secondary lining structure (10) is installed, a closed-pore polyethylene foam plate (2) is pre-buried at a deformation joint position, the back of the template is pre-processed, and a groove with a certain width and depth is reserved after molding;
s4: chiseling a closed-pore polyethylene foam board (2) with a certain depth, filling the modified polysulfide sealant (3), and brushing a cement-based permeable crystalline waterproof coating (12) at the groove of the deformation joint;
s5: sequentially adhering a first layer of butyl rubber waterproof sealing adhesive tape (4), an omega rubber water stop tape (5) and a second layer of butyl rubber waterproof sealing adhesive tape (4);
s6: and (3) pasting a stainless steel metal pressing plate (7), punching the bottom of the deformation joint groove, installing an expansion type torque control type mechanical anchor bolt (6), and finally plugging by using polymer cement mortar (8) to enable the surface of the groove to be flush with the inner arc surface of the secondary lining structure (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010550966.8A CN111663953A (en) | 2020-06-17 | 2020-06-17 | Waterproof structure for thin-wall secondary-lining deformation joint of sewage tunnel and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010550966.8A CN111663953A (en) | 2020-06-17 | 2020-06-17 | Waterproof structure for thin-wall secondary-lining deformation joint of sewage tunnel and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111663953A true CN111663953A (en) | 2020-09-15 |
Family
ID=72387493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010550966.8A Pending CN111663953A (en) | 2020-06-17 | 2020-06-17 | Waterproof structure for thin-wall secondary-lining deformation joint of sewage tunnel and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111663953A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389577A (en) * | 2021-06-18 | 2021-09-14 | 山东高速高新材料科技有限公司 | Construction method for mounting foamed aluminum plate in tunnel |
| CN114320344A (en) * | 2021-12-31 | 2022-04-12 | 中铁二院工程集团有限责任公司 | Tunnel lining structure capable of inducing deformation and rapid repairing method thereof |
-
2020
- 2020-06-17 CN CN202010550966.8A patent/CN111663953A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389577A (en) * | 2021-06-18 | 2021-09-14 | 山东高速高新材料科技有限公司 | Construction method for mounting foamed aluminum plate in tunnel |
| CN114320344A (en) * | 2021-12-31 | 2022-04-12 | 中铁二院工程集团有限责任公司 | Tunnel lining structure capable of inducing deformation and rapid repairing method thereof |
| CN114320344B (en) * | 2021-12-31 | 2023-10-03 | 中铁二院工程集团有限责任公司 | Tunnel lining structure capable of inducing deformation and rapid repair method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110029599B (en) | Prefabricated culvert steel connection structure and construction method | |
| CN101761096B (en) | Anti-crack and anti-leak construction method of arranging tower crane foundation below waterproof baseplate | |
| CN109440951B (en) | Waterproof structure for joint of new and old concrete structures and construction process | |
| CN211547827U (en) | Waterproof structure at joint of concrete bottom plates of new and old buildings | |
| CN202945622U (en) | Composite repaired structure of reinforced concrete base plate cracks in basement | |
| CN110878700A (en) | Tunnel waterproof structure and construction method thereof | |
| CN111663953A (en) | Waterproof structure for thin-wall secondary-lining deformation joint of sewage tunnel and construction method | |
| CN112376624A (en) | Secondary pouring and retaining advanced water stop structure for basement floor post-cast strip and construction method | |
| CN209837324U (en) | Tooth-groove type waterproof connecting structure for prefabricated wallboard of prefabricated building by vertical joint grouting method | |
| CN108265835B (en) | Prefabricated shear wall component assembly grouting sealing mechanism and sealing grouting method | |
| CN212507029U (en) | UHPC prefabricated formwork for underground structure interior lining wall construction | |
| CN110080796B (en) | Tunnel segment repairing process | |
| CN112901205A (en) | Soft rock large-span tunnel double-layer superposed lining support removing method and structure | |
| CN212867583U (en) | Waterproof structure for thin-wall two-lining deformation joint of sewage tunnel | |
| CN104762926B (en) | Embedded groove type aqueduct water-stop structure and construction method thereof | |
| CN108560585B (en) | Basement outer wall full assembly structure and construction method thereof | |
| CN209891256U (en) | Basement outer wall post-cast strip structure | |
| CN209873861U (en) | Sealing device for lap joint of steel corrugated plate pipe gallery plates | |
| CN207143996U (en) | A kind of underground structure spare interface temporary plugging structure | |
| CN216787205U (en) | Prefabricated piping lane waterproof construction | |
| CN114606903B (en) | Seepage-proofing reinforcing method for masonry dam | |
| CN113737728B (en) | Structure joint surface layer water stop structure for tunnel and open channel and construction method thereof | |
| CN220685976U (en) | Compressive joint prefabricated panel structure suitable for concrete faced rockfill dam | |
| CN213836546U (en) | Pre-embedding device for fixing end nut of rear-assembling rubber waterstop | |
| CN220952920U (en) | Mounting structure of pre-buried channel and template |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |