CN212003223U - Construction joint waterproof construction suitable for reconstructed tunnel lining - Google Patents
Construction joint waterproof construction suitable for reconstructed tunnel lining Download PDFInfo
- Publication number
- CN212003223U CN212003223U CN202020436771.6U CN202020436771U CN212003223U CN 212003223 U CN212003223 U CN 212003223U CN 202020436771 U CN202020436771 U CN 202020436771U CN 212003223 U CN212003223 U CN 212003223U
- Authority
- CN
- China
- Prior art keywords
- construction joint
- lining
- construction
- waterproof
- joint
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a construction joint waterproof construction suitable for restructuring tunnel lining, including existing lining cutting, restructuring lining cutting and preliminary bracing, form the wrong platform construction joint between existing lining cutting and the restructuring lining cutting, be equipped with three at least stagnant water glues on the wrong platform construction joint, and laid waterproofing membrane between existing lining cutting and the preliminary bracing cutting; the construction method comprises the steps of partially dismantling the existing lining and forming a staggered construction joint; paving a waterproof coiled material on the surface of the existing lining, and lapping the waterproof coiled material with the waterproof coiled material supported in the initial stage, wherein the lapping width is more than 15 cm; and (3) arranging at least one water stop glue on each construction joint contact surface of the staggered construction joint, wherein the width of the water stop glue is more than or equal to 2cm, and constructing and reconstructing a lining. The utility model provides a prevent, cut, arrange the waterproof construction system that combines together, the construction joint of wrong platform structure has increased the contact surface area, has strengthened the ability of cohering of new and old concrete, has realized that the wrong joint of multilayer level is waterproof and the steel bar joint arranges.
Description
Technical Field
The utility model relates to a tunnel engineering technical field, especially a construction joint waterproof construction suitable for restructuring tunnel lining.
Background
Partial tunnels in China have quality defects and diseases such as cavities behind the existing lining, insufficient thickness of the existing lining, water leakage of construction joints, cracking of the existing lining and the like which affect the railway operation safety, the existing tunnel lining structure needs to be dismantled and reconstructed seriously, new and old concrete construction joints are inevitably generated on the contact surface of the reconstructed existing tunnel lining and the reconstructed tunnel lining, and the construction joints are weak links of whole stress and self-waterproofing of the structure.
At present, the conventional construction joint after reconstructing the tunnel lining is a planar structure, because the contact area of the construction joint is limited, the waterproof structure is only provided with a water stop glue at the middle position of the construction joint, and the reinforced concrete lining section needs to be drilled and embedded with steel bars at the existing lining construction joint in order to meet the standard requirement that the lap joint of the steel bar joint is not more than 50 percent of the same cross-sectional area, the construction process is complicated, the work efficiency is low, the original embedded type water stop belt and the water stop bar can not be recovered after the existing construction joint structure is dismantled, and the waterproof capability is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: aiming at the problems that the contact area of a construction joint is small after a tunnel lining is reconstructed, multi-level waterproofing is arranged without space, the waterproofing capacity is reduced, the bonding surface of new and old concrete is small, the whole stress of the structure at the construction joint is to be strengthened, the construction procedures of drilling and bar planting are complicated, the construction work efficiency is low and the like in the prior art, the construction joint waterproofing structure suitable for reconstructing the tunnel lining is provided.
In order to realize the purpose, the utility model discloses a technical scheme be:
the utility model provides a construction joint waterproof construction suitable for restructuring tunnel lining, includes existing lining cutting, restructuring lining cutting and preliminary bracing, form the wrong platform construction joint between existing lining cutting and the restructuring lining cutting, be equipped with three at least stagnant water glues on the wrong platform construction joint, just existing lining cutting with laid waterproofing membrane between the preliminary bracing cutting. Because the construction joint is designed into a staggered structure, the lap joint of the lining structure steel bars at the construction joint meets the standard requirement that the area of the same cross section is not more than 50 percent, no steel bars need to be drilled and embedded at the construction joint, the construction procedures are reduced, and the construction efficiency is improved.
The utility model provides a prevent, cut, arrange existing lining cutting that combines together and restructure lining cutting construction joint contact surface's waterproof construction system provides a multiple waterproof construction, and the construction joint contact surface of wrong platform structure has increased the area of contact surface, has strengthened the ability of cohering of new and old concrete, has realized that the multilevel is waterproof, has improved waterproof ability, has realized that the wrong joint of steel bar joint arranges. The utility model discloses to restructuring tunnel lining district, have maneuverability strong, safe and reliable, economic benefits and social are showing's advantage.
As the utility model discloses an optimal scheme, the wrong platform construction joint includes a plurality of construction joint contact surfaces, every be equipped with one at least on the construction joint contact surface stagnant water glue to improve waterproof ability.
As the preferred scheme of the utility model, construction joint contact surface is scribbled and is smeared permeable epoxy waterproof coating.
As the preferred scheme of the utility model, the width of stagnant water glue is more than or equal to 2 cm.
As the utility model discloses a preferred scheme, existing lining cutting with preliminary bracing waterproofing membrane's overlap joint length is greater than 15 cm.
As the utility model discloses an optimal scheme, the preliminary bracing is pre-buried to have the hoop blind pipe, just is in the lower part of restructuring lining cutting is reserved there is the water drainage tank, the hoop blind pipe with the water drainage tank is linked together, water drainage tank and tunnel side ditch are linked together to can introduce the side ditch with tunnel groundwater smoothly.
As the utility model discloses an optimal scheme, the water drainage tank includes the notch pre-buried half section PE pipe that has in the notch the surface mounting of half section PE pipe has the solid fixed ring of reinforcing bar, just half section PE pipe with be equipped with the skeleton reinforcing bar between the solid fixed ring of reinforcing bar, the intussuseption of notch is filled with little inflation cement closing body.
The utility model also discloses a construction method of construction joint waterproof construction suitable for restructuring tunnel lining, construction joint waterproof construction suitable for restructuring tunnel lining, including following step:
the method comprises the following steps: partially removing the existing lining, and forming a staggered construction joint;
step two: paving a waterproof coiled material on the surface of the existing lining, and lapping the waterproof coiled material with a waterproof coiled material supported in the initial stage, wherein the width of the lapping is more than 15 cm;
step three: each construction joint contact surface of the staggered platform construction joint is provided with at least one water stop glue, the width of the water stop glue is larger than or equal to 2cm, and the reconstructed lining is constructed.
Construction method, owing to design into wrong platform structure with tunnel lining construction joint, need not to drill the bar planting again in construction joint department, reduced construction process, improved the construction work efficiency, and realized that the multilevel is waterproof, improved waterproof ability.
As a preferred embodiment of the present invention, the third step further includes: and cleaning concrete within 20cm of the two sides of the slab staggering construction joint, and smearing permeable epoxy resin waterproof paint.
As a preferred embodiment of the present invention, the second step further includes: after the dismantling is completed, pre-burying the annular blind pipe to the position near the arch springing in the primary support, and the third step further comprises the following steps: and constructing a drainage channel positioned in the reconstructed lining.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
(1) the utility model provides a prevent, cut, arrange existing lining cutting that combines together and restructure lining cutting construction joint contact surface's waterproof construction system provides a multiple waterproof construction, and the construction joint contact surface of wrong platform structure has increased the area of contact surface, has strengthened the ability of cohering of new and old concrete, has realized that the multilevel is waterproof, has improved waterproof ability, has realized that the wrong joint of steel bar joint arranges. The utility model discloses to restructuring tunnel lining district, have maneuverability strong, safe and reliable, economic benefits and social are showing's advantage.
(2) Construction method, owing to design into wrong platform structure with tunnel lining construction joint, need not to drill the bar planting again in construction joint department, reduced construction process, improved the construction work efficiency, and realized that the multilevel is waterproof, improved waterproof ability.
Drawings
FIG. 1 is a structural schematic diagram of a construction joint waterproof construction suitable for restructuring tunnel lining.
Fig. 2 is a sectional view taken along line a-a in fig. 1.
Fig. 3 is a sectional view B-B in fig. 1.
Fig. 4 is a schematic structural view of the drainage channel of the present invention.
Icon: 1-existing lining, 2-reconstruction lining, 3-preliminary bracing, 4-circumferential blind pipe, 5-drainage channel, 51-half-section PE pipe, 52-framework steel bar, 53-steel bar fixing ring, 54-notch, 55-micro-expansion cement closing body, 6-staggered construction joint, 61-construction joint contact surface, 7-water stop glue and 8-waterproof coiled material.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
As shown in fig. 1-3, a construction joint waterproof construction suitable for restructuring tunnel lining, including existing lining 1, restructuring lining 2 and preliminary bracing 3, form wrong platform construction joint 6 between existing lining 1 and the restructuring lining 2, wrong platform construction joint 6 includes three construction joint contact surface 61, every be equipped with one on the construction joint contact surface 61 and only glue 7, the width of only glue 7 is 2 cm. And a permeable epoxy resin waterproof coating is smeared on each construction joint contact surface 61, the surface of the secondary lining concrete is cleaned by a steel wire brush before smearing, the surface of the concrete is ensured to be clean, and the using amount is not less than 0.5kg/m2And the brushing times are not less than 2 times.
In addition, after the lining 1 is removed, a circumferential blind pipe 4 is pre-buried in the primary support 3, a drainage groove 5 is reserved at the lower part of the reconstructed lining 2, the circumferential blind pipe 4 is communicated with the drainage groove 5, and the drainage groove 5 is communicated with a tunnel side ditch so as to smoothly drain underground water.
Specifically, the annular blind pipe 4 adopts a perforated corrugated pipe, is wrapped by non-woven fabric and led to the position near the arch springing, and is connected with the drainage channel 5 in sequence. As shown in fig. 4, the drainage channel 5 includes a notch 54, a half-section PE pipe 51 is pre-buried in the notch 54, a steel bar fixing ring 53 is fixed on the outer surface of the half- section PE pipe 51, 3 through-length skeleton steel bars 52 are arranged between the half-section PE pipe 51 and the steel bar fixing ring 53, and steel bar burrs are welded in a staggered manner to enhance the adhesion between the half-section PE pipe 51 and the subsequent sprayed concrete, and a micro-expansion cement closing body 55 is filled in the notch 54 to close the notch.
Example 2
A construction method of a construction joint waterproof structure suitable for reconstructing a tunnel lining, which is described in embodiment 1, is constructed, comprising the steps of:
the method comprises the following steps: the existing lining 1 is partially dismantled, the edge is cut in place by adopting a cutting process, and then the lining concrete is chiseled, so that the disturbance damage to the lining outside the dismantling range is reduced; when the construction joint is chiseled, attention should be paid to the form of the construction joint contact surface 61 to form the slab staggering construction joint 6;
step two: after the dismantling is finished, pre-burying a circumferential blind pipe 4 to the position near an arch springing in the primary support 3;
step three: before reconstructing the tunnel lining, paving a waterproof coiled material 8 on the surface of the existing lining 1, and well welding the waterproof coiled material 8 with the waterproof coiled material 8 of the primary support 3, wherein the width of the lap joint is more than 15cm, the paving process of the waterproof coiled material 8 is required to meet the requirements of relevant specifications, and the waterproof coiled material 8 is prevented from cutting a secondary lining;
step four: setting a water stop glue 7 on each construction joint contact surface 61 of the slab staggering construction joint 6, wherein the width of the water stop glue 7 is more than or equal to 2 cm;
step five: cleaning concrete within 20cm of the two sides of the slab staggering construction joint 6, and smearing permeable epoxy resin waterproof paint;
step six: and constructing a reconstructed lining 2, chiseling a groove at the inner edge of the reconstructed lining to form a drainage groove 5 serving as a drainage channel, and draining underground water into a side ditch.
As shown in FIG. 4, the notch 54 is made by a cutting saw, if the notch is cut off by structural steel bars, the tail end of the notch is smaller than the diameter of the half-section PE pipe 51 by 2-4 mm, and the notch is convenient to be tightly attached to the half-section PE pipe 51. After the grooving is finished, the groove body is washed by high-pressure water (or high-pressure air) to remove ash, dust and loose concrete blocks.
The open end of the half-section PE pipe 51 is embedded into the bottom of the groove inwards, and is fixed by a reinforcing steel bar fixing ring 53 at an annular distance of 15cm, and the anchoring depth is 5 cm; after the half-section PE pipe 51 is fixed, 3 through-length framework steel bars 52 are inserted between the half-section PE pipe 51 and the steel bar fixing ring 53, and steel bar burrs are welded in a staggered mode to enhance the bonding property between the half-section PE pipe 51 and the subsequent sprayed concrete.
After the framework steel bars 52 are installed and checked and confirmed, the framework steel bars are sealed by a micro-expansion cement sealing body 55, and after the strength is achieved, the surface is polished to be flat. The drainage channel 5 is used as a drainage channel to drain the groundwater into the side ditch.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a construction joint waterproof construction suitable for restructuring tunnel lining, a serial communication port, including existing lining (1), restructuring lining (2) and preliminary bracing (3), form stagger construction joint (6) between existing lining (1) and restructuring lining (2), be equipped with three at least stagnant water glue (7) on stagger construction joint (6), just existing lining (1) with laid waterproofing membrane (8) between preliminary bracing (3).
2. The construction joint waterproofing structure suitable for reconstructing a tunnel lining according to claim 1, wherein the slab staggering construction joint (6) comprises a plurality of construction joint contact surfaces (61), and at least one of the water stop glues (7) is provided on each of the construction joint contact surfaces (61).
3. The construction joint waterproofing structure suitable for reconstructing a tunnel lining according to claim 2, wherein said construction joint contact surface (61) is coated with a permeable epoxy resin waterproofing paint.
4. The construction joint waterproofing structure suitable for reconstructing a tunnel lining according to claim 2, wherein the width of the water stopping gel (7) is greater than or equal to 2 cm.
5. A construction joint waterproofing structure suitable for reconstructing a tunnel lining according to claim 1, wherein the lap length of the waterproofing rolls (8) of the existing lining (1) and the preliminary bracing (3) is more than 15 cm.
6. The construction joint waterproof structure suitable for reconstructing the tunnel lining as claimed in any one of claims 1 to 5, wherein the primary support (3) is pre-embedded with a circumferential blind pipe (4), a drainage channel (5) is reserved at the lower part of the reconstruction lining (2), the circumferential blind pipe (4) is communicated with the drainage channel (5), and the drainage channel (5) is communicated with the tunnel lateral ditch.
7. The construction joint waterproof structure suitable for reconstructing a tunnel lining as claimed in claim 6, wherein the drainage channel (5) comprises a notch (54), a half-section PE pipe (51) is pre-embedded in the notch (54), a reinforcing steel bar fixing ring (53) is fixed on the outer surface of the half-section PE pipe (51), a framework reinforcing steel bar (52) is arranged between the half-section PE pipe (51) and the reinforcing steel bar fixing ring (53), and a micro-expansion cement closing body (55) is filled in the notch (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020436771.6U CN212003223U (en) | 2020-03-30 | 2020-03-30 | Construction joint waterproof construction suitable for reconstructed tunnel lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020436771.6U CN212003223U (en) | 2020-03-30 | 2020-03-30 | Construction joint waterproof construction suitable for reconstructed tunnel lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212003223U true CN212003223U (en) | 2020-11-24 |
Family
ID=73421919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020436771.6U Active CN212003223U (en) | 2020-03-30 | 2020-03-30 | Construction joint waterproof construction suitable for reconstructed tunnel lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212003223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575197A (en) * | 2022-03-14 | 2022-06-03 | 中铁二院工程集团有限责任公司 | Treatment structure and treatment method for inverted arch disease of high-speed railway tunnel in mountainous area |
-
2020
- 2020-03-30 CN CN202020436771.6U patent/CN212003223U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575197A (en) * | 2022-03-14 | 2022-06-03 | 中铁二院工程集团有限责任公司 | Treatment structure and treatment method for inverted arch disease of high-speed railway tunnel in mountainous area |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110878700B (en) | Tunnel waterproof structure and construction method thereof | |
| CN107859064B (en) | Waterproof structure for connection of prefabricated pipe gallery and cast-in-situ pipe gallery and construction method | |
| CN111271097A (en) | Construction joint waterproof structure suitable for reconstructing tunnel lining and construction method thereof | |
| CN212452335U (en) | Box culvert seal structure | |
| CN212003223U (en) | Construction joint waterproof construction suitable for reconstructed tunnel lining | |
| CN104947714A (en) | End sealing door structure for immersed tube tunnel | |
| CN107524174A (en) | A kind of diaphragm wall I-shaped steel joint provided with water expandable waterstop | |
| CN112096419A (en) | Supporting structure and method for repairing tunnel secondary lining damage | |
| CN113565087A (en) | Underground continuous wall reinforcement cage structure with formwork and construction method thereof | |
| CN109723071B (en) | Construction method of double-layer steel drum drainage system built in basement floor post-cast strip | |
| CN213296693U (en) | Stifled post-cast strip waterproof construction who dredges combination | |
| CN106287001A (en) | Penstock reinforcing bar composite concrete pipe and the pipeline being made from and manufacture method | |
| CN107100099B (en) | Reinforcing method for railway culvert | |
| CN205100244U (en) | Underground structure inwall and underground continuous wall coincide face structure | |
| CN208153035U (en) | A kind of waterproof system for vcehicular tunnel corrugated steel preliminary bracing structure | |
| CN109667586B (en) | Grouting method of double-layer well wall grouting system | |
| CN214944298U (en) | Pipe jacking assembly | |
| CN110184956A (en) | A kind of construction method for reinforcing culvert | |
| CN205296105U (en) | Field irrigation is with " U " shape concrete water conservation channel | |
| CN205714225U (en) | A kind of railway culvert, tunnel defect wavy metal culvert pipe liner bracing means | |
| CN211314278U (en) | Waterproof drainage system in tunnel | |
| CN211524175U (en) | Groove-removing lane-dividing layered supporting water-supplementing structure | |
| CN212271002U (en) | Pipe joint and inner partition plate integral prefabricated pipe gallery construction system | |
| CN113585369A (en) | Construction method for joining new and old concrete of reconstructed basement | |
| CN214616669U (en) | Tunnel infiltration is discharged and mud jacking structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |