CN213173843U - Waterproof overlap joint structure of new and old underground works roof - Google Patents
Waterproof overlap joint structure of new and old underground works roof Download PDFInfo
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- CN213173843U CN213173843U CN202020734117.3U CN202020734117U CN213173843U CN 213173843 U CN213173843 U CN 213173843U CN 202020734117 U CN202020734117 U CN 202020734117U CN 213173843 U CN213173843 U CN 213173843U
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Abstract
The utility model discloses a new and old underground works roof waterproof overlap joint structure, strengthen composite coiled material and isolation layer including steel limit waterstop, fine aggregate concrete, two-sided butyl adhesive tape, polymer. Adopt C40 mould to build reinforced concrete on the roof of new and old concrete and pour, two-sided butyl adhesive tape, polymer are strengthened compound coiled material and isolation layer and are arranged into the U type and connect the raft structure and lay on C40 mould builds reinforced concrete, adopt the fine aggregate concrete to backfill in the corner that the U type connects the raft structure and form the oblique cross-section. The outside that compound coiled material was strengthened to the polymer is equipped with the protective layer, and the isolation layer setting is between concrete protection layer and waterproofing membrane. The structure adopts the waterproof coiled material and adopts U-shaped splicing, so that a seepage path is increased, and the seepage-proofing performance is improved; the double-layer 1.5 mm-thick double-faced butyl adhesive tape increases the adhesiveness of a new waterproof layer and an old waterproof layer; and a steel-edge water stop belt is adopted to prevent water leakage of the construction joint.
Description
Technical Field
The utility model relates to a waterproof overlap joint structure of new and old underground works roof, waterproof lapped novel structure when especially existing structures such as subway station, underground cavern are built.
Background
Along with the continuous development of underground space, the utilization rate of land resources is increased sharply, and the requirement for expanding the original underground structure is increased. However, water leakage is one of the most common diseases in underground engineering, and concerns about construction safety and service life. Even for the underground structure of once only pouring, integrative construction, the problem of percolating water is difficult to distinguish, and is more difficult to add to the old structure that has the requirement of developing.
Patent No. CN 109372029 a discloses a waterproof structure and method for an underground structure external wall joint portion, the structure includes: the waterproof structure comprises a concrete cushion layer, an MBP coiled material waterproof layer, a concrete layer, a water stop steel plate and metal nails; concrete cushion pours subaerial, concrete cushion building includes ground outer wall body and concrete layer wall body, the concrete layer wall body is located ground outer wall body towards indoor one side, ground outer wall body and concrete layer wall body have one section vertical concatenation seam, laid one deck MBP coiled material waterproof layer between concrete layer wall body and concrete cushion and concrete layer wall body and the ground outer wall body, and the MBP coiled material waterproof layer extends out from the gap between concrete layer wall body and the ground outer wall body, buckles and laminates ground outer wall body upper surface to it is fixed with the metal peg.
The metal nails used for fixing the MBP coiled material waterproof layer in the prior art can damage the coiled material and influence the waterproof effect; the waterproof structure of the joint part of the external wall of the underground structure is not damaged by an old structure waterproof layer, and the value of the waterproof lap joint of the roof of the new and old structure is general by reference. After the opening is broken by the old structure, the original waterproof roll is damaged and cannot be repaired, and the problem of water leakage is not easy to control when the waterproof roll is lapped with the new structure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to design a new and old underground engineering bottom plate waterproof lap joint structure, which adopts a U-shaped joint of waterproof coiled materials, increases a seepage path and improves the seepage-proofing performance; the double-layer 1.5 mm-thick double-faced butyl adhesive tape increases the adhesiveness of a new waterproof layer and an old waterproof layer; and a steel-edge water stop belt is adopted to prevent water leakage of the construction joint.
In order to achieve the purpose, the utility model discloses a technical scheme be a new and old underground works roof waterproof overlap joint structure, including steel limit waterstop, fine aggregate concrete, two-sided butyl adhesive tape, polymer enhancement composite coiled material and isolation layer.
C40 mould reinforced concrete is adopted to pour on the top plate of the new and old concrete, and the steel-edge water stop belt is fixed in the C40 mould reinforced concrete structure of the top plate of the new and old concrete; double-sided butyl adhesive tape, polymer are strengthened compound coiled material and isolation layer and are arranged into the U type and connect the raft structure and lay on C40 mould construction reinforced concrete, adopt the fine aggregate concrete to backfill in the corner that the U type connects the raft structure and form the oblique section. The outside that compound coiled material was strengthened to the polymer is equipped with the protective layer, and the isolation layer setting is between concrete protection layer and waterproofing membrane.
Furthermore, the polymer reinforced composite coiled material adopts a double-layer structure, and the double-sided butyl adhesive tape is arranged between the double-layer polymer reinforced composite coiled material.
Furthermore, the concrete protective layer is a fine stone concrete layer with the thickness not less than 70 mm.
Further, the isolating layer is made of petroleum asphalt felt, crude rubber felt, soft polyvinyl chloride coiled material, waterproof cold glue, waterproof coating and oil-seepage-proof cement glass fiber cloth.
Compared with the prior art, the utility model provides a new and old underground structure roof overlap joint waterproof problem, adopted steel limit waterstop and U type to connect the raft waterproofing membrane structure to form dual waterproof protective screen, prevent overlap joint structure percolating water.
Drawings
Fig. 1 is the utility model discloses new and old underground works bottom plate waterproof overlap joint structural schematic diagram.
In the figure, I is a waterproof lap joint structure of an old underground engineering roof, and II is a waterproof lap joint structure of a new underground engineering roof; 1 is a steel-edged water stop.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
The utility model discloses a technical scheme be a new and old underground works roof waterproof overlap joint structure, strengthen compound coiled material and isolation layer including steel limit waterstop, fine aggregate concrete, two-sided butyl adhesive tape, polymer. The waterproof lapping structure II of the new underground engineering roof is lapped on the waterproof lapping structure I of the old underground engineering roof, and the roof waterproof layer is a bottom leveling structure of the waterproof lapping structure I of the old underground engineering roof; c40 molded reinforced concrete is poured on the waterproof layer of the top plate and the waterproof lap joint structure II of the bottom top of the new underground engineering, and the C40 molded reinforced concrete is a bottom flat base surface structure of the waterproof lap joint structure I of the top plate of the old underground engineering and the waterproof lap joint structure II of the top plate of the new underground engineering;
c40 mould reinforced concrete is adopted to pour on the top plate of the new and old concrete, and the steel-edge water stop belt is fixed in the C40 mould reinforced concrete structure of the top plate of the new and old concrete; double-sided butyl adhesive tape, polymer are strengthened compound coiled material and isolation layer and are arranged into the U type and connect the raft structure and lay on C40 mould construction reinforced concrete, adopt the fine aggregate concrete to backfill in the corner that the U type connects the raft structure and form the oblique section. The outside that compound coiled material was strengthened to the polymer is equipped with the protective layer, and the isolation layer setting is between concrete protection layer and waterproofing membrane.
Furthermore, the polymer reinforced composite coiled material adopts a double-layer structure, and the double-sided butyl adhesive tape is arranged between the double-layer polymer reinforced composite coiled material.
Furthermore, the concrete protective layer is made of fine stone concrete with the thickness not less than 70 mm.
Further, the isolating layer is made of petroleum asphalt felt, crude rubber felt, soft polyvinyl chloride coiled material, waterproof cold glue, waterproof coating and oil-seepage-proof cement glass fiber cloth.
The steel-edged water stop is firmly fixed in the new and old concrete structures, so that the new and old concrete structures are stressed uniformly and tightly, and the water leakage of construction joints is effectively prevented and treated;
double-sided butyl adhesive tape, polymer are strengthened compound coiled material and isolation layer and are arranged into U type and connect the raft structure, carry out dual protection to the control of percolating water.
C20 fine aggregate concrete is backfilled at the corner of the U-shaped racking joint structure to form an oblique section, so that wrinkles generated during laying of the polymer reinforced composite coiled material are avoided, and damage caused by extruding the waterproof coiled material through earth backfilling after the top plate is constructed is effectively avoided;
the double-sided butyl adhesive has very good air tightness, extremely strong adhesive force, excellent weather resistance, aging resistance and waterproofness, has the effects of sealing, damping, protecting and the like on the surface of an adherend, and realizes the close adhesion of an upper layer material and a lower layer material;
in order to avoid the influence of diseases such as cracking of the protective layer and the like on the waterproof layer, an isolating layer is arranged between the protective layer and the waterproof coiled material, and the isolating layer is made of petroleum asphalt felt, crude rubber asphalt felt, soft polyvinyl chloride coiled material, waterproof cold glue material, waterproof coating, oil-proof cement-impregnated glass fiber cloth and the like.
The concrete protective layer protects the waterproof lap joint material;
c40 mould building reinforced concrete P8 with excellent impervious grade is adopted to cast the top plate, so that the water leakage of the top plate is reduced.
Compared with the prior art, the utility model provides a new and old underground structure roof overlap joint waterproof problem, adopted steel limit waterstop and U type to connect the raft waterproofing membrane structure to form dual waterproof protective screen, prevent overlap joint structure percolating water.
Claims (4)
1. The utility model provides a new and old underground works roof waterproof overlap joint structure which characterized in that: comprises a steel-edged water stop, fine aggregate concrete, a double-sided butyl adhesive tape, a polymer reinforced composite coiled material and an isolating layer;
c40 mould reinforced concrete is adopted to pour on the top plate of the new and old concrete, and the steel-edge water stop belt is fixed in the C40 mould reinforced concrete structure of the top plate of the new and old concrete; the double-sided butyl adhesive tape, the polymer reinforced composite coiled material and the isolation layer are arranged into a U-shaped joint structure and laid on C40 molded reinforced concrete, and the corners of the U-shaped joint structure are backfilled by fine aggregate concrete to form an oblique section; the double-sided butyl adhesive tape is arranged between the double-layer polymer reinforced composite coiled materials; the outside that compound coiled material was strengthened to the polymer is equipped with the protective layer, and the isolation layer setting is between concrete protection layer and waterproofing membrane.
2. The new and old underground engineering roof waterproof lap joint structure according to claim 1, wherein: the polymer reinforced composite coiled material adopts a double-layer structure, and the double-sided butyl adhesive tape is arranged between the double-layer polymer reinforced composite coiled materials.
3. The new and old underground engineering roof waterproof lap joint structure according to claim 1, wherein: the concrete protective layer is a fine stone concrete layer with the thickness not less than 70 mm.
4. The new and old underground engineering roof waterproof lap joint structure according to claim 1, wherein: the isolating layer is made of petroleum asphalt felt, crude rubber felt, soft polyvinyl chloride coiled material, waterproof cold glue material, waterproof coating or oil-seepage-proof cement glass fiber cloth.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020734117.3U CN213173843U (en) | 2020-05-07 | 2020-05-07 | Waterproof overlap joint structure of new and old underground works roof |
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| CN202020734117.3U CN213173843U (en) | 2020-05-07 | 2020-05-07 | Waterproof overlap joint structure of new and old underground works roof |
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| CN213173843U true CN213173843U (en) | 2021-05-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506416A (en) * | 2022-09-26 | 2022-12-23 | 华北水利水电大学 | Lining grouting waterproof structure for joint of new concrete and old concrete in underground engineering and construction process |
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2020
- 2020-05-07 CN CN202020734117.3U patent/CN213173843U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506416A (en) * | 2022-09-26 | 2022-12-23 | 华北水利水电大学 | Lining grouting waterproof structure for joint of new concrete and old concrete in underground engineering and construction process |
| CN115506416B (en) * | 2022-09-26 | 2024-03-12 | 华北水利水电大学 | Lining grouting waterproof structure of junction between new concrete and old concrete of underground engineering and construction process |
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