CN213572061U - Waterproof overlap joint structure of new and old underground works bottom plate - Google Patents
Waterproof overlap joint structure of new and old underground works bottom plate Download PDFInfo
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- CN213572061U CN213572061U CN202020735209.3U CN202020735209U CN213572061U CN 213572061 U CN213572061 U CN 213572061U CN 202020735209 U CN202020735209 U CN 202020735209U CN 213572061 U CN213572061 U CN 213572061U
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Abstract
The utility model discloses a new and old underground engineering bottom plate waterproof lap joint structure, which is divided into an old underground engineering bottom plate waterproof lap joint structure and a new underground engineering bottom plate waterproof lap joint structure; the new underground engineering bottom plate waterproof lap joint structure is lapped on the old underground engineering bottom plate waterproof lap joint structure. The non-woven fabric buffer layer, the double-sided butyl adhesive tape and the self-adhesive film waterproof roll material adopted by the utility model can perform waterproof treatment on the bottom plate of the old underground engineering in a non-destructive manner, so that the waterproof roll material of the bottom plate of the old underground engineering and the new underground engineering is not destroyed, and the waterproof effect of the old bottom plate and the new bottom plate is ensured to be consistent; a steel-edge water stop belt is buried in a concrete protective layer between the old underground engineering bottom plate waterproof lap joint structure and the new underground engineering bottom plate waterproof lap joint structure II, and water leakage of construction joints can be effectively prevented.
Description
Technical Field
The utility model relates to a waterproof overlap joint structure of new and old underground works bottom plate, 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 also inevitable, 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. In the prior art, the metal nails used for fixing the MBP coiled material waterproof layer 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 lapping reference value of the waterproof structure of the bottom plates of new and old underground engineering is general. Meanwhile, after the opening is broken in the old structure, the original waterproof roll is damaged and cannot be repaired, so that 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 plurality of structural forms to improve the lap joint waterproof effect of the new and old underground structure bottom plate, uses self-adhesive film waterproof coiled materials, double-sided butyl adhesive tapes and non-woven fabric buffer layers as composite waterproof materials to realize the effective lap joint of the new and old coiled materials and increase the anti-permeability performance; meanwhile, a steel-edge water stop belt is adopted to prevent water leakage of a construction joint.
In order to achieve the purpose, the technical scheme adopted by the utility model is a new and old underground engineering bottom plate waterproof lap joint structure which is divided into an old underground engineering bottom plate waterproof lap joint structure I and a new underground engineering bottom plate waterproof lap joint structure II; the new underground engineering bottom plate waterproof lap joint structure II is lapped on the old underground engineering bottom plate waterproof lap joint structure I, and the deformation joint 1 is arranged at the lapped vertical position of the old underground engineering bottom plate waterproof lap joint structure I and the new underground engineering bottom plate waterproof lap joint structure II.
The bottom plate waterproof layer is a bottom flattening structure of the old underground engineering bottom plate waterproof lap joint structure I; pouring a concrete cushion on the bottom of the waterproof layer of the bottom plate and the waterproof lap joint structure II of the new underground engineering bottom plate, wherein the concrete cushion is a bottom flat base surface structure of the waterproof lap joint structure I of the old underground engineering bottom plate and the waterproof lap joint structure II of the new underground engineering bottom plate; and (3) paving a non-woven fabric buffer layer, a double-faced butyl adhesive tape and a self-adhesive film waterproof coiled material on the flat base surface structure at the bottom in sequence, and then pouring a concrete protective layer and C40 molded reinforced concrete. The non-woven fabrics buffer layer, two-sided butyl adhesive tape, the self-adhesive film waterproofing membrane that new underground works bottom plate waterproof overlap joint structure II laid adopt the arrangement mode of ladder form, have promptly reduced the influence of movement joint seepage to newly-built structure, add a ladder along the direction of height for, and each layer material of new underground works bottom plate waterproof overlap joint structure II evenly arranges along the ladder.
And a steel-edge water stop belt 2 is embedded in a concrete protective layer between the old underground engineering bottom plate waterproof lap joint structure I and the new underground engineering bottom plate waterproof lap joint structure II.
Further, the thickness of the concrete cushion is not less than 20 mm.
Further, the thickness of the concrete protective layer and the C40 molded reinforced concrete is not less than 50 mm.
Further, the thickness of the self-adhesive film waterproof roll is not less than 1.5 mm.
Further, the thickness of the double-sided butyl adhesive tape is 1.5-2.5 mm.
Compared with the prior art, the waterproof lap joint structure for the new and old underground engineering bottom plates can perform waterproof treatment on the old underground engineering bottom plates in a non-destructive mode, does not damage waterproof coiled materials of the existing new and old underground engineering bottom plates, and ensures that the waterproof effects of the new and old bottom plates are consistent; the non-woven fabric buffer layer protects the self-adhesive film waterproof coiled material, and sharp objects generated by old structure breaking are prevented from damaging the coiled material; the steel-edged water stop is buried in the concrete protective layer between the old underground engineering bottom plate waterproof lap joint structure and the new underground engineering bottom plate waterproof lap joint structure II, so that the construction joint can be effectively prevented from leaking water, and the dual waterproof effect is achieved.
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 bottom plate, and II is a waterproof lap joint structure of a new underground engineering bottom plate; 1 is a deformation joint; 2 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.
A new and old underground engineering bottom plate waterproof lap joint structure is divided into an old underground engineering bottom plate waterproof lap joint structure I and a new underground engineering bottom plate waterproof lap joint structure II; the new underground engineering bottom plate waterproof lap joint structure II is lapped on the old underground engineering bottom plate waterproof lap joint structure I, and the deformation joint 1 is arranged at the lapped vertical position of the old underground engineering bottom plate waterproof lap joint structure I and the new underground engineering bottom plate waterproof lap joint structure II.
The bottom plate waterproof layer is a bottom flattening structure of the old underground engineering bottom plate waterproof lap joint structure I; pouring a concrete cushion on the bottom of the waterproof layer of the bottom plate and the waterproof lap joint structure II of the new underground engineering bottom plate, wherein the concrete cushion is a bottom flat base surface structure of the waterproof lap joint structure I of the old underground engineering bottom plate and the waterproof lap joint structure II of the new underground engineering bottom plate; and (3) paving a non-woven fabric buffer layer, a double-faced butyl adhesive tape and a self-adhesive film waterproof coiled material on the flat base surface structure at the bottom in sequence, and then pouring a concrete protective layer and C40 molded reinforced concrete. The non-woven fabric buffer layer, the double-sided butyl adhesive tape and the self-adhesive film waterproof roll laid by the new underground engineering bottom plate waterproof lap joint structure II adopt a step-shaped arrangement mode.
And a steel-edge water stop belt 2 is embedded in a concrete protective layer between the old underground engineering bottom plate waterproof lap joint structure I and the new underground engineering bottom plate waterproof lap joint structure II.
Further, the thickness of the concrete cushion is not less than 20 mm.
Further, the thickness of the concrete protective layer and the C40 molded reinforced concrete is not less than 50 mm.
Further, the thickness of the self-adhesive film waterproof roll is not less than 1.5 mm.
Further, the thickness of the double-sided butyl adhesive tape is 1.5-2.5 mm.
The implementation process of the structure is as follows:
after the earthwork is excavated, concrete cushion layers are poured on the old underground engineering bottom plate waterproof lap joint structure I and the new underground engineering bottom plate waterproof lap joint structure II, and a flat and stable working base plane is provided for waterproof construction;
the non-woven fabric buffer layer protects the self-adhesive film waterproof coiled material, and sharp objects generated by old structure breaking are prevented from damaging the coiled material;
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;
the concrete protective layer protects the self-adhesive film waterproof coiled material, the double-sided butyl adhesive tape and the non-woven fabric buffer layer;
and C40 mould pouring reinforced concrete with excellent impermeability grade is adopted to pour the bottom plate.
The non-woven fabrics buffer layer, two-sided butyl adhesive tape, the self-adhesive film waterproofing membrane that new underground works bottom plate waterproof overlap joint structure II laid adopt the arrangement mode of ladder form, can effectively promote the horizontal tensile force of self-adhesive film waterproofing membrane, two-sided butyl adhesive tape, non-woven fabrics buffer layer, avoid producing the fold.
Claims (5)
1. The utility model provides a new and old underground works bottom plate waterproof overlap joint structure which characterized in that: the method comprises the following steps of dividing the structure into an old underground engineering bottom plate waterproof lap joint structure and a new underground engineering bottom plate waterproof lap joint structure; the new underground engineering bottom plate waterproof lap joint structure is lapped on the old underground engineering bottom plate waterproof lap joint structure, and the deformation joint is arranged at the lapped vertical position of the old underground engineering bottom plate waterproof lap joint structure and the new underground engineering bottom plate waterproof lap joint structure;
the bottom plate waterproof layer is a bottom flat structure of a waterproof lap joint structure of the bottom plate of the old underground engineering; pouring a concrete cushion on the bottom of the waterproof lapping structure of the bottom plate and the new underground engineering bottom plate, wherein the concrete cushion is a bottom flat base surface structure of the waterproof lapping structure of the old underground engineering bottom plate and the waterproof lapping structure of the new underground engineering bottom plate; sequentially paving a non-woven fabric buffer layer, a double-sided butyl adhesive tape and a self-adhesive film waterproof coiled material on the bottom flat base surface structure, pouring a concrete protective layer and C40 molded reinforced concrete; the non-woven fabric buffer layer, the double-sided butyl adhesive tape and the self-adhesive film waterproof roll which are laid by the novel underground engineering bottom plate waterproof lap joint structure adopt a step-shaped arrangement mode;
a steel edge water stop is buried in a concrete protective layer between the old underground engineering bottom plate waterproof lap joint structure and the new underground engineering bottom plate waterproof lap joint structure.
2. The new and old underground engineering bottom plate waterproof lap joint structure according to claim 1, wherein: the thickness of the concrete cushion is not less than 20 mm.
3. The new and old underground engineering bottom plate waterproof lap joint structure according to claim 1, wherein: the thickness of the concrete protective layer and the C40 molded reinforced concrete is determined according to the strength, the stress performance and the environmental factors, and is not less than 50 mm.
4. The new and old underground engineering bottom plate waterproof lap joint structure according to claim 1, wherein: the thickness of the self-adhesive film waterproof coiled material is not less than 1.5 mm.
5. The new and old underground engineering bottom plate waterproof lap joint structure according to claim 1, wherein: the thickness of the double-sided butyl adhesive tape is 1.5-2.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020735209.3U CN213572061U (en) | 2020-05-07 | 2020-05-07 | Waterproof overlap joint structure of new and old underground works bottom plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020735209.3U CN213572061U (en) | 2020-05-07 | 2020-05-07 | Waterproof overlap joint structure of new and old underground works bottom plate |
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| CN213572061U true CN213572061U (en) | 2021-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775697A (en) * | 2022-05-16 | 2022-07-22 | 中铁十一局集团有限公司 | Method for processing deformation joint at joint of new structure and old structure |
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2020
- 2020-05-07 CN CN202020735209.3U patent/CN213572061U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775697A (en) * | 2022-05-16 | 2022-07-22 | 中铁十一局集团有限公司 | Method for processing deformation joint at joint of new structure and old structure |
| CN114775697B (en) * | 2022-05-16 | 2024-02-13 | 中铁十一局集团有限公司 | Method for processing deformation joint at joint of new and old structures |
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