Pipe gallery deformation joint construction method

Abstract

The invention discloses a pipe gallery deformation joint construction method. According to the construction method, a bottom plate, a bottom pouring formwork, a pipe gallery, a pair of side pouring formworks and a top pouring formwork are included; the bottom pouring formwork is installed on the upper surface of the bottom plate, the pipe gallery is installed on the bottom pouring formwork, the side pouring formworks are installed on the side surfaces of the pipe gallery, and the top pouring formwork is installed on the upper surface of the pipe gallery. And the waterproof capacity of the pipe gallery deformation joint is improved, the structure is relatively simple, and use is convenient.

Description

Technical Field

[0001] The invention relates to the field of underground pipe gallery waterproofing, and in particular to a pipe gallery deformation joint construction method. Background Art

[0002] The construction joints and deformation joints of the main structure of the tunnel are the focus of structural waterproofing. From the construction level, the back-sticking rubber waterstop has become a technical difficulty in the entire waterproofing construction, and it is also a key point affecting the construction quality. In the second phase of traditional construction, the installation steps of the back-sticking rubber waterstop are as follows: before pouring the side walls of the main structure, the waterstops on both sides are stretched upward and fixed, and temporarily fixed to the side of the foundation pit by binding ropes. After the side walls and top slabs are poured, before the top slab concrete is completely set, the upper section of the back-sticking rubber waterstop is bent and covered on the top slab concrete when the concrete has a certain plasticity, and then compacted.

[0003] However, in the actual construction process, the installation effect of the back-sticking rubber waterstop on the side wall and the top plate is poor. For the side wall, the rubber waterstop has no horizontal fixation and vertical compaction. In the actual construction effect, many waterstops are not tightly fitted to the concrete, have horizontal deviations, and are half buried in the concrete. For the top plate, the rubber waterstop covers the top plate concrete after the concrete is poured, and gaps are easily generated between the teeth and the concrete. Therefore, in order to solve this problem, it is very necessary to design a method for constructing expansion joints of the corridor. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a method for constructing expansion joints of a pipe gallery, which solves the problem that the installation effect of the back-sticked rubber waterstop strips on the side walls and the top plate ends is poor during the actual construction process. For the side walls, the rubber waterstop strips are not fixed horizontally and compacted vertically, and the actual construction effect will result in many problems such as loose fit between the waterstop strips and the concrete, lateral deviation, and half of the waterstop strips being buried in the concrete. For the top plate, the rubber waterstop strips cover the top plate concrete after the concrete is poured, and a gap is easily generated between the teeth and the concrete.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pipeline corridor deformation joint construction method, the construction method comprising: Base plate, bottom casting formwork, pipe gallery, a pair of side casting formwork and top casting formwork; The bottom casting template is installed on the upper surface of the bottom plate, the pipe gallery is installed on the bottom casting template, a pair of side casting templates are installed on the side surface of the pipe gallery, and the top casting template is installed on the upper surface of the pipe gallery; First, the corresponding position is open-excavated. After the construction of the base plate is completed, the bottom casting template is installed on the base plate and casting is carried out. After casting is completed, the bottom casting template is removed, and then the pipe gallery is constructed and installed. After the installation is completed, the side casting template is installed and casting is carried out. After casting is completed, the side casting template is removed, and the top casting template is installed and casting is carried out. After casting is completed, the top casting template is removed, and finally landfill is carried out to complete the construction.

[0006] Preferably, the bottom casting template casting layer includes: C15 cushion layer, coiled material, water-swellable rubber strip, rubber waterstop, polyethylene foam board and two-component polysulfide sealant; The C15 cushion layer is cast at the bottom casting formwork, the coiled material is laid on the upper surface of the C15 cushion layer, the water-swelling rubber strip is laid on the upper surface of the coiled material, the rubber waterstop is laid on the upper surface of the water-swelling rubber strip, the polyethylene foam board is laid on the upper surface of the rubber waterstop, and the two-component polysulfide sealant is laid on the upper surface of the polyethylene foam board.

[0007] Preferably, the side casting template casting layer includes: a two-component polysulfide sealant, a pair of polyethylene foam boards, a rubber water stop, a coiled material reinforcement layer, a side wall waterproof material and a foam board protection wall; The two-component polysulfide sealant is laid in the side casting formwork, the two-component polysulfide sealant is in contact with the pipe gallery, a pair of polyethylene foam boards are laid on the two-component polysulfide sealant, the rubber waterstop is laid between the pair of polyethylene foam boards, the roll material reinforcement layer is laid on the polyethylene foam board, the side wall waterproofing material is laid on the roll material reinforcement layer, and the foam board protective wall is laid on the side wall waterproofing material.

[0008] Preferably, the top casting template casting layer includes: a two-component polysulfide sealant, a pair of polyethylene foam boards, a rubber water stop, an additional roll material for the expansion joint, and a fine stone concrete protective layer; Therefore, the two-component polysulfide sealant is laid on the top casting formwork, the two-component polysulfide sealant is in contact with the pipe gallery, a pair of polyethylene foam boards are laid on the two-component polysulfide sealant, the rubber waterstop is laid between the pair of polyethylene foam boards, the additional roll material for the expansion joint is laid on the polyethylene foam board, and the fine stone concrete protective layer is cast on the additional roll material for the expansion joint.

[0009] Preferably, the thickness of the fine stone concrete protective layer is 40 mm-60 mm.

[0010] Preferably, the construction method is as follows: S1. After excavation is completed at the designated location, the base plate is laid; S2. After the base plate is laid, install the bottom casting formwork; S3. After the bottom casting formwork is installed, C15 cushion layer - coiled material - water-expandable rubber strip - polyethylene foam board - rubber waterstop - polyethylene foam board - two-component polysulfide sealant are cast and laid in sequence; S4. After pouring and laying are completed and the demoulding strength is reached, the bottom pouring formwork is removed; S5. Lay the pipe gallery; S6. Install the side casting formwork on the side surface of the pipe gallery; S7. After the side casting formwork is installed, two-component polysulfide sealant-polyethylene foam board-rubber water stop-polyethylene foam board-rolled material reinforcement layer-side wall waterproof material-foam board protection wall are laid in sequence; S8. After the laying is completed and the demoulding strength is reached, the side casting formwork is removed; S9. Install the top casting formwork on the upper surface of the pipe gallery; S10. After the top pouring formwork is installed, pour and lay two-component polysulfide sealant-polyethylene foam board-rubber water stop-polyethylene foam board-extension joint additional roll-fine stone concrete protective layer in sequence; S11. After pouring and laying are completed and the demoulding strength is reached, the top pouring formwork is removed; S12. Complete the construction and backfill. Beneficial Effects

[0011] The present invention provides a pipe gallery deformation joint construction method. The method has the following beneficial effects: the pipe gallery deformation joint construction method can better waterproof, is very convenient, and reduces unnecessary troubles. During construction, the rubber water stop is shaped by a polyethylene foam board to prevent deviation. A waterproof structure is added to the outer side of the rubber water stop, thereby achieving a better waterproof effect. During laying and pouring, the generation of gaps can be better prevented, and the waterproof ability of the pipe gallery deformation joint is improved. The structure is relatively simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a pipeline corridor deformation joint construction method described in the present invention.

[0013] Figure 2 This is a casting diagram of the bottom casting template described in the present invention.

[0014] Figure 3 This is a casting diagram of the side casting formwork described in the present invention.

[0015] Figure 4 This is a casting diagram of the top casting template described in the present invention.

[0016] In the figure: Base plate 10, bottom casting formwork 20, pipe gallery 30, side casting formwork 40, top casting formwork 50. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-4 The present invention provides a technical solution: a pipe gallery deformation joint construction method, the construction method comprising: a bottom plate 10, a bottom casting template 20, a pipe gallery 30, a pair of side casting templates 40 and a top casting template 50, the bottom casting template 20 is installed on the upper surface of the bottom plate 10, the pipe gallery 30 is installed on the bottom casting template 20, a pair of side casting templates 40 are installed on the side surface of the pipe gallery 30, and the top casting template 50 is installed on the upper surface of the pipe gallery 30. First, the corresponding position is open-cut, the bottom plate 10 is installed on the bottom casting template 20, and the side casting template 40 is installed on the side surface of the pipe gallery 30. The top casting template 50 is installed on the upper surface of the pipe gallery 30. After the construction is completed, the bottom casting template 20 is installed on the bottom plate 10 and casting is carried out. After the casting is completed, the bottom casting template 20 is removed, and then the pipe gallery 30 is constructed and installed. After the installation is completed, the side casting template 40 is installed and casting is carried out. After the casting is completed, the side casting template 40 is removed, and the top casting template 50 is installed and casting is carried out. After the casting is completed, the top casting template 50 is removed, and finally landfill is carried out to complete the construction.

[0019] The bottom casting formwork 20, the side casting formwork 40 and the top casting formwork 50 are used for limited paving and pouring, and are removed after the paving and pouring are completed to prevent overflow.

[0020] The casting layer of the bottom casting formwork 20 includes: a C15 cushion layer, a coiled material, a water-swelling rubber strip, a rubber waterstop, a polyethylene foam board and a two-component polysulfide sealant. The C15 cushion layer is cast at the bottom casting formwork, the coiled material is laid on the upper surface of the C15 cushion layer, the water-swelling rubber strip is laid on the upper surface of the coiled material, the rubber waterstop is laid on the upper surface of the water-swelling rubber strip, the polyethylene foam board is laid on the upper surface of the rubber waterstop, and the two-component polysulfide sealant is laid on the upper surface of the polyethylene foam board.

[0021] The C15 cushion layer is used for padding, and then the water is released through the water-swelling rubber strips and rubber waterstops. The polyethylene foam board is used for extrusion and limiting. Finally, the gaps in the pipe gallery 30 are sealed with a two-component polysulfide sealant.

[0022] The casting layer of the side casting formwork 40 includes: a two-component polysulfide sealing paste, a pair of polyethylene foam boards, a rubber waterstop, a roll material reinforcement layer, a side wall waterproofing material and a foam board protective wall. The two-component polysulfide sealing paste is laid in the side casting formwork 40, the two-component polysulfide sealing paste is in contact with the pipe gallery 30, a pair of polyethylene foam boards are laid on the two-component polysulfide sealing paste, the rubber waterstop is laid between the pair of polyethylene foam boards, the roll material reinforcement layer is laid on the polyethylene foam board, the side wall waterproofing material is laid on the roll material reinforcement layer, and the foam board protective wall is laid on the side wall waterproofing material.

[0023] The gaps are sealed with two-component polysulfide sealant, the rubber waterstop is squeezed and limited with polyethylene foam board, waterproofing is achieved with rubber waterstop and side wall waterproofing materials, and protection is achieved with foam board protection walls.

[0024] The casting layer of the top casting formwork 50 includes: a two-component polysulfide sealant, a pair of polyethylene foam boards, a rubber waterstop, an additional roll material for expansion joints and a fine stone concrete protective layer, so the two-component polysulfide sealant is laid on the top casting formwork 50, the two-component polysulfide sealant is in contact with the pipe gallery 30, a pair of polyethylene foam boards are laid on the two-component polysulfide sealant, the rubber waterstop is laid between the pair of polyethylene foam boards, the additional roll material for expansion joints is laid on the polyethylene foam boards, and the fine stone concrete protective layer is cast on the additional roll material for expansion joints.

[0025] The thickness of the fine stone concrete protective layer is 40mm-60mm.

[0026] The construction method is as follows: S1, excavation is completed at the designated location, and after excavation is completed, the bottom plate 10 is laid; S2, after the base plate 10 is laid, the bottom casting formwork 20 is installed; S3, after the installation of the bottom casting formwork 20 is completed, C15 cushion layer - coiled material - water-expandable rubber strip - polyethylene foam board - rubber water stop - polyethylene foam board - two-component polysulfide sealant are cast and laid in sequence; S4, after pouring and laying are completed and the demoulding strength is reached, the bottom pouring formwork 20 is removed; S5, laying the pipe gallery 30; S6, installing the side casting template 40 on the side surface of the pipe gallery 30; S7. After the side casting formwork 40 is installed, two-component polysulfide sealing paste-polyethylene foam board-rubber water stop-polyethylene foam board-rolled material reinforcement layer-side wall waterproof material-foam board protection wall are laid in sequence; S8, after the laying is completed and the demoulding strength is reached, the side casting formwork 40 is removed; S9, installing the top casting template 50 on the upper surface of the pipe gallery 30; S10, after the top casting formwork 50 is installed, two-component polysulfide sealing paste - polyethylene foam board - rubber water stop - polyethylene foam board - additional roll material for deformation joint - fine stone concrete protective layer are cast and laid in sequence; S11, after pouring and laying are completed and the demoulding strength is reached, the top pouring formwork 50 is removed; S12. Complete the construction and backfill.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe gallery expansion joint construction method, characterized in that: The construction method comprises: A bottom plate (10), a bottom casting formwork (20), a pipe gallery (30), a pair of side casting formworks (40), and a top casting formwork (50); The bottom casting template (20) is installed on the upper surface of the bottom plate (10), the pipe gallery (30) is installed on the bottom casting template (20), a pair of side casting templates (40) are installed on the side surfaces of the pipe gallery (30), and the top casting template (50) is installed on the upper surface of the pipe gallery (30); First, the corresponding position is open-cut, and after the construction of the base plate (10) is completed, the bottom casting template (20) is installed on the base plate (10) and casting is carried out. After the casting is completed, the bottom casting template (20) is removed, and then the pipe gallery (30) is constructed and installed. After the installation is completed, the side casting template (40) is installed and casting is carried out. After the casting is completed, the side casting template (40) is removed, and the top casting template (50) is installed and casting is carried out. After the casting is completed, the top casting template (50) is removed, and finally landfill is carried out to complete the construction.

2. A pipe gallery expansion joint construction method according to claim 1, characterized in that: The casting layer of the bottom casting template (20) comprises: a C15 cushion layer, a coiled material, a water-swellable rubber strip, a rubber waterstop, a polyethylene foam board and a two-component polysulfide sealing paste; The C15 cushion layer is cast at the bottom casting formwork, the coiled material is laid on the upper surface of the C15 cushion layer, the water-swelling rubber strip is laid on the upper surface of the coiled material, the rubber waterstop is laid on the upper surface of the water-swelling rubber strip, the polyethylene foam board is laid on the upper surface of the rubber waterstop, and the two-component polysulfide sealant is laid on the upper surface of the polyethylene foam board.

3. A pipe gallery expansion joint construction method according to claim 1, characterized in that: The casting layer of the side casting template (40) comprises: a two-component polysulfide sealing paste, a pair of polyethylene foam boards, a rubber water stop, a coiled material reinforcement layer, a side wall waterproof material and a foam board protection wall; The two-component polysulfide sealing paste is laid in the side casting formwork (40), the two-component polysulfide sealing paste is in contact with the pipe gallery (30), a pair of polyethylene foam boards are laid on the two-component polysulfide sealing paste, the rubber water stop is laid between the pair of polyethylene foam boards, the coiled material reinforcement layer is laid on the polyethylene foam board, the side wall waterproofing material is laid on the coiled material reinforcement layer, and the foam board protection wall is laid on the side wall waterproofing material.

4. A pipe gallery expansion joint construction method according to claim 1, characterized in that: The casting layer of the top casting template (50) comprises: a two-component polysulfide sealing paste, a pair of polyethylene foam boards, a rubber water stop, an additional roll material for the expansion joint, and a fine stone concrete protective layer; Therefore, the two-component polysulfide sealing paste is laid on the top casting template (50), the two-component polysulfide sealing paste is in contact with the pipe gallery (30), a pair of polyethylene foam boards are laid on the two-component polysulfide sealing paste, the rubber water stop is laid between the pair of polyethylene foam boards, the additional roll material for the expansion joint is laid on the polyethylene foam boards, and the fine stone concrete protective layer is cast on the additional roll material for the expansion joint.

5. A pipe gallery expansion joint construction method according to claim 1, characterized in that: The thickness of the fine stone concrete protective layer is 40mm-60mm.

6. A pipe gallery expansion joint construction method according to claim 1, characterized in that: The construction method is as follows: S1. After excavation is completed at the designated location, the bottom plate (10) is laid; S2, after the base plate (10) is laid, the bottom casting formwork (20) is installed; S3, after the bottom casting formwork (20) is installed, C15 cushion layer - coiled material - water-swelling rubber strip - polyethylene foam board - rubber water stop - polyethylene foam board - two-component polysulfide sealant are cast and laid in sequence; S4, after pouring and laying are completed and the demoulding strength is reached, the bottom pouring formwork (20) is removed; S5, laying the pipe gallery (30); S6, installing the side casting template (40) on the side surface of the pipe gallery (30); S7. After the side casting formwork (40) is installed, two-component polysulfide sealing paste-polyethylene foam board-rubber water stop-polyethylene foam board-rolled material reinforcement layer-side wall waterproofing material-foam board protection wall are laid in sequence; S8, after the laying is completed and the demoulding strength is reached, the side casting formwork (40) is removed; S9, installing the top casting template (50) on the upper surface of the pipe gallery (30); S10, after the top pouring formwork (50) is installed, pour and lay two-component polysulfide sealing paste-polyethylene foam board-rubber water stop-polyethylene foam board-extension joint additional roll-fine stone concrete protective layer in sequence; S11, after pouring and laying are completed and the demoulding strength is reached, the top pouring formwork (50) is removed; S12. Complete the construction and backfill.

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