Waterproof structure for deformation joint of underground pipe gallery

Abstract

The utility model discloses a waterproof structure for a deformation joint of an underground pipe gallery, which is characterized in that a steel-edged rubber waterstop and a structural reinforcing steel bar can be fixedly connected together through a positioning clamp, a concrete surface template and a newly-poured concrete structure are connected together, the rubber waterstop can be positioned, and the rubber waterstop is not damaged. Meanwhile, notches are designed in the two ends of the steel edge rubber waterstop, the notches are about 7-8 cm, the steel edges are reserved, the steel edges of the two sections of steel edge rubber waterstop at the connecting position of the deformation joint are overlapped and anchored through rivets, and the leakage phenomenon prone to occurring at the deformation joint can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe gallery waterproofing, and in particular relates to a waterproof structure for deformation joints of an underground pipe gallery. Background Art

[0002] In the construction of integrated pipelines, waterproofing projects are very important. When the pipeline corridor is buried deep, the waterproofing project of the deformation joint in the area with high groundwater level is the focus of the project. The waterproofing design of this part usually uses embedded steel-edged rubber waterstop and stick-on rubber waterproofing belt. The main reasons for leakage in the above methods are: 1. The rubber waterstop is buried in the middle of the construction joint or deformation joint surface of the concrete casting blocks before and after the structure, and is set between the layers of structural steel bars. Once the rubber waterstop is not firmly positioned, displacement and deformation will occur, which will easily cause leakage in the project; 2. The rubber waterstop is not firmly connected, and it is easy to shift during concrete pouring, thus affecting the water-stopping effect. Utility Model Content

[0003] In response to the above problems, this application proposes a waterproof structure for the expansion joint of an underground pipe gallery. The steel-edge rubber waterstop can be fixedly connected to the structural steel bars through a positioning fixture. The concrete surface formwork and the newly cast concrete structure are connected together, and the rubber waterstop can be accurately positioned without damaging the rubber waterstop. At the same time, notches are designed at both ends of the steel-edge rubber waterstop, and the notches are about 7-8cm. The steel edges are retained, so that the steel edges of the two sections of the steel-edge rubber waterstop overlap at the junction of the expansion joints. Through rivet anchoring, leakage that is prone to occur at the expansion joint can be avoided.

[0004] The technical solution adopted by the utility model is:

[0005] A waterproof structure for expansion joints of underground pipe gallery, wherein a steel-edge rubber waterstop is arranged inside the expansion joint and is filled with polyethylene foam plastic, and notches are arranged at both ends of the steel-edge rubber waterstop, and the notches of two sections of the steel-edge rubber waterstop at the joint of the expansion joint overlap, and the steel edges on both sides of the notch are anchored by rivets;

[0006] The water-facing surface of the expansion joint is sealed by a two-component polysulfide sealing paste / water-swellable rubber strip, and the water-repellent surface is sealed by a two-component polysulfide sealing paste.

[0007] As a preferred embodiment of the above technical solution, the steel-edge rubber waterstop is connected to the structural steel bars through a positioning clamp.

[0008] Preferably, the positioning fixture includes a T-bar, an integrally formed chassis is provided at the bottom of the T-bar, a lower clamping plate and an upper clamping plate are provided above the chassis, a nut is provided above the upper clamping plate, the lower clamping plate and the upper clamping plate are respectively located on the upper and lower sides of the steel edge of the steel-edge rubber waterstop, a threaded hole is provided at the horizontal section of the T-bar, a horizontal screw is provided in the threaded hole, and the horizontal screw is tied to the structural steel bar through steel wire.

[0009] Preferably, the length of the notch is 7 cm.

[0010] As a preferred embodiment of the above technical solution, a fine stone concrete protective layer is provided on the water-facing surface of the deformation joint, a roll material reinforcement layer and a roll material waterproof layer are provided between the fine stone concrete protective layer and the deformation joint, and the roll material reinforcement layer is sealed on the top of the two-component polysulfide sealant paste.

[0011] As another preferred embodiment of the above technical solution, a C15 cushion layer is provided on the water-facing surface of the deformation joint, and a deformation joint reinforcement layer and a polyethylene foam plastic plate are provided between the C15 cushion layer and the deformation joint, and the polyethylene foam plastic plate is sealed at the bottom of the water-swelling rubber strip.

[0012] As another preferred embodiment of the above technical solution, a polyethylene foam board protection wall is provided on the water-facing surface of the deformation joint, a roll waterproof layer and a roll reinforcement layer are provided between the polyethylene foam board protection wall and the deformation joint, and the roll reinforcement layer is sealed on the outside of the two-component polysulfide sealant paste.

[0013] Beneficial effects of the utility model:

[0014] 1. The positioning fixture can be used to fix the steel-edge rubber waterstop to the structural steel bars, connect the concrete surface formwork to the newly poured concrete structure, accurately position the rubber waterstop, and not damage it.

[0015] 2. The steel edges of the two sections of steel-edged rubber waterstop strips at the junction of the expansion joints overlap and are anchored by rivets to avoid leakage that is prone to occur at the expansion joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 Shown is a schematic diagram of the waterproof structure of the deformation joint of the exterior wall panel in Example 1.

[0018] Figure 2 The figure shows a schematic diagram of the connection between the steel-edge rubber waterstop and the structural steel bars through a positioning clamp in Example 1.

[0019] Figure 3 Shown is a schematic diagram of the positioning fixture in Example 1.

[0020] Figure 4This is a schematic diagram of the notches designed at both ends of the steel-edged rubber waterstop in Example 2.

[0021] Figure 5 This is a schematic diagram of the connection between two sections of steel-edged rubber waterstop strips at the junction of the deformation joint in Example 2.

[0022] Figure 6 This is a schematic diagram of the waterproof structure of the top plate deformation joint in Example 3.

[0023] Figure 7 This is a schematic diagram of the waterproof structure of the bottom plate deformation joint in Example 4.

[0024] Among them, 1. Steel-edge rubber waterstop; 2. Polyethylene foam plastic; 3. Two-component polysulfide sealant paste; 4. Roll waterproofing layer; 5. Roll reinforcement layer; 6. Water-swelling rubber strip; 7. Polyethylene foam plastic board; 8. Positioning clamp; 801. Lower clamping plate; 802. Upper clamping plate; 803. Nut; 804. Horizontal section; 805. Horizontal screw; 9. Structural steel bars; 10. Fine stone concrete protective layer; 11. C15 cushion layer; 12. Polyethylene foam protective wall. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0027] Example 1

[0028] This embodiment proposes a waterproof structure for deformation joints of underground pipe gallery, such as Figure 1 As shown, a fine stone concrete protective layer 10 is provided on the water-facing surface of the deformation joint, a roll material reinforcement layer 5 and a roll material waterproofing layer 4 are provided between the fine stone concrete protective layer 10 and the deformation joint, a steel-edge rubber waterstop 1 is provided inside the deformation joint, and is filled with polyethylene foam plastic 2, the water-facing surface of the deformation joint is sealed by a two-component polysulfide sealant 3, and the water-removing surface is sealed by a two-component polysulfide sealant, and the roll material reinforcement layer 5 is sealed on the top of the two-component polysulfide sealant 3.

[0029] The thickness of the C20 fine stone concrete protective layer 10 is 70mm, and the rolled waterproof layer 4 is provided with two layers; the embedded waterstop is arranged in a ring along the bottom plate, side wall and top plate, and is connected to the structural steel bar 9 through a positioning clamp 8. When installed horizontally, the waterstop should be basin-shaped to prevent water seepage caused by bubbles under the waterstop.

[0030] like Figure 2 and 3 As shown, the positioning fixture 8 includes a T-bar, an integrally formed chassis is provided at the bottom of the T-bar, a lower clamping plate 801 and an upper clamping plate 802 are provided above the chassis, a nut 803 is provided above the upper clamping plate 802, the lower clamping plate 801 and the upper clamping plate 802 are respectively located on the upper and lower sides of the steel edge of the steel-edge rubber waterstop 1, a horizontal section 804 of the T-bar is provided with a threaded hole, a horizontal screw 805 is provided in the threaded hole, and the horizontal screw 805 is tied to the structural steel bar 9 by a steel wire.

[0031] The chassis and the bottom of the T-bar are welded, the upper clamping plate 802 and the lower clamping plate 801 are made of square steel plates, and the T-bar can be made of engineering waste. The horizontal screw 805 can move left and right in the threaded hole to adjust the length of both sides of the horizontal section 804, which is convenient for connection and positioning with the upper steel bar.

[0032] Example 2

[0033] On the basis of Example 1, the gaps of the two sections of the steel-edged rubber waterstop 1 at the junction of the deformation joints overlap, and the steel edges on both sides of the gaps are anchored by rivets.

[0034] Gap formation: Cut the steel edge rubber water stop 1 and the transverse seam, and control the cutting length to about 7 cm. Remove all the rubber within the length of the cut, use an angle grinder or steel brush to remove the debris on the joint, and grind it smooth, as shown in Figure 4.

[0035] Connection method: The connection length of the steel plate edge is controlled at about 45 cm, connected with 2 rows of 3 rivets. Figure 5 The above method avoids the problem of overlapping joints of waterstop strips at deformation joints, eliminates the weak link of concrete pouring, ensures the waterstop effect of the integrated pipe gallery, and improves the entity quality of concrete.

[0036] Example 3

[0037] like Figure 6 As shown, a waterproof structure of an underground pipe gallery deformation joint, such as Figure 1As shown, the water-facing surface of the deformation joint is provided with a C15 cushion layer 11, and a deformation joint reinforcement layer and a polyethylene foam plastic plate 7 are provided between the C15 cushion layer 11 and the deformation joint, and the polyethylene foam plastic plate 7 is sealed at the bottom of the water-expanding rubber strip 6. A steel-edged rubber waterstop 1 is provided inside the deformation joint, and is matched with the filling polyethylene foam plastic 2. The water-facing surface of the deformation joint is sealed by the water-expanding rubber strip 6, and its back-to-water surface is sealed by a two-component polysulfide sealant.

[0038] The size of the water-swellable rubber strip 6 is 30*30 mm.

[0039] Example 4

[0040] A waterproof structure for an underground pipe gallery expansion joint, wherein a polyethylene foam board protection wall is arranged on the water-facing surface of the expansion joint, a roll material waterproofing layer 4 and a roll material reinforcement layer 5 are arranged between the polyethylene foam board protection wall and the expansion joint, a steel-edged rubber waterstop 1 is arranged inside the expansion joint, and is filled with polyethylene foam plastic 2, and the roll material reinforcement layer 5 is sealed on the outside of a two-component polysulfide sealant paste 3.

[0041] The thickness of the polyethylene foam protection wall 12 is 50 mm.

[0042] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A waterproof structure for deformation joints of underground pipe gallery, characterized in that: A steel-edge rubber waterstop is set inside the expansion joint and filled with polyethylene foam plastic. Notches are set at both ends of the steel-edge rubber waterstop. The notches of the two sections of the steel-edge rubber waterstop at the joint of the expansion joint overlap, and the steel edges on both sides of the notch are anchored by rivets. The water-facing surface of the expansion joint is sealed by a two-component polysulfide sealant / water-swellable rubber strip, and the water-repellent surface is sealed by a two-component polysulfide sealant.

2. The underground pipe gallery expansion joint waterproof structure according to claim 1, characterized in that: The steel-edged rubber waterstop is connected to the structural steel bars through positioning clamps.

3. The underground pipe gallery expansion joint waterproof structure according to claim 2 is characterized in that: The positioning fixture includes a T-bar, an integrally formed chassis is provided at the bottom of the T-bar, a lower clamping plate and an upper clamping plate are provided above the chassis, a nut is provided above the upper clamping plate, the lower clamping plate and the upper clamping plate are respectively located on the upper and lower sides of the steel edge of the steel-edge rubber waterstop, a threaded hole is provided at the horizontal section of the T-bar, a horizontal screw is provided in the threaded hole, and the horizontal screw is tied to the structural steel bar through steel wire.

4. The underground pipe gallery expansion joint waterproof structure according to claim 2, characterized in that: The length of the notch is 7 cm.

5. The underground pipe gallery expansion joint waterproof structure according to claim 2, characterized in that: A fine stone concrete protective layer is arranged on the water-facing surface of the expansion joint, a roll material reinforcement layer and a roll material waterproof layer are arranged between the fine stone concrete protective layer and the expansion joint, and the roll material reinforcement layer is sealed on the top of the two-component polysulfide sealant paste.

6. The underground pipe gallery expansion joint waterproof structure according to claim 2, characterized in that: A C15 cushion layer is arranged on the water-facing surface of the deformation joint, and a deformation joint reinforcement layer and a polyethylene foam plastic plate are arranged between the C15 cushion layer and the deformation joint. The polyethylene foam plastic plate is sealed at the bottom of the water-expanding rubber strip.

7. The underground pipe gallery expansion joint waterproof structure according to claim 2, characterized in that: A polyethylene foam board protection wall is arranged on the water-facing surface of the expansion joint, a roll material waterproofing layer and a roll material reinforcement layer are arranged between the polyethylene foam board protection wall and the expansion joint, and the roll material reinforcement layer is sealed on the outside of the two-component polysulfide sealant paste.

Images