Underground passage top plate post-cast strip waterproof structure

Abstract

The utility model relates to a waterproof structure for a post-cast strip of a top plate of an underground passage. The waterproof structure comprises a waterproof component and a waterproof layer component, the waterproof and waterproof assembly is connected into the top plate body assembly and used for leakage water stopping of the top plate body assembly. And the waterproof layer assembly is arranged above the top plate main body assembly and is used for preventing water of the top plate main body assembly. The waterproof structure for the post-cast strip of the top plate of the underground passage is provided for overcoming the existing defects, the waterproof effect is better, and the safety and the use function of the structure are guaranteed.

Description

Technical Field

[0001] The utility model relates to a waterproof structure of a post-cast strip of an underground passage top plate. Background Art

[0002] With the rapid development of my country's economy and the improvement of residents' living standards, the current situation of urban traffic congestion has become an important factor restricting the sustainable development of urban economy; utilizing underground space and building underground passages has become an effective way to alleviate urban traffic congestion.

[0003] The waterproof system of the underground passage directly affects the structural safety and use function of the project. The existing waterproof structure, especially the post-cast strip, is relatively weak and more prone to water leakage, affecting the use function. Therefore, a waterproof structure of the post-cast strip of the underground passage top plate is proposed to address the above problems. Utility Model Content

[0004] The utility model aims to overcome the existing defects and provide a waterproof structure of a post-cast strip of an underground passage top plate, which has a better waterproof effect and ensures the safety and use function of the structure.

[0005] The technical solution to achieve the above object is: a waterproof structure of a post-cast strip of an underground passage top plate, including an anti-waterproof component and a waterproof layer component;

[0006] The anti-waterproof component is connected inside the top plate main body component and is used to stop leakage of the top plate main body component; the waterproof layer component is arranged above the top plate main body component and is used to waterproof the top plate main body component.

[0007] Preferably, the roof main body assembly comprises two sections of cast roof sections, and a roof post-cast strip is cast between the two sections of cast roof sections;

[0008] The anti-waterproof component is connected in the post-cast strip of the top plate.

[0009] Preferably, the waterproof component includes a pre-buried grouting pipe and a water-stop adhesive, and the water-stop adhesive is arranged at the connection seam between the post-cast strip of the top plate and the cast section of the top plate;

[0010] The pre-buried grouting pipe is arranged in the post-cast strip of the top plate, and a portion of the lower end of the pre-buried grouting pipe protrudes from the lower end surface of the post-cast strip of the top plate.

[0011] Preferably, the waterproof layer assembly includes an propylene hydrochloric acid spray waterproof layer, which is sprayed on the two cast sections of the top slab and above the post-cast strip of the top slab; an alkali-resistant glass fiber mesh cloth is laid on the upper layer of the propylene hydrochloric acid spray waterproof layer, a waterproof membrane is laid on the upper layer of the alkali-resistant glass fiber mesh cloth, a composite geomembrane is laid on the upper layer of the waterproof membrane, and fine stone concrete is laid on the upper layer of the composite geomembrane.

[0012] Preferably, the side wall of the cast section of the top plate is in an inverted "convex" shape, and the water-stopping adhesive is arranged on the inverted "convex" plane of the cast section of the top plate.

[0013] Preferably, there are two water-stopping adhesives, which are respectively located on both sides of the top plate post-cast strip.

[0014] Preferably, there are two pre-buried grouting pipes, which are respectively located on both sides of the lower end surface of the top plate post-cast zone.

[0015] The beneficial effects of the utility model are as follows: the waterproof structure of the post-cast strip of the top slab of the underground channel is achieved by arranging water-stop glue at the connecting seam between the post-cast strip of the top slab and the poured section of the top slab; a pre-buried grouting pipe is arranged in the post-cast strip of the top slab; an propylene hydrochloric acid spray film waterproof layer is sprayed above the poured section of the top slab and the post-cast strip of the top slab, an alkali-resistant glass fiber mesh cloth is laid on the upper layer of the propylene hydrochloric acid spray film waterproof layer, a waterproof membrane is laid on the upper layer of the alkali-resistant glass fiber mesh cloth, a composite geomembrane is laid on the upper layer of the waterproof membrane, and fine stone concrete is laid on the upper layer of the composite geomembrane; the waterproofing of the construction joint of the post-cast strip is strengthened, the waterproofing effect is better, and the safety and use function of the structure are guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the waterproof structure of the post-cast strip of the top plate of the underground passage according to the utility model.

[0017] In the figure: 1. Cast section of top slab; 2. Post-cast strip of top slab; 3. Pre-buried grouting pipe; 4. Water-stop glue; 5. Acrylic hydrochloric acid spray waterproof layer; 6. Alkali-resistant glass fiber mesh cloth; 7. Waterproof membrane; 8. Composite geomembrane; 9. Fine stone concrete. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] The utility model will be further described below in conjunction with the accompanying drawings.

[0020] like Figure 1As shown, a waterproof structure of a post-cast strip of an underground passage top plate includes an anti-waterproof component and a waterproof layer component; the anti-waterproof component is connected to the top plate main body component and is used to stop leakage of the top plate main body component; the waterproof layer component is arranged above the top plate main body component and is used to waterproof the top plate main body component.

[0021] Specifically, the main roof assembly includes two sections of cast roof sections 1, and a roof post-cast strip 2 is cast between the two sections of cast roof sections 1; the side wall of the cast roof section 1 is in an inverted "convex" shape, and the water-stop glue 4 is arranged on the inverted "convex" plane of the cast roof section 1. The waterproof assembly is connected in the roof post-cast strip 2. The roof post-cast strip 2 is arranged in a part with less stress and deformation. Before pouring, the surface of the construction joint should be roughened and cleaned, and the interface agent should be applied, and then the concrete should be poured in time.

[0022] Specifically, the waterproof component includes a pre-buried grouting pipe 3 and a water-stopping adhesive 4. The water-stopping adhesive 4 is arranged at the connection seam between the top plate post-cast strip 2 and the top plate cast section 1. There are two water-stopping adhesives 4, which are respectively located on both sides of the top plate post-cast strip 2.

[0023] Specifically, the pre-buried grouting pipe 3 is arranged in the top plate post-casting strip 2, and the lower end of the pre-buried grouting pipe 3 protrudes a part of the lower end surface of the top plate post-casting strip 2. There are two pre-buried grouting pipes 3, which are respectively located on both sides of the lower end surface of the top plate post-casting strip 2. The pre-buried grouting pipe 3 is exposed about 5 cm from the structure surface, and the mouth is well protected. After the structure is stable and the water level is restored, if there is leakage, grouting can be used to stop water through the grouting pipe, and the grouting liquid uses ultrafine cement or other chemical slurry.

[0024] Specifically, the water-stop glue 4 is a water-swelling water-stop glue, which is pasted on the joint position of the post-casting belt. The cross-sectional size after curing is 10mm×20mm. The water-stop glue should be in close contact with the base surface of the construction joint, and the joint position adopts the butt joint method.

[0025] Specifically, the waterproof layer assembly includes an propylene hydrochloric acid spray waterproof layer 5, which is sprayed on the two sections of the top plate poured section 1 and the top plate post-casting strip 2, and is sprayed on both sides of the construction joint by not less than 0.5m; the alkali-resistant glass fiber mesh cloth 6 is laid on the top of the propylene hydrochloric acid spray waterproof layer 5, and the alkali-resistant glass fiber mesh cloth 6 is an alkali-resistant glass fiber mesh cloth of 16 to 20 meshes, and is laid on the waterproof reinforcement layer 5 with equal width; the waterproof roll 7 is laid on the top of the alkali-resistant glass fiber mesh cloth 6, and the waterproof roll 7 is an H-type reaction bonding polymer membrane-based wet-laid waterproof roll, which is laid on the top plate poured section 1 and the top plate post-casting strip 2. A composite geomembrane 8 is laid on the top of the waterproof roll 7, and the waterproof isolation layer 8 is a 300g / m2 composite geomembrane, which is laid entirely on the waterproof layer 7; fine stone concrete 9 is laid on the composite geomembrane 8. The waterproof protective layer 9 is a fine stone concrete with a thickness of 70 mm, and is configured with a single row of bidirectional steel bars with a diameter of 8 mm and a spacing of 200 mm. It is poured above the waterproof isolation layer 8 and maintenance work is done to prevent cracks from occurring.

[0026] The waterproof structure of the post-cast strip of the top slab of the local underground channel is as follows: a water-stop glue 4 is arranged at the connecting seam between the post-cast strip 2 of the top slab and the poured section 1 of the top slab; a pre-buried grouting pipe 3 is arranged in the post-cast strip 2 of the top slab; an propylene hydrochloric acid spray waterproof layer 5 is sprayed above the poured section 1 of the top slab and the post-cast strip 2 of the top slab, an alkali-resistant glass fiber mesh cloth 6 is laid on the upper layer of the propylene hydrochloric acid spray waterproof layer 5, a waterproof membrane 7 is laid on the upper layer of the alkali-resistant glass fiber mesh cloth 6, a composite geomembrane 8 is laid on the upper layer of the waterproof membrane 7, and fine stone concrete 9 is laid on the upper layer of the composite geomembrane 8; the waterproofing of the construction joint of the post-cast strip is strengthened, the waterproofing effect is better, and the safety and use function of the structure are guaranteed.

[0027] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A waterproof structure of a post-cast strip of an underground passage roof, characterized in that: Including anti-waterproof components and waterproof layer components; The anti-waterproof component is connected inside the top plate main body component and is used to stop water leakage of the top plate main body component; the waterproof layer component is arranged above the top plate main body component and is used to waterproof the top plate main body component; The roof main body assembly comprises two sections of cast roof sections (1), and a roof post-cast strip (2) is cast between the two sections of cast roof sections (1); The anti-waterproof component is connected inside the top plate post-cast strip (2); The waterproof component comprises a pre-buried grouting pipe (3) and a water-stopping adhesive (4), wherein the water-stopping adhesive (4) is arranged at the connection seam between the post-cast strip (2) of the top plate and the cast section (1) of the top plate; The pre-buried grouting pipe (3) is arranged in the top plate post-casting strip (2), and a portion of the lower end of the pre-buried grouting pipe (3) protrudes from the lower end surface of the top plate post-casting strip (2); The waterproof layer assembly comprises an propylene hydrochloric acid spray waterproof layer (5), and the propylene hydrochloric acid spray waterproof layer (5) is sprayed on the two sections of the top plate cast sections (1) and the top plate post-cast strip (2); an alkali-resistant glass fiber mesh cloth (6) is laid on the upper layer of the propylene hydrochloric acid spray waterproof layer (5), a waterproof roll (7) is laid on the upper layer of the alkali-resistant glass fiber mesh cloth (6), a composite geomembrane (8) is laid on the upper layer of the waterproof roll (7), and fine stone concrete (9) is laid on the upper layer of the composite geomembrane (8).

2. The underground passage roof post-cast strip waterproof structure according to claim 1, characterized in that: The side wall of the cast section (1) of the top plate is in an inverted "convex" shape, and the water-stopping glue (4) is arranged on the inverted "convex" plane of the cast section (1) of the top plate.

3. The underground passage roof post-cast zone waterproof structure according to claim 1, characterized in that: There are two water-stopping adhesives (4), which are respectively located on both sides of the top plate post-cast strip (2).

4. The underground passage top plate post-cast zone waterproof structure according to claim 1, characterized in that: There are two pre-buried grouting pipes (3), which are respectively located on both sides of the lower end surface of the top plate post-casting strip (2).

Images