Floor deformation joint water retaining ridge structure for high-speed rail station building

Abstract

The utility model relates to the technical field of fabricated building construction, and particularly discloses a high-speed rail station building floor deformation joint water retaining ridge structure which comprises a main body structure formed by pouring concrete and an internal steel reinforcement framework structure. The cross section of the main body structure is rectangular; the steel reinforcement framework structure is composed of steel reinforcements and bolts. The steel bars are arranged in the longitudinal direction of the water retaining ridge in a full-length mode. The bolts are fixed to the steel bars in the longitudinal direction of the water retaining ridge and partially embedded into the main body structure. The utility model aims to solve the problems that the existing water retaining ridge is inconvenient to install and low in flexibility.

Description

Technical Field

[0001] This utility model relates to the field of building waterproofing construction technology, and in particular to a water-retaining sill structure for expansion joints in high-speed railway station buildings. Background Technology

[0002] With the increasing demands of urban development, more and more high-speed railway stations are springing up. To achieve the overall functionality and aesthetic appeal of these stations, structural expansion joints are commonly incorporated. Since high-speed railway stations are primarily used for passenger waiting areas and staff offices, they experience high passenger flow and require significant water usage for daily cleaning. When water overflows the expansion joints between floors, it can easily leak to the floor below, causing leakage problems. Therefore, installing a water-retaining sill structure can effectively solve the potential leakage problem at the floor expansion joints.

[0003] Currently, there are two main casting methods for water-retaining sills: one is to cast the prefabricated water-retaining sill components together with the main structure, and the other is to cast the water-retaining sill in two stages, after the main structure has been cast and then cast or installed.

[0004] The utility model, authorized by announcement number CN216810330U, discloses a water-retaining sill for cast-in-place floor slabs in subway stations. The water-retaining sill includes a water-retaining main body and a bottom fixed end. The bottom of the water-retaining main body is provided with a floor slab connecting protrusion. The water-retaining main body is provided with a frame, which includes a longitudinal frame and a transverse "U"-shaped frame. The water-retaining sill is cast in a high-performance concrete plant. Compared with the traditional method, it has the advantages of improving construction efficiency, reducing usage costs, mass production of the water-retaining sill, and reducing the amount of formwork used.

[0005] The disclosed utility model water-retaining curb requires the protruding end of the floor slab connection to be embedded inside the cast-in-place floor slab before the slab is poured. Because the water-retaining curb is a precast component, the cast-in-place floor slab is only supported by the formwork and internal steel reinforcement before pouring, resulting in insufficient stability. Therefore, the water-retaining curb is prone to being top-heavy during installation and fixing. It is also prone to displacement when poured together with the cast-in-place floor slab, making installation inconvenient. Furthermore, because the protruding end of the floor connection needs to be embedded inside the cast-in-place floor slab, the water-retaining curb is only suitable for pouring together with the main structure and cannot be poured a second time, resulting in low flexibility. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a water-retaining sill structure for expansion joints in high-speed railway station buildings, solving the problems of inconvenient installation and low flexibility of existing water-retaining sills.

[0007] To solve the above problems, the technical solution adopted by this utility model is: a water-retaining sill structure for expansion joints of high-speed railway station buildings, comprising a main structure formed by concrete casting and an internal steel reinforcement skeleton structure; the main structure has a rectangular cross-section; the steel reinforcement skeleton structure is composed of steel bars and bolts; the steel bars are arranged along the longitudinal direction of the water-retaining sill; the bolts are fixed to the steel bars along the longitudinal direction of the water-retaining sill and are partially embedded in the main structure.

[0008] Furthermore, the width of the main structure is more than 200mm and less than 500mm, and the height is more than 50mm and less than 300mm.

[0009] Furthermore, the number of steel bars evenly arranged along the cross-sectional direction of the water-retaining sill is one, two, or more.

[0010] Furthermore, the diameter of the reinforcing bar is above 8 mm and below 12 mm.

[0011] Furthermore, the connection between the reinforcing bar and the bolt is welding.

[0012] Furthermore, the bolts are either expansion bolts or chemical anchors.

[0013] Furthermore, the bolts are spaced 500mm apart.

[0014] Furthermore, the bolt is embedded to a depth of 1 / 3 to 1 / 2 of the height of the main structure.

[0015] The beneficial effects of this plan are:

[0016] 1. The water-retaining sill is directly fixed to the concrete structure surface using expansion bolts or chemical anchors, eliminating the need for pre-embedded connecting protrusions and avoiding the risk of positioning deviation and displacement of pre-embedded parts.

[0017] 2. This technical solution can be implemented by pre-embedding the internal steel reinforcement skeleton structure and simultaneously pouring concrete, or it can be implemented without relying on pre-embedded parts and simultaneous pouring, by directly installing prefabricated water-retaining sills on the surface of the completed concrete structure, which offers high construction flexibility. Attached Figure Description

[0018] Figure 1 This is an isometric drawing of a water-retaining sill structure used for expansion joints in high-speed railway station buildings.

[0019] Figure 2 This is a front view of a water-retaining sill structure used for expansion joints in high-speed railway station buildings.

[0020] The reference numerals in the accompanying drawings of the instruction manual include: 1. Water barrier; 2. Main structure; 31. Reinforcing steel; 32. Bolt. Detailed Implementation

[0021] The following detailed description illustrates the specific implementation method:

[0022] As attached Figure 1-2 As shown: A water-retaining sill 1 structure for expansion joints in high-speed railway station buildings includes a main structure 2 formed by concrete casting and an internal steel reinforcement skeleton structure; the main structure 2 has a rectangular cross-section; the steel reinforcement skeleton structure is composed of steel bars 31 and bolts 32; the steel bars 31 are arranged along the longitudinal direction of the water-retaining sill; the bolts 32 are fixed to the steel bars 31 along the longitudinal direction of the water-retaining sill, arranged at 500mm intervals, and partially embedded in the main structure.

[0023] The aforementioned water-retaining sill 1 structure for expansion joints in high-speed railway station buildings can be constructed by pre-embedding internal steel reinforcement frames and simultaneously pouring concrete, or by directly installing the precast water-retaining sill 1 onto the surface of the completed concrete structure without relying on pre-embedded parts and simultaneous pouring. The following will provide a detailed description of the implementation of the cast-in-place water-retaining sill 1 and the precast water-retaining sill 1 through two embodiments.

[0024] Example 1 (Cast-in-place water-retaining sill)

[0025] The main structure 2 of the water-retaining sill 1 is cast in concrete and has a rectangular cross-section. In specific implementation, the width of the main structure 2 is designed to be 200mm to 500mm, and the height to be 50mm to 300mm. Based on actual project requirements, a width of 300mm and a height of 150mm are preferred to ensure sufficient water-retaining capacity and structural stability. During concrete pouring, the slump and compaction density must be controlled according to construction specifications to avoid honeycombing or cracks.

[0026] The reinforced steel frame structure includes longitudinally continuous reinforcing bars 31 and bolts 32 fixed thereto. In specific implementation, at least one reinforcing bar 31 is installed along the longitudinal direction of the retaining wall 1, preferably two 10mm diameter HRB400 grade reinforcing bars 31, evenly distributed within the cross-section of the retaining wall 1. The diameter of the reinforcing bars 31 ranges from 8mm to 12mm, and can be adjusted according to load requirements. Bolts 32 are fixed along the longitudinal direction of the reinforcing bars 31 at equal intervals of 500mm. M10 expansion bolts or chemical anchors are used for the bolts 32, which are securely connected to the reinforcing bars 31 by welding. The embedded length of the bolts 32 is 1 / 3 to 1 / 2 of the height of the main structure 1 to ensure its anchorage strength. For example, when the main structure height is 150mm, the embedded depth of the bolts 32 is 50mm to 75mm.

[0027] Construction process steps for cast-in-place water-retaining sill 1:

[0028] 1. Laying out and positioning: Set up templates on both sides of the expansion joint and lay out the lines to determine the position and size of the water-retaining sill 1;

[0029] 2. Reinforcing steel cage installation: Tie 31 reinforcing bars and weld 32 bolts;

[0030] 3. Formwork erection: Use wooden or steel formwork to form the enclosure, and apply a release agent to the inner surface of the formwork;

[0031] 4. Concrete pouring: C20 fine aggregate concrete is used for pouring. After compaction by vibration, the surface is smoothed and cured.

[0032] 5. Curing and formwork removal: After pouring, cover with plastic film to keep it moist for 7 days. Remove the formwork after the concrete strength reaches 75% of the design value.

[0033] Example 2 (Precast Water Retaining Sill)

[0034] The water-retaining sill 1 is a precast concrete component with a rectangular cross-section. In specific implementations, the width of the precast water-retaining sill 1 is designed to be 200mm to 500mm, and the height is designed to be 50mm to 300mm. A width of 300mm and a height of 150mm are preferred to meet the requirements of standardized production and on-site installation. The precast concrete has a strength grade of C20, and a steel reinforcement skeleton is embedded within the concrete.

[0035] The precast water-retaining sill 1 has an internal embedded steel reinforcement skeleton structure comprising: at least one HRB400 grade steel bar 31, preferably two steel bars 31 with a diameter of 10mm, arranged longitudinally along the water-retaining sill 1, evenly distributed within the cross-section. The diameter of the steel bar 31 ranges from 8mm to 12mm, with 50mm of exposed length reserved at both ends for on-site connection. Bolts 32 are embedded at 500mm intervals along the longitudinal direction of the water-retaining sill 1. The bolts 32 are M10 expansion bolts or chemical anchors, and are firmly connected to the steel bar 31 by welding.

[0036] Installation process steps for precast water-retaining sill 1:

[0037] 1. Base surface treatment: Clean and grind the base surface on both sides of the expansion joint of the poured concrete floor to ensure that there is no laitance, oil stains and cracks.

[0038] 2. Positioning and layout: Mark the installation position of the water-retaining sill 1;

[0039] 3. Anchor hole construction: Drill holes at 500mm intervals on the concrete floor, with the hole diameter and depth matching the selected bolt size 32;

[0040] 4. Installation of water-retaining sill 1: Position the precast water-retaining sill 1 and fix it to the concrete floor with bolts 32.

[0041] 5. Joint sealing: A 3mm long SBS waterproof membrane is added along the gap between the water-retaining sill 1 and the floor. The waterproof membrane is connected by heat fusion, and the overlap width between the waterproof membrane and the water-retaining sill and the floor is more than 200mm.

[0042] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A water-retaining sill structure for expansion joints in high-speed railway station buildings, comprising a main structure cast in concrete and an internal steel reinforcement frame structure; the main structure has a rectangular cross-section; characterized in that: The steel reinforcement frame structure is composed of steel bars and bolts; the steel bars are arranged along the longitudinal direction of the water-retaining sill; the bolts are fixed to the steel bars along the longitudinal direction of the water-retaining sill and are partially embedded in the main structure.

2. The water-retaining sill structure for expansion joints in high-speed railway station buildings according to claim 1, characterized in that: The main structure has a width of 200mm and less than 500mm, and a height of 50mm and less than 300mm.

3. The water-retaining sill structure for expansion joints in high-speed railway station buildings according to claim 1, characterized in that: The number of steel bars evenly arranged along the cross-section of the water-retaining sill is one, two, or more.

4. A water-retaining sill structure for expansion joints in high-speed railway station buildings according to claim 1, characterized in that: The diameter of the reinforcing bars is above 8mm and below 12mm.

5. A water-retaining sill structure for expansion joints in high-speed railway station buildings according to claim 1, characterized in that: The steel bars and bolts are connected by welding.

6. A water-retaining sill structure for expansion joints in high-speed railway station buildings according to claim 1, characterized in that: The bolts are either expansion bolts or chemical anchors.

7. A water-retaining sill structure for expansion joints in high-speed railway station buildings according to claim 1, characterized in that: The bolts are spaced 500mm apart.

8. A water-retaining sill structure for expansion joints in high-speed railway station buildings according to claim 1, characterized in that: The bolt embedment depth is 1 / 3 to 1 / 2 of the height of the main structure.

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