Basement top plate with step-shaped haunched structure

Abstract

The utility model relates to a basement roof with a step-shaped haunching structure, a step-shaped haunching structure mode is adopted at the position of a plate support, the step-shaped haunching structure comprises at least one horizontal step, so that the plate support is thickened step by step in the vertical direction, and the edge of the step is a 90-degree right angle. The step-shaped haunching method is simple and convenient, and the problems that in a traditional oblique haunching mode, the formwork erecting difficulty is large, the precision requirement is high, and the construction efficiency is low are effectively solved. By optimizing the connection method at the corner, the connection angle of all the plates is ensured to be a 90-degree right angle and is not influenced by the shape of the plates, the construction difficulty is greatly reduced, and the operation is simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to a basement top plate with a stepped axil structure. Background Art

[0002] The basement top plate usually bears a large span and load. In order to meet the requirements of anti-seepage, the code stipulates the minimum plate thickness. Therefore, the design usually adopts a large plate structure without a secondary beam in the middle of the span. In this structure, by adding haunches at the support position, the reinforcement of the plate support can be effectively reduced, and the thickness of the plate in the span can be reduced, thereby improving the economy, rationality of force, and anti-seepage and anti-cracking performance. This method has been gradually applied to actual engineering projects.

[0003] However, the current method of adding axils is mainly to add axils obliquely at the support. This method has the following objective disadvantages:

[0004] Difficulty in formwork, high precision requirements, low construction efficiency, and high formwork processing costs:

[0005] Diagonal axils require accurate arrangement of diagonal formwork, especially at corners. The template intersection point is usually the intersection of two triangular sections in a perpendicular or oblique direction. This intersection method makes formwork difficult, requires high precision, has low construction efficiency, and high formwork processing costs. This situation is even more serious for irregular plates.

[0006] The different lifting heights of pipelines increase the difficulty of processing and installing the lifting equipment:

[0007] The oblique armhole method causes the basement pipe lifting height to be different on the left and right. The lifting equipment cannot be prefabricated in the factory and must be specially made at the construction site, which increases the difficulty of processing and installation, prolongs the construction time, and increases cost.

[0008] Due to the above problems, the promotion of the oblique arm-adding method has been affected, and many projects still use the flat plate method without arm-adding. Utility Model Content

[0009] The utility model aims to provide a basement top plate with a stepped axil structure which is simple, convenient and has reduced construction difficulty.

[0010] The purpose of the utility model is achieved in this way:

[0011] A basement roof with a stepped axil structure, characterized in that a stepped axil structure is adopted at the plate support, wherein the stepped axil comprises at least one horizontal step, so that the plate support is gradually thickened in the vertical direction, and the edges of the steps are all 90-degree right angles.

[0012] Reduce the difficulty of formwork construction: The step-shaped arm-adding method proposed in this patent is simple and convenient, which effectively solves the problems of difficult formwork, high precision requirements and low construction efficiency in the traditional oblique arm-adding method. By optimizing the intersection method at the corner, it is ensured that the intersection angle of all panels is 90 degrees, which is not affected by the shape of the panel, greatly reducing the difficulty of construction and making the operation easier.

[0013] Reduce the difficulty of template construction: Since the edges of the stepped axils are all 90-degree right angles, template layout and installation are simpler and more intuitive. Compared with the traditional oblique axil method, this patented design avoids the complex angled template handover, significantly reducing the construction difficulty and precision requirements, thereby improving construction efficiency.

[0014] Improve construction efficiency and reduce construction time: The stepped axil design simplifies the template installation process, allowing construction workers to complete template layout more quickly. The uniform right-angle step edge reduces adjustment and correction time, speeding up the construction progress and shortening the construction period.

[0015] Reduce the cost of formwork processing and installation: The 90-degree right-angle step edge design allows the formwork and support system to be prefabricated and standardized in the factory, reducing the cost of on-site processing and adjustment. Prefabricated components reduce material waste and on-site processing costs, while reducing labor costs.

[0016] Enhanced structural performance: The stepped axil design makes the plate support gradually thicker in the vertical direction, optimizes the force distribution, and effectively reduces the thickness of the plate in the middle of the span. This design improves the bearing capacity of the top plate and enhances the overall force rationality and stability of the structure.

[0017] Improved anti-seepage and crack resistance: The step-by-step thickening design increases the thickness of the slab, which helps to enhance the anti-seepage and crack resistance of the basement top slab, meet strict anti-seepage requirements, extend the service life of the structure, and enhance durability.

[0018] Simplify the installation of pipe hangers: The horizontal steps with stepped axils ensure the uniform installation height of the hangers, so that pipe hangers can be prefabricated in large quantities in the factory, and on-site installation is faster and more convenient. The uniform height design reduces the complexity of on-site processing and customization of hangers, and reduces the difficulty and cost of installation.

[0019] Simplify the installation of the formwork support system: Since the step height is consistent, the height of the formwork support system is also unified, and there is no need to perform complex calculations and on-site adjustments based on different heights. The unified support height simplifies the design and installation of the support system, reduces the difficulty of installation, and further saves time and cost.

[0020] Promote engineering application and promotion: The step-shaped axil design simplifies the construction process, improves construction efficiency and economy, and reduces construction difficulty and cost. This improvement helps construction units and construction units to more easily accept and promote new technologies, and promotes the widespread application of step-shaped axil large slabs in actual projects.

[0021] The purpose of the utility model can also be solved by the following technical measures:

[0022] Furthermore, the heights of the steps of the stepped axils are consistent.

[0023] Reduce construction complexity: Since the height of each step of the stepped abutment is consistent, there is no need to frequently adjust the formwork height during construction. The uniform height design makes formwork layout and installation simpler, reducing the complexity and risk of errors in construction.

[0024] Improve construction efficiency: The design of consistent step height simplifies the construction process and reduces the time construction workers spend adjusting the formwork and support height. This consistency improves construction efficiency, shortens construction period, and helps to complete the project on time.

[0025] Save template processing and installation costs: Highly consistent stepped abutments allow templates and support systems to be prefabricated in the factory, mass-produced standardized components, and reduce the cost of on-site processing and adjustment. Prefabricated components not only save material costs, but also reduce the time and labor costs of on-site installation.

[0026] Ensure uniform height of pipe hangers: The highly consistent design ensures uniform installation height of pipe hangers, avoiding the height inconsistency problem caused by the traditional oblique axilization method. This uniformity allows pipe hangers to be prefabricated in factories, making on-site installation faster and more convenient, reducing the complexity and cost of custom processing.

[0027] Simplify the installation of the formwork support system: Since the step height is consistent, the height of the formwork support system is also unified, and there is no need to perform complex calculations and on-site adjustments based on different heights. The unified support height simplifies the design and installation of the support system, reduces the difficulty of installation, and further saves time and cost.

[0028] Improve the structural stress performance: The uniform height of the stepped axil design makes the plate support thicker step by step in the vertical direction, which enhances the plate's stress capacity and reduces the plate support reinforcement and plate mid-span thickness. This design optimizes the stress distribution of the structure and improves the economy and rationality of the overall structure.

[0029] Enhanced anti-seepage and anti-cracking performance: The stepped armpit design increases the plate thickness, which helps to improve the plate's anti-seepage and anti-cracking performance, meet the strict requirements of the basement top plate for anti-seepage, and extend the service life of the structure.

[0030] Promote the application and promotion of engineering: Since the height of each step of the step-shaped axil is consistent, the construction process is more standardized and simplified, which helps to reduce the time for construction units to learn and adapt to new technologies and reduce the risks and difficulties of engineering implementation. This design improves the operability and economy of the technology, which is conducive to its wide promotion and application in actual engineering projects.

[0031] The beneficial effects of the utility model are as follows:

[0032] The utility model and the step-shaped arm-adding method proposed in this patent are simple and convenient, and effectively solve the problems of difficult formwork, high precision requirements and low construction efficiency in the traditional oblique arm-adding method. By optimizing the intersection method at the corner, it is ensured that the intersection angle of all panels is 90 degrees, which is not affected by the shape of the panel, greatly reduces the construction difficulty and makes the operation easier.

[0033] In the utility model, since the edges of the step-shaped axils are all 90-degree right angles, the template layout and installation are simpler and more intuitive. Compared with the traditional oblique axilization method, this patented design avoids the complicated intersection of the oblique angle templates, significantly reduces the construction difficulty and precision requirements, and thus improves the construction efficiency.

[0034] The utility model adopts a step-by-step thickening design to increase the thickness of the plate, which helps to enhance the anti-seepage and anti-cracking performance of the basement top plate, meet strict anti-seepage requirements, extend the service life of the structure, and enhance durability.

[0035] The utility model has a highly consistent design to ensure uniform installation height of the pipe hanger, avoiding the height inconsistency problem caused by the traditional oblique arm method. This uniformity allows the pipe hanger to be prefabricated in the factory, making on-site installation faster and more convenient, reducing the complexity and cost of custom processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of adding haunches to a step form.

[0037] Figure 2 This is the plan layout of the roof step and arm structure.

[0038] Figure 3 for Figure 2 AA section view.

[0039] Figure 4 This is the plan view of pipeline lifting.

[0040] Figure 5 Figure 4 BB cross-sectional view.

[0041] Figure 6 This is an economic benefit calculation chart. DETAILED DESCRIPTION

[0042] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0043] Example, combined with Figures 1 to 6 As shown, a basement roof with a stepped axil structure adopts a stepped axil construction method at the plate support, wherein the stepped axil 5 includes at least one horizontal step 6, so that the plate support is gradually thickened in the vertical direction, and the edges of the steps are all 90-degree right angles.

[0044] Furthermore, the heights of the steps of the stepped axils are consistent.

[0045] Figure 4 , Figure 5 Reference numerals in the figures:

[0046] Exhaust smoke duct 1, strong and weak current bridge 2, fire fighting PIPE 3, pipe hanger 4.

[0047] Figure 6 In the paper, by comparison, it can be found that for the two plate thicknesses (250mm, 180mm), both adding slanted haunches and adding straight haunches have economic advantages over not adding haunches. Without considering that the template quotation for adding slanted haunches may be higher, adding slanted haunches is slightly more economical than adding straight haunches, but the difference is not large. In addition, this article also introduces the difficulty of processing and installing slanted haunches, which prolongs the construction time and increases the cost. Therefore, giving priority to adding straight haunches to reduce the comprehensive cost of large frame beam plates.

[0048] Reduce construction complexity:

[0049] The edges of each step of the stepped axil are all 90-degree right angles and have the same height, making the template layout and installation simpler and more intuitive. It avoids the complex bevel intersection problem in traditional oblique axilization, reduces the construction difficulty and precision requirements, and thus improves construction efficiency.

[0050] Improve construction efficiency:

[0051] The uniform step design simplifies the construction process and reduces the time construction workers spend adjusting the formwork and support height. Since all steps are at the same height, the formwork and support system can be quickly arranged, significantly shortening the construction time.

[0052] Save construction costs:

[0053] The uniform height and right-angle edge design allow the formwork and support system to be prefabricated in the factory, mass-producing standardized components and reducing on-site processing and adjustment costs. Prefabricated components not only save material costs, but also reduce on-site installation time and labor costs.

[0054] Ensure uniform height of spreaders:

[0055] The uniform height step-shaped abutment design ensures the consistency of the installation height of the hanger, avoiding the height inconsistency problem caused by the traditional oblique abutment method. Pipe hangers can be prefabricated in the factory, making on-site installation faster and more convenient, reducing the complexity and cost of custom processing.

[0056] Simplify the installation of formwork support systems:

[0057] Since the step height is consistent, the height of the formwork support system is also unified, which simplifies the design and installation of the support system. There is no need for complex on-site calculations and adjustments to the support height, further reducing the difficulty and time cost of installation.

[0058] Enhanced structural performance:

[0059] The stepped axil design makes the plate support thicker step by step in the vertical direction, optimizes the force distribution, effectively reduces the thickness of the plate in the middle of the span, enhances the bearing capacity of the top plate, and improves the overall force rationality and stability of the structure.

[0060] Improve the anti-seepage and anti-cracking performance:

[0061] The step-by-step thickening design increases the thickness of the slab, which helps to enhance the impermeability and crack resistance of the basement top slab, meet strict impermeability requirements, extend the service life of the structure and enhance durability.

[0062] Promote the application and promotion of engineering:

[0063] The step-shaped axil design simplifies the construction process, improves construction efficiency and economy, and reduces construction difficulty and cost. This design helps construction units and construction units to more easily accept and promote new technologies, and promotes the widespread application of step-shaped axil slabs in actual projects.

[0064] To sum up, the stepped axil structure proposed in this patent significantly reduces the construction difficulty and cost, improves the construction efficiency and structural performance, and provides a more economical, reasonable and practical solution for the basement roof structure through optimized design and standardized construction process.

Claims

1. A basement roof with a stepped axil structure, characterized in that: A step-shaped arm (5) is used at the plate support, wherein the step-shaped arm (5) comprises at least one horizontal step (6), so that the plate support is gradually thickened in the vertical direction, and the edges of the steps (6) are all 90-degree right angles.

2. The basement roof with stepped axil structure according to claim 1 is characterized in that: The steps (6) of the step-shaped abutment (5) have the same height.

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