T/SCQA 425-2023 Active Group standards

T/SCQA 425-2023 Construction project foundation pit construction steel stack bridge plate application technical standard

Publish Date: 2023-12-01 Implement Date: 2023-12-30 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/SCQA 425-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Iron and steel products

ICS Name: The comprehensive construction industry

Publish Date: 2023-12-01

Implement Date: 2023-12-30

Scope

Main technical content: In order to standardize the application technology of steel stack bridge boards in the construction of foundation pits, improve design level, ensure the safety of construction, and give full play to its advantages of factory-made production, rapid assembly and disassembly, high-efficiency construction, and recycling, so as to achieve advanced technology, reliable quality, safe application, resource conservation, and environmental protection, this document is formulated. This document is applicable to the design, production, product acceptance, paving construction, and recycling of steel stack bridge boards in the construction of foundation pits. It can also be referenced for the use in opening cover plates, road excavation, temporary road paving, and bridge erection. The steel stack bridge board is composed of a steel upper and lower panel and steel ribs arranged vertically and horizontally, which are welded and dovetailed to form a honeycomb-shaped bridge deck structure. It mainly bears the upper load and transfers the load to the lower structure. 5.1.1 The steel stack bridge board shall adopt the limit state design method based on probability theory and be designed according to the design expression of partial coefficients. 5.1.6 When designing the steel stack bridge board, appropriate materials and structural measures shall be selected to meet the requirements of strength, stability, and stiffness during transportation, installation, and use, and shall comply with fire prevention and corrosion protection requirements. Standardized components shall be preferred. The structure of the steel stack bridge board shall be easy to fabricate, transport, install, and maintain, and the components of each part shall be subject to simple and clear stress distribution to reduce stress concentration and avoid three-dimensional tensile stress of materials. 5.1.7 The design documents of the steel stack bridge board shall indicate the minimum design