Key technologies for controlling crack in box culverts of urban long underground channels and waterproofing of roof under shallow soil
Long box culverts are cracked and waterproof, improving durability, saving resources, and ensuring infrastructure safety.
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Key innovations
This technology significantly improves the durability of ultra-long box culverts, reduces maintenance costs, effectively saves resources, and supports green and sustainable infrastructure construction by inducing joints to control cracks and highly reliable waterproof design.
Potential economic benefits
Extend structural life, reduce maintenance costs and resource consumption, provide cost-effective crack control and waterproofing solutions, and promote social resource conservation.
Potential climate benefits
This technology significantly improves structural durability and service life by optimizing crack control and highly reliable waterproofing of ultra-long box culverts. Extended life can significantly reduce the need for future reconstruction or large-scale maintenance, thereby saving the production of high-carbon emission building materials (such as cement and steel).
Solution supplier
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Shanghai Municipal Engineering Design Research
Shanghai Municipal Engineering Design and Research Institute: A comprehensive service provider for urban municipal infrastructure construction, providing full-process solutions for planning, design and research.
Shanghai，China
Solution details
- Main research contents of academic fields and topics
The project work is planned to take the box culvert structure of urban long road as the background, starting from the restrained deformation test of reinforced concrete, combined with the monitoring data of the concrete and surrounding environment during the construction and service periods of shallowly buried underground structures in Shanghai soft soil areas, and taking the mechanism of inducing joints, structural crack control design, and high-reliability roof waterproofing design as the main research goals, systematic research on crack control design of underground ultra-long box road structures and high-reliability waterproofing technology of roof under shallowly covered soil is carried out, with a view to obtaining reasonable, economical, Promotable crack control solutions and highly reliable roof waterproofing technology are of great scientific significance for improving the durability of box culverts on urban long roads, and are of great value for ensuring my country's infrastructure construction and promoting a conservation-oriented society.
Based on the topic, theoretical analysis, physical testing, and new technology development and application, the development of early cracks in long tunnels has been effectively controlled, the normal use of the East-West Channel and Hongmei South Road Channel has been ensured, and the economy has been effectively saved.
It has achieved good social and economic benefits. - Main technological innovation contents
(1) Consider the test of the mechanical properties and deformation properties of the concrete under the constraint conditions of the retaining system on the ultra-long box culvert structure, and measure the constraint deformation and constraint stress.
(2) In-depth study of the mechanism of induction joints and design structural induction joints that can be quantitatively analyzed.
(3) Research on the crack development characteristics of shallow soil-covered box culverts under temperature change and dry-wet cycles.
(4) Study the reliability of the waterproof structure of the roof of the shallow-covered structure under temperature changes, dry-wet cycles and road impact loads, and carry out targeted waterproof design. - Intellectual property rights and application promotion
(1) Apply for one invention patent and one computer software copyright: one patent applied for-concrete restraint shrinkage experimental device; one computer software copyright applied for-early age performance calculation and analysis software V1.0.
(2) Compile a technical guide, namely "Guidelines for the Design and Construction of Crack Resistance, Waterproofing and Durability of Long Underground Road Box Culvert Structures."
(3) He has published 8 papers (4 of which were included in EI) and 6 degree papers (2 doctoral papers and 4 master's papers).
(4) The research and development technology of the subject has been actually promoted and applied in the East-West Corridor of Shanghai City (Pudong Section) and the Hongmei South Road-Jinhai Road Corridor (Crossing River Section), and good engineering benefits have been achieved.
Last updated
01:01:04, Nov 08, 2025
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