Temperature-controlled Axial Force Compensation Method for Concrete Support in Deep Foundation Pit
A compensation method and concrete technology, applied in excavation, infrastructure engineering, construction, etc., can solve the problems of many installation nodes, poor overall rigidity of steel support, and heavy self-weight, etc., to achieve high support reliability, improve flexibility, and ensure safety. Effect
Active Publication Date: 2018-09-18
SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
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Problems solved by technology
[0003] In coastal soft soil areas, internal support is often used for deep and large foundation pits. Horizontal internal supports in deep foundation pit engineering mainly include reinforced concrete supports and steel supports. Rapidly, and real-time prestressing technology has been realized, but the overall rigidity of the steel support is poor, and there are many installation nodes. When the node structure is unreasonable or the construction is improper, it is easy to cause large deformation and even cause accidents
The cast-in-place concrete support has the advantages of large overall rigidity, firm joint connection, strong adaptability, and high reliability. big weakness of brace
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Embodiment
[0024] Embodiment: In this embodiment, the temperature-controlled axial force compensation method for deep foundation pit concrete supports can be realized through a system, and the concrete supports in this embodiment are reinforced concrete supports.
[0025] Such as figure 1 As shown, the system includes a monitoring terminal and several monitoring units. Each monitoring unit is relatively independent. The number of monitoring units corresponds to the number of reinforced concrete supports. Each monitoring unit is responsible for monitoring the corresponding reinforced concrete support for monitoring. The monitoring terminal is used to connect and control the temperature control system in each monitoring unit, and at the same time connect to receive the monitoring data of the monitoring system in each monitoring unit.
[0026] Each monitoring unit includes a temperature control system and a monitoring system, wherein the temperature control system plays a role in heating t...
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The invention relates to the field of deep foundation pit construction in geotechnical engineering, in particular to a temperature control type axial force compensation method for concrete supports of deep foundation pits. The temperature control type axial force compensation method is characterized in that the concrete supports are heated for changing the temperature of the concrete supports so that the axial force of the concrete supports can be compensated for. The temperature control type axial force compensation method has the advantages that the problem that the concrete supports cannot exert axial force is solved, deformation of building envelopes of supporting ends can be monitored in real time, the axial force of each support can be adjusted according to the deformation of the building envelope of each supporting end, the flexibility of the concrete supports is improved, displacement of the building envelopes is effectively controlled, the safety of surrounding structures and pipelines is guaranteed, the supporting reliability is high, construction is simple and convenient and the manufacturing cost is low, thereby being suitable for foundation pit projects with high environmental protection level requirements.
Description
technical field [0001] The invention relates to the field of deep foundation pit construction in geotechnical engineering, in particular to a temperature-controlled axial force compensation method for concrete supports of deep foundation pits. Background technique [0002] With the continuous deepening of urbanization and the growth of population, today's urban space is scarce, the development and utilization of underground space has become a major trend to solve urban space problems, and foundation pits are gradually developing in a deep and general direction, and the surrounding environmental protection requirements are also increasing. How to ensure the safety of the foundation pit itself and reduce the impact on the surrounding existing structures and pipelines when developing underground space has always been an important problem to be solved in the process of underground space development. [0003] In coastal soft soil areas, internal support is often used for deep and...
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IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 尹骥魏建华俞海洲
Owner SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST