Temperature-controlled type axial force compensation method for concrete supports of deep foundation pit
A compensation method and concrete technology, which is applied in excavation, infrastructure engineering, construction, etc., can solve the problems of many installation nodes, poor overall rigidity of steel supports, self-heavyness, etc., and achieve high support reliability, improved flexibility, and simple construction Effect
Active Publication Date: 2016-10-12
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
Method used
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Embodiment
[0019] 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.
[0020] 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.
[0021] Each monitoring unit includes a temperature control system and a monitoring system. The temperature control system plays a role in changing the temp...
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The invention relates to the field of deep foundation pit construction in geotechnical engineering, in particular to a temperature-controlled type axial force compensation method for concrete supports of a deep foundation pit. The temperature-controlled type axial force compensation method is characterized in that the axial force of the concrete supports is compensated through changing the temperature of the concrete supports, and the temperature of the concrete supports is changed through heating or cooling the concrete supports. The temperature-controlled type axial force compensation method has the advantages that the problem that the concrete supports cannot apply axial force is solved, the deformation of enclosure structures at the ends of the supports can be monitored in real time, and the axial force of each support is adjusted according to the deformation of the enclosure at the end of each support; the flexibility of the concrete supports is improved, the displacement of the enclosure structures is effectively controlled, and the safety of surrounding buildings and pipelines is ensured; the reliability of the supports is high, construction is simple, and cost is low; and the method is suitable for foundation pit engineering with high environment protection class 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...
Claims
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Login to View More IPC IPC(8): E02D17/02E02D17/04E02D15/02
CPCE02D15/02E02D17/02E02D17/04
Inventor 尹骥魏建华俞海洲
Owner SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST