Heze Huawang Pressure Vessel Co., Ltd

In the design of the liquid oxygen, nitrogen, argon storage tank, due to the conduction of the low-temperature medium in the tank, the foundation soil is very easy to freeze up and uplift the soil, which will cause foundation damage. Therefore, in order to eliminate this unfavorable factor, in addition to the tank In addition to the insulation measures provided between the bottom plate and the surface of the foundation bottom plate, anti-freezing measures must also be taken for the tank foundation. There are two common methods. One is to use electric or other heating systems in the foundation bottom plate to make a circulating heating system. Raft type foundation, the other is to use the foundation floor to be raised, and the foundation floor is separated from the foundation soil by the air layer formed by the overhead. The former is generally not used frequently due to the higher cost of the heating system. In most cryogenic tanks imported and constructed in China, the form of overhead raft foundation is generally adopted. The net height of the overhead layer is generally determined based on the process piping and equipment layout requirements, but also needs to be determined after a certain temperature conduction calculation based on the temperature of the storage medium in the tank. The overhead raft foundation can be divided into two forms: single raft (cap) and double raft (cap) overhead. In the case of good geological conditions, the double raft foundation can generally be adopted; but due to low temperature storage Tanks have relatively high requirements for foundation settlement. In most cases, especially on soft soil foundations with poor geological conditions, single raft (cap) pile foundations are often used, and sometimes double rafts (caps) are used. ) Pile foundation.

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