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Anonymous users2024-02-06Answer]: Advantages: 1) According to the shape of the foundation pit, different groove units can be divided, and round, square, strip and various special-shaped underground diaphragm wall support structures can be made.
2) There is no soil squeezing and vibration in construction, and the impact on the surrounding environment is small. Bu Lianghuai 3) can be applied to a variety of soil layers. 4) The construction of the underground diaphragm wall is a repetitive operation of the process program of the unit groove section, so it is easy for the operator to master.
5) It can be combined with reverse construction method construction to speed up the construction progress and shorten the construction period. 6) It has good support and anti-seepage performance.
Disadvantages: 1) The treatment of spoil and waste mud increases the cost of the project, and if the treatment is improper, it will cause pollution to the environment. 2) If it is only used as a supporting structure, the cost is higher.
3) The surface of the cast-in-situ underground diaphragm wall is not smooth enough. 4) The construction accuracy and anti-seepage performance of the joint of the wall section need to be further improved. Diaphragm walls are generally used in the following areas:
1) In the soft soil area, it is suitable for deep foundation pits with an excavation depth of more than 10m.
2) Deep foundation pit in dense areas of buildings and underground facilities and high requirements for surrounding environmental protection. 3) It is used for the combination of the supporting structure and the main structure in the construction of the reverse construction method.
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Anonymous users2024-02-05The diaphragm wall itself is a foundation pit support structure, and of course other foundation pit support is not needed.
The foundation pit support system of underground diaphragm wall is composed of ground connecting wall and support system, the wall plays the role of retaining soil, and the support system can be a concrete structure or a steel structure. During the construction of the ground connecting wall, it is generally equipped with a spraying pile or a mixing pile for interface water stopping, and the ground connecting wall is generally used in the construction of a deep and large foundation pit, and the precipitation operation will be carried out during the excavation of the foundation pit.
You can see, it's a deep foundation pit.
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Anonymous users2024-02-04The underground diaphragm wall itself is the foundation pit support structure, and the foundation pit support can be carried out without other methods by using the construction method support of the basement diaphragm wall. Supports should be set up according to the specific conditions of the site.
The underground diaphragm wall foundation pit support system is composed of an underground diaphragm wall and a support system, the underground diaphragm wall plays a role in retaining soil, and the support system can be a concrete structure or a steel structure. During the construction of the underground diaphragm wall, it is generally equipped with a spraying pile or a stirring pile for interface water stopping, and the underground diaphragm wall is generally used in the construction of a deep and large foundation pit, and the foundation pit dewatering operation is also carried out when the foundation pit is excavated.
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Anonymous users2024-02-031. The underground diaphragm wall is only used as a form of foundation pit support, and the underground diaphragm wall is supported by steel support or reinforced concrete, and in general design and construction, the ground diaphragm wall on both sides of the foundation pit will be supported in the form of a buttle. There is a new process that does not use steel support, and uses counter-pressed soil to form a support effect on the ground wall on the inner side of the ground wall. If the above two support methods are not adopted, the ground wall is easy to fracture and leak, or the deformation is too large, which poses a safety threat to the entire foundation pit.
2. In addition to the underground diaphragm wall, depending on the surrounding environment of the foundation pit, if there are tall buildings or buildings or structures that are sensitive to foundation settlement, it may also be necessary to take foundation reinforcement measures such as rotary grouting piles and mixing piles to support the foundation pit, which belongs to the category of foundation pit support.
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Anonymous users2024-02-02The underground diaphragm wall is an enclosure structure, and the support is generally in the form of steel support or concrete support. These are two concepts!
Many people may not put the basement.
The construction of the construction is a serious matter, but in fact, in our lives, the first is the parking lot, and the second is that many supermarkets are built in the basement of the negative first floor. Therefore, the waterproofing project of the basement is very important. The basement is also a place where water seepage and leakage can occur, so extra attention should be paid during construction. >>>More
1. Calculation method:
There are two kinds of underground diaphragm wall reinforcement cages, one is a double-groove reinforcement cage with steel plates at both ends, and the other is a slotted reinforcement cage. Directly calculate the length of the steel bar, the length, width and thickness of the steel plate. Then multiply by the theoretical weight. >>>More
There is no problem if it can be done in accordance with the relevant national norms, the question is if it can be done, who can do it in practice!
Of course, this is not considered as a floor areaPooled area >>>More
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