Precise deviation-rectifying method of large tank ring wall foundation
A technology for large-scale storage tanks and foundations, which is applied in the field of precise deviation correction of the ring wall foundation of large-scale storage tanks. It can solve the problems of difficult control of excavated soil volume and settlement rate, difficult foundation stability, etc., and achieves easy operation, high deviation correction accuracy and controllability Good results
Inactive Publication Date: 2015-08-05
WATER RESOURCES RES INST OF SHANDONG PROVINCE
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Problems solved by technology
The current rectification of storage tanks is generally the forced landing method of excavating soil. There are problems such as difficulty in controlling the amount of excavated soil and settlement rate, and the stability of the foundation after rectification. Therefore, it is necessary to explore a new rectification method to make up for the shortcomings of the current method. insufficient
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[0013] The present invention will be specifically described below in conjunction with the accompanying drawings and embodiments.
[0014] figure 1 Shown is a schematic cross-sectional view of the equal-height support of the present invention.
[0015] figure 2 Shown is a schematic plan view of the equal-height support of the present invention.
[0016] The innovation of the present invention is to excavate several foundation grooves under the foundation of the ring wall of the storage tank. The width and quantity of the foundation grooves need to be determined according to the safe shear strength calculation of the foundation concrete ring wall, and prefabricated concrete piles are first driven into the foundation grooves. , welded steel bars at the head of the prefabricated pile and poured reinforced concrete corbels to form a bearing support, the elevation of the top of the support and the elevation of the lowest point of the ring wall foundation are the same elevation, t...
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The invention discloses a precise deviation-rectifying method of a large tank ring wall foundation. The method comprises the following steps: (1) a reference concrete bracket is cast in a low point of a foundation concrete ring wall; and then, brackets are symmetrically cast at one side of a high point of the foundation concrete ring wall with the high point as reference to two sides of the foundation concrete ring wall in a 2 / 3 periphery range of the foundation concrete ring wall to form equal-height brackets having the uniform elevations with a top and the reference concrete bracket; (2) after the equal-height brackets are finished, the soil digging is performed from the periphery of the foundation concrete ring wall at one side of the high point of the foundation concrete ring wall; the circular soil digging is performed while settling until the foundation concrete ring wall totally drops on the equal-height brackets to finish the rectification; and (3) the ring wall foundation subsoil is refilled for grouting and reinforcing the periphery of the foundation concrete ring wall. The equal-height brackets are arranged on the foundation concrete ring wall, and then, the soil digging is performed in the lower range of the foundation, so that the ring wall foundation is slowly settled on the equal-height brackets; and the method has the advantages of good controllability, easy operation, high rectifying precision, safety and reliability.
Description
technical field [0001] The invention relates to a method for accurately rectifying the deviation of a ring wall foundation of a large storage tank, and belongs to the technical fields of rectifying the deviation of the chemical industry, petroleum, water conservancy, and building foundations. Background technique [0002] Large vertical storage tanks are generally larger than 60m in diameter and 17m-20m in height, and the tank wall is vertically located on the ring wall foundation. During the long-term operation of the storage tank, the foundation is affected by subsidence, load, and groundwater level changes. The foundation soil will have uneven settlement, and the tank will tilt. How to maintain the level of the ring wall foundation is the key to the operation of the tank. The current rectification of storage tanks is generally the forced landing method of excavating soil. There are problems such as difficulty in controlling the amount of excavated soil and settlement rate...
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Login to View More IPC IPC(8): E02D35/00E02D27/38
Inventor 赵兴品郭磊张琨孙俊华王晓莉王众关志伟
Owner WATER RESOURCES RES INST OF SHANDONG PROVINCE