A construction method of pre-soaked water dynamic compaction method for engineering foundation

Abstract

The invention provides a construction method of a pre-impregnated water dynamic compaction method for engineering foundations, comprising the following steps: step 1, determining the construction scope, and measuring the thickness of the sand filling; step 2, determining the location of the construction scope for laying a plastic drainage board and quantity, and determine the depth of the plastic drainage board; Step 3, lay out the plastic drainage board, and vibrate and drain the sand-filled foundation through a conventional vibrator; Spray water with a preset amount of water within the construction scope of the sand-filled foundation to maintain the preset moisture content, and then perform dynamic compaction through the pre-impregnated water compactor equipment. Spray on the ramming point at a fixed point to ensure no dust; Step 5, check the bearing capacity and liquefaction resistance of the foundation. The invention effectively solves the problems that the surface layer of the existing blowing and filling sand foundation is difficult to be compacted during the treatment process, which affects the construction quality of dynamic compaction and subsequent vibratory rolling, and pollutes the environment.

Description

technical field [0001] The invention relates to the technical field of engineering foundations, in particular to a construction method of engineering foundations by a pre-soaked water dynamic compaction method. Background technique [0002] At present, the fourth phase of the Suzhou Port Taicang Port Area project is located on the right bank of the Baimaosha South Waterway in the lower reaches of the Yangtze River from Lang Port to Qiya Port in the Floating Bridge Operation Area of ​​the Suzhou Port Taicang Port Area, adjacent to berths 13 and 14 of the upstream third phase project. It is planned to build four 50,000-ton container berths (the hydraulic structure is designed according to the berth of a 100,000-ton container ship) and related supporting facilities, with a designed annual passing capacity of 2 million TEUs. [0003] The rear land area is made of dredged sand on the Changjiang beach, and the large area of ​​exposed topsoil in the site is made of finer grained dr...

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Problems solved by technology

[0004] In view of this, the present invention proposes a construction method of engineering foundation pre-soaked dynamic compaction method, which aims to solve the problem that the surface layer of the existing dredged sand foundation is difficult to compact during the treatment process, which affects the construction quality of dynamic compaction and subsequent vibratory rolling. After construction disturbance, it is easy to raise dust and cause environmental pollution

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