A New Treatment Method for Tidal Flat Silt Subgrade
A technology for silt subgrades and tidal flats, applied in soil protection, infrastructure engineering, construction, etc., can solve problems such as acceleration, and achieve the effects of accelerating soil consolidation, eliminating post-construction settlement, and reducing consumption
Active Publication Date: 2017-09-05
WENZHOU UNIV
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Problems solved by technology
[0006] The present invention attaches great importance to the problems of mechanical transportation and material consumption, so the first stage adopts the anti-clogging airtight vacuum preloading foundation treatment method to effectively solve the problems of mechanical entry and construction platforms in the later stage, and the drainage board adopts anti-clogging Silting the drainage board, the loss of the vacuum degree along the way is very small, so that the vacuum degree is directly transmitted to the interior of the deep soil, improving the utilization efficiency of the vacuum pressure, accelerating the consolidation of the soil, and thus improving the effect of soil reinforcement
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[0018] The present invention is based on the premise that the mud flat soft clay foundation is directly used as roadbed after being treated.
[0019] 1. The anti-clogging closed vacuum preloading method is used for the first-stage reinforcement treatment of the soft soil site.
[0020] 1) According to the geotechnical engineering survey report, determine the geological conditions and foundation treatment plan.
[0021] 2) Level the mud flat soft clay foundation with a smoothness of 5‰.
[0022] 3) According to the design specifications for the width of motor vehicle lanes on urban roads, the lane width of the main road mainly for freight traffic should be 3.5m, so the design width of the two-lane roadbed is 7m, and the width of the reserved area on both sides is 1m~ 3m. The width of the reserved area on both sides is used for film sealing, burying pipelines, cables and building temporary engineering facilities.
[0023] 4) Laying a layer of geotechnical woven fabric 7 on a ...
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The invention relates to a novel treatment method for tidal mud roadbed. The anti-clogging closed vacuum preloading foundation treatment method in the early stage of this method effectively solves the problems of mechanical access and construction platforms in the later stage, and the anti-silting closed compound vacuum combined with surcharge preloading foundation treatment method in the later stage is efficiently and quickly strengthened Compared with the surcharge preloading method, it can complete the foundation reinforcement in a shorter construction period, avoid post-construction settlement, and achieve the expected design elevation of the subgrade without unloading. On the ground, the short, flat and fast ground treatment is realized.
Description
technical field [0001] The invention relates to a foundation treatment technology, which is mainly applicable to soft clay foundations deposited in marine, lacustrine and river facies, and belongs to the technical field of geotechnical engineering. Background technique [0002] In order to speed up the pace of development of my country's coastal industrial belt, stretch the urban spatial development pattern, alleviate the pressure brought by population, resources and environment, and provide strategic support for sustainable development, it is necessary to vigorously utilize tidal flat resources for development and construction. Deep tidal muddy soft clay is widely distributed in coastal areas of my country and accumulated in layers. Because this kind of soft clay has low permeability, high water content, low shear strength, high compressibility, weak bearing capacity, strong thixotropy and poor structure And many unfavorable engineering characteristics, large construction ar...
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IPC IPC(8): E02D3/10
CPCE02D3/10
Inventor 王军蔡袁强符洪涛王鹏谷川孙林柱金亚伟丁光亚胡秀青
Owner WENZHOU UNIV