The foundation encyclopedia-QiangJin Foundation-第26页

The foundation encyclopedia

: 31 Mar

Introduction to the technology of ready-mixed fluidized solidified soil

The ready-mixed fluidized solidified soil is a mixture of various discarded ballast soil, soil hardener and water at a certain ratio and reaches a certain performance index. Its slump is 80mm ~ 220mm and its unconfined compressive strength reaches &NBSP. 0.4 ~ 15 mpa.
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: 30 Mar

Soil-cement gravity wall support structure

Cement-soil deep mixing method is through the special machinery - all kinds of deep mixer, along the depth of the curing agent (cement slurry or cement powder, plus a certain mixing agent) and the foundation soil forced in situ mixing to form cement-soil pile or cement soil block reinforcement foundation method.
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: 29 Mar

Introduction of drilling pile technology and preparation for construction

A, characteristics of bored piles, the construction technological process of three 1, construction technology, construction preparation, ready to play before, construction units should be reconnaissance construction site, familiar with engineering drawings (pile layout, structure design of pile, reinforcing cage production drawings, etc.), geotechnical engineering investigation data and the necessary hydrogeological data, the necessary research.
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: 28 Mar

Introduction and quality inspection standard of undisturbed earth taking and pressurized concrete pile with full protective cylinder

The construction of undisturbed soil taking concrete cast-in-place pile with full protective simplicity adopts dual-power drill with built-in spiral blades to drill down and cut the soil to form the pile diameter. At the same time, the undisturbed soil in the protective simplicity is removed, and the concrete is inserted into the steel cage after being pressed and the protective simplicity is removed to form reinforced concrete piles. It can also use the pipe rolling machine to rotate and press the steel casing (guard cylinder), grab and other equipment to take out the hole forming technology of the soil inside the guard, install the steel cage after the hole forming, and fill the concrete of the pile body. It is suitable for clay soil layer, silt soil, sandy soil and high groundwater level, high confined water formation.
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: 27 Mar

Anchor test

The main purpose of soil bolt test is to determine the pull-out ability of anchor solid in soil, so as to verify the rationality of soil bolt design and construction technology, or to check the quality of soil bolt. There are two kinds of soil bolt test: basic test and acceptance test. Creep test should also be carried out on the wrong rod in soft soil.
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: 24 Mar

The internal support system of the supporting structure - vertical diagonal support system

In general, the plane support system should be limited, and the vertical diagonal support system can also be used for the foundation pit meeting the following conditions. The vertical diagonal support system is usually composed of diagonal support, waist beam and diagonal support foundation components. When the diagonal support length is greater than & NBSP; At 15m, the column should be set in the middle of the diagonal support.
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: 22 Mar

Inner support system of support structure - plane support system

Generally speaking, the plane support system should be composed of three parts: waist beam, horizontal support and column. The horizontal support should have strong integrity and plane stiffness, so that the force transmission of each part of the support is reliable and consistent.
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: 21 Mar

Foundation pit earthwork excavation

Before foundation pit earthwork excavation, the earthwork excavation construction plan should be compiled and measured according to the requirements of foundation pit design for each construction stage. The main contents of the earthwork excavation construction scheme, Generally including engineering general situation and characteristics, the geological exploration data, the surrounding environment, foundation pit supporting design, construction layout, and based on the traffic organization, working condition of earth-moving machinery selection, digging, digging method, draining measures, seasonal construction measures, supporting deformation control and environmental protection measures, monitoring scheme and safety technical measures and emergency plan, etc., The construction plan shall go through the examination and approval procedures in accordance with relevant regulations.
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: 20 Mar

Classification and application of grouting reinforcement technology

Grouting reinforcement technology can be divided into the following categories according to the mechanism, the application of grouting reinforcement technology
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: 19 Mar

Investigation and environmental investigation of foundation pit engineering

Compared with the investigation of buildings, the investigation of foundation engineering has its own characteristics. With the excavation of the earth inside and outside the foundation pit, the soil within a certain range will appear stratum movement. Therefore, there are specific requirements for the scope and depth of the investigation and the testing items of the Yashi index.
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Shanghai QiangJin Foundation Engineering Co., Ltd.

Tel:400-100-2850

Address:No. 289, Huixian Road, Jiading District, Shanghai

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