Split Bamboo Soil Nails and Its Construction Method

Abstract

The invention relates to a split bamboo material soil nail. The inclined and downward split bamboo material soil nail is inserted into a foundation pit side wall soil layer, the lower parts of at least two split bamboo strips are fixed with a middle bamboo tube at a certain space, lower through holes are perforated at the upper bamboo joints of the split bamboo strips, bamboo fixing pins are inserted into the lower through holes, two vertical locking bamboo strips are bound under the locking bamboo pins, cement mortar or cement slurry is filled in soil layer drill holes, protection slope concrete is divided into two layers, a bamboo strip net piece and a reinforced bamboo strip are placed on the first layer protection slope concrete, and the locking bamboo pins and the vertical locking bamboo strips are buried in the second layer protection slope concrete. When the bottom of a foundation pit is a soft and weak soil layer, downward bamboo pipe piles can be beaten into the soil layer, the middle bamboo joints of the bamboo pipe piles can be in a penetrated way and is filled with concrete for enhancing the rigidity. The split bamboo material soil nail has the advantages that the structure is unique, the construction method is simple, various cheap, environmental-protection and natural bamboo materials can be used for replacing steel bars to be used as a body structure of the deepfoundation pit soil nail wall protection, the construction safety of the foundation pit is ensured, and the construction cost is reduced.

Description

Technical field: [0001] The invention belongs to the technical field of civil engineering, and more specifically relates to a main structure and a construction method using a soil nail wall of split bamboo as the side wall enclosure of a foundation pit. Background technique: [0002] With the acceleration of urbanization, modern buildings need to make full use of underground space, and it is imperative to excavate deep foundation pits scientifically, safely and economically. Deep foundation pit support is a necessary step in excavating the foundation pit. As a temporary structure, it must be safe and reliable to achieve the most economical, environmentally friendly and energy-saving goals. Existing soil nail walls are made of steel pipe soil nails or reinforced soil nails combined with steel mesh surface layer, cement mixing piles or wooden piles to make composite soil nails and advanced support walls. After the foundation pit completes its mission, a large number of steel b...

AI Technical Summary

Problems solved by technology

Existing soil nail walls are made of steel pipe soil nails or reinforced soil nails combined with steel mesh surface layer, cement mixing piles or wooden piles to make composite soil nails and advanced support walls. After the foundation pit completes its mission, a large number of steel bars are buried in the ground Unable to recycle, it will have a permanent impact on the soil layer and cause a lot of waste, which is contrary to the environmental protection and energy-saving buildings advocated by the state

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