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A platform for research: civil engineering, architecture and urbanism
Preparation method of core material solidified soil composite pile for low-permeability soil
The invention discloses a preparation method of a core material solidified soil composite pile for low-permeability soil, which specifically comprises the following steps: S1, preparing a water absorption curing agent: the curing agent comprises the following raw materials: anhydrous lime powder, water absorption gypsum powder, active aluminum-containing material powder and active material powder, the water absorption rate of the curing agent is 10-45%, and the expansion-solid ratio is 5-70%; s2, in-situ mixing the curing agent prepared in the step S1 with soil at a pile to be manufactured in a dry powder form to obtain a cured soil pile, and standing for a proper time to reduce the moisture content of the cured soil; and S3, after standing is finished, the core material is inserted into the solidified soil pile, and the core material composite pile for the low-permeability soil is obtained. In the composite pile, the extrusion force generated by inserting the core material causes the pore water pressure to be greatly reduced, so that a water film generated on the interface of the core material and the solidified soil is thinned; meanwhile, the non-water-saturated solidified soil is extruded and compacted by the extrusion force generated by insertion of the core material, so that the strength of the solidified soil is improved; the two effects can improve the bearing capacity of the composite pile.
本发明公开了一种用于低渗透性土的芯材固化土复合桩的制备方法，具体包括如下步骤：S1、制备吸水固化剂：固化剂的原料包括无水石灰粉、吸水石膏粉、含活性铝材料粉和活性材料粉，固化剂吸水率为10‑45％，胀固比为5‑70％；S2、将步骤S1制得的固化剂以干粉形式与拟制桩处的泥土原位拌合得到固化土桩并静置适当时间使固化土的含水率降低；S3、静置结束后将芯材插入固化土桩中，即得到用于低渗透性土的芯材复合桩。本发明复合桩中，芯材插入产生的挤压力引发孔隙水压力大幅度降低，使在芯材和固化土界面产生的水膜减薄；同时，芯材插入产生的挤压力使得非水饱和固化土得到挤压密实，进而使固化土强度提高；这两项作用可提高复合桩承载力。
Preparation method of core material solidified soil composite pile for low-permeability soil
The invention discloses a preparation method of a core material solidified soil composite pile for low-permeability soil, which specifically comprises the following steps: S1, preparing a water absorption curing agent: the curing agent comprises the following raw materials: anhydrous lime powder, water absorption gypsum powder, active aluminum-containing material powder and active material powder, the water absorption rate of the curing agent is 10-45%, and the expansion-solid ratio is 5-70%; s2, in-situ mixing the curing agent prepared in the step S1 with soil at a pile to be manufactured in a dry powder form to obtain a cured soil pile, and standing for a proper time to reduce the moisture content of the cured soil; and S3, after standing is finished, the core material is inserted into the solidified soil pile, and the core material composite pile for the low-permeability soil is obtained. In the composite pile, the extrusion force generated by inserting the core material causes the pore water pressure to be greatly reduced, so that a water film generated on the interface of the core material and the solidified soil is thinned; meanwhile, the non-water-saturated solidified soil is extruded and compacted by the extrusion force generated by insertion of the core material, so that the strength of the solidified soil is improved; the two effects can improve the bearing capacity of the composite pile.
本发明公开了一种用于低渗透性土的芯材固化土复合桩的制备方法，具体包括如下步骤：S1、制备吸水固化剂：固化剂的原料包括无水石灰粉、吸水石膏粉、含活性铝材料粉和活性材料粉，固化剂吸水率为10‑45％，胀固比为5‑70％；S2、将步骤S1制得的固化剂以干粉形式与拟制桩处的泥土原位拌合得到固化土桩并静置适当时间使固化土的含水率降低；S3、静置结束后将芯材插入固化土桩中，即得到用于低渗透性土的芯材复合桩。本发明复合桩中，芯材插入产生的挤压力引发孔隙水压力大幅度降低，使在芯材和固化土界面产生的水膜减薄；同时，芯材插入产生的挤压力使得非水饱和固化土得到挤压密实，进而使固化土强度提高；这两项作用可提高复合桩承载力。
Preparation method of core material solidified soil composite pile for low-permeability soil
一种用于低渗透性土的芯材固化土复合桩的制备方法
HUANG XIN (author) / LIU ZHONG (author) / LIU XIXU (author) / LIU XIAOKANG (author) / ZHANG CHUFU (author)
2024-04-12
Patent
Electronic Resource
Chinese
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