Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-pressure jet grouting pile body pile-forming strength prediction method based on construction site slurry return test
The invention discloses a high-pressure jet grouting pile body pile-forming strength prediction method based on a construction site return slurry test, which comprises the following steps of: carrying out configuration and strength test on different cement mixing amount strength test blocks, and drawing a relation curve of age strength and cement mixing amount; obtaining a return slurry EDTA titration standard curve under different cement mixing amounts through a test; cement soil slurry returning sampling is carried out at a slurry returning opening of the high-pressure jet grouting pile, and the corresponding cement mass m1 in the quantitative cement soil slurry returning sample is determined; carrying out site construction guniting flow Q and slurry return flow monitoring V2; obtaining the density of the cement soil return slurry sample; the mass m2 of the dried cement soil returned slurry sample is obtained; solving the mass M6 of cement in the pile body; the cement mixing amount in the pile body is calculated, the unconfined compressive strength of the pile body at the age is predicted, and whether design requirements are met or not is judged; through the age standard curve of the strength of the test block under different cement mixing amounts, accurate prediction of the age strength of the pile body is realized, and the method has important practical significance for predicting the construction quality of the high-pressure jet grouting pile.
本发明公开了一种基于施工现场返浆测试的高压旋喷桩桩身成桩强度预测方法，包括:进行不同水泥掺量强度试块配置与强度测试，绘制龄期强度与水泥掺量关系曲线；通过试验得到不同水泥掺量下的返浆EDTA滴定标准曲线；在高压旋喷桩返浆口进行水泥土返浆取样，确定定量水泥土返浆样品中对应水泥质量m1；进行现场施工喷浆流量Q和返浆流量监测V2；得到水泥土返浆样品密度；得到烘干后的水泥土返浆样品质量m2；求取桩身中的水泥质量M6；计算桩体中水泥掺量，预测桩身龄期无侧限抗压强度，判定是否满足设计要求；通过不同水泥掺量下的试块强度的龄期标准曲线，实现对桩身龄期强度的精准预测，对于预测高压旋喷桩施工质量具有重要的现实意义。
High-pressure jet grouting pile body pile-forming strength prediction method based on construction site slurry return test
The invention discloses a high-pressure jet grouting pile body pile-forming strength prediction method based on a construction site return slurry test, which comprises the following steps of: carrying out configuration and strength test on different cement mixing amount strength test blocks, and drawing a relation curve of age strength and cement mixing amount; obtaining a return slurry EDTA titration standard curve under different cement mixing amounts through a test; cement soil slurry returning sampling is carried out at a slurry returning opening of the high-pressure jet grouting pile, and the corresponding cement mass m1 in the quantitative cement soil slurry returning sample is determined; carrying out site construction guniting flow Q and slurry return flow monitoring V2; obtaining the density of the cement soil return slurry sample; the mass m2 of the dried cement soil returned slurry sample is obtained; solving the mass M6 of cement in the pile body; the cement mixing amount in the pile body is calculated, the unconfined compressive strength of the pile body at the age is predicted, and whether design requirements are met or not is judged; through the age standard curve of the strength of the test block under different cement mixing amounts, accurate prediction of the age strength of the pile body is realized, and the method has important practical significance for predicting the construction quality of the high-pressure jet grouting pile.
本发明公开了一种基于施工现场返浆测试的高压旋喷桩桩身成桩强度预测方法，包括:进行不同水泥掺量强度试块配置与强度测试，绘制龄期强度与水泥掺量关系曲线；通过试验得到不同水泥掺量下的返浆EDTA滴定标准曲线；在高压旋喷桩返浆口进行水泥土返浆取样，确定定量水泥土返浆样品中对应水泥质量m1；进行现场施工喷浆流量Q和返浆流量监测V2；得到水泥土返浆样品密度；得到烘干后的水泥土返浆样品质量m2；求取桩身中的水泥质量M6；计算桩体中水泥掺量，预测桩身龄期无侧限抗压强度，判定是否满足设计要求；通过不同水泥掺量下的试块强度的龄期标准曲线，实现对桩身龄期强度的精准预测，对于预测高压旋喷桩施工质量具有重要的现实意义。
High-pressure jet grouting pile body pile-forming strength prediction method based on construction site slurry return test
一种基于施工现场返浆测试的高压旋喷桩桩身成桩强度预测方法
WANG RENGUI (Autor:in) / LI HONGTAO (Autor:in) / WEI LEYONG (Autor:in) / HAN DONGDONG (Autor:in) / DAI JUNPING (Autor:in) / LI YANDE (Autor:in) / LIANG ZHENYOU (Autor:in) / FU BAIYONG (Autor:in) / GUO CHAO (Autor:in) / XU JIE (Autor:in)
08.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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