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(1 四川省川建勘察設(shè)計(jì)院有限公司, 成都 610095; 2 四川省建筑設(shè)計(jì)研究院有限公司,成都 610095; 3 四川省建筑設(shè)計(jì)研究院有限公司復(fù)雜結(jié)構(gòu)設(shè)計(jì)研究中心, 成都 610095;4 建華建材 (四川) 有限公司, 廣漢 618300)

摘要: 簡(jiǎn)要概述了加筋水泥土支護(hù)結(jié)構(gòu)的研究現(xiàn)狀及不足,結(jié)合碎石類(lèi)土場(chǎng)地中加筋水泥土樁的成樁工藝,基于土壓力拱理論,提出了非咬合的分散式加筋高壓旋噴樁布置方式. 介紹了加筋高壓旋噴墻錨復(fù)合支擋體系的結(jié)構(gòu)形式、組成構(gòu)件和構(gòu)件的設(shè)置方式,闡述了該支擋體系設(shè)計(jì)計(jì)算的基本假定,建立了該支擋體系的力學(xué)模型;提出了基于等剛度原則的分散布樁墻體與實(shí)心墻體的轉(zhuǎn)換方法. 基于靜力平衡原理,提出了懸臂墻+樁錨力學(xué)模型的抗傾覆、抗滑移整體穩(wěn)定性分析方法;在基本假定的基礎(chǔ)上,提出了墻體內(nèi)力轉(zhuǎn)化為樁軸力的方法,并給出了強(qiáng)度驗(yàn)算的方法. 最后,通過(guò)重慶市某深基坑的項(xiàng)目應(yīng)用,驗(yàn)證了加筋高壓旋噴墻錨復(fù)合支擋體系及其計(jì)算方法的可行性.

關(guān)鍵詞: 加筋旋噴; 高壓旋噴; 水泥土墻; 懸臂墻; 樁錨; 等剛度代換; 支擋體系

中圖分類(lèi)號(hào):TU46+3 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2023)07-0130-07

DOI:10. 19701 / j. jzjg. SADI2320

Study on design method of reinforced high-pressure jet grouting anchorage wall compound retaining system

HUANG Xiangchun1,2, ZHAO Shixing2,3, LUO Yongzhong1,2, YU Debin1,2,XU Xing4, TAN Xiaogang4, YUAN Yong2, ZHOU Qiaoling2,3

(1 Sichuan Chuanjian Geotecnical Survey Design Institute Co. , Ltd. , Chengdu 610095, China; 2 Sichuan ProvincialArchitectural Design and Research Institute Co. , Ltd. , Chengdu 610095, China; 3 Complex Structure Design and Research Center,Sichuan Provincial Architectural Design and Research Institute Co. , Ltd. , Chengdu 610095, China; 4 Jianhua ConstructionMATERIALS (SICHUAN) Co. , Ltd. , Guanghan 618300, China)

Abstract:The current research situation and shortcomings of reinforced cement-soil retaining structure were brieflysummarized. Combined with the pile forming technology of reinforced cement-soil pile in gravel soil, and based on thetheory of earth pressure arch, a non-occlusive distributed reinforced high-pressure jet grouting pile layout was put forward.The structural form, components, and the setting mode of each component of reinforced high-pressure jet grouting anchoragewall compound retaining system were introduced, the basic assumptions of design method of the retaining system wasexpounded, the mechanical model of the retaining system was established. Based on the principle of equal rigidity, aconversion method between the dispersed wall and the solid wall was put forward. Based on the principle of staticequilibrium, a method for analyzing anti-overturning stability and anti-sliding stability of the cantilever wall and anchoragepile mechanical model was proposed; On the basis of the basic assumptions, the method of transforming the internal force ofthe wall into the axial force of the pile was proposed, and the method of strength checking computation was given. Finally,the feasibility of the reinforced high-pressure jet grouting anchorage wall compound retaining system and its calculationmethod were verified through the application of a deep foundation pit project in Chongqing city.

Keywords:reinforce jet; high-pressure jet; cement-soil wall; cantilever wall; anchorage pile; equal rigidity transform;retaining system

第一作者:黃香春,碩士,正高級(jí)工程師,注冊(cè)土木工程師( 巖土),主要從事巖土、結(jié)構(gòu)方法融合研究,Email: sccdhxc@163. com.

[引用本文] 黃香春,趙仕興,羅永忠,等. 加筋高壓旋噴墻錨復(fù)合支擋體系設(shè)計(jì)方法研究[J]. 建筑結(jié)構(gòu),2023,53(7):130-136,142. HUANG Xiangchun,ZHAO Shixing,LUO Yongzhong,et al. Study on design method of reinforced highpressure jet grouting anchorage wall compound retaining system[J]. Building Structure,2023,53(7):130-136,142.