DB13(J)/T 8369-2020 城市轨道交通基坑内支撑支护技术标准
简介
DB13 (J) /T 8369-2020
备案号∶ J15355-2020
城市轨道交通基坑内支撑支护技术标准
Technical standard for supporting in foundation pit of urban rail transit
2020-11-01 实施
2020-08-28 发布 目次 1 总则······································································ 1 2 术语和符号····························································· 2 2.1 术语································································· 2 2.2 符号································································· 4 3 基本规定································································ 7 3.1 设计原则····························································7 3.2 作用······························································· 12 3.3 内支撑支护结构形式············································· 13 3.4 勘察、设计和施工················································14 4 勘察·····································································16 4.1 一般规定·························································· 16 4.2 周边环境调查····················································· 16 4.3 岩土工程勘察····················································· 18 4.4 地下水勘察························································20 4.5 成果······························································· 23 5 设计·····································································25 5.1 一般规定·························································· 25 5.2 土压力和水压力计算············································· 26 5.3 材料选用及基本构造要求········································ 33 5.4 挡土结构设计····················································· 36 5.5 内支撑体系结构设计············································· 45 5.6 地下水控制设计·················································· 57 6 施工·····································································65 6.1 一般规定·························································· 65 6.2 材料进场验收····················································· 65 6.3 钢筋混凝土结构构件施工········································ 66 6.4 基坑开挖·························································· 67 6.5 内支撑体系施工和拆除···········································67 7 监测·····································································75 7.1 一般规定·························································· 75 7.2 监测项目·························································· 76 7.3 监测点布置和监测精度···········································80 7.4 监测频率和报警·················································· 87 8 检验和验收····························································95 8.1 一般规定·························································· 95 8.2 检验······························································· 95 8.3 验收······························································· 99 9 风险控制····························································· 101 9.1 一般规定·························································101 9.2 风险分级·························································101 9.3 风险控制和处理措施············································102 附录A 基坑工程周边环境调查···································· 105 附录B 极限平衡法····················································114 附录C 圆形截面混凝土支护桩的承载力计算·················· 119 附录D 钢管支撑常用规格技术参数表··························· 123 附录E 支撑结构常用节点做法参考图··························· 124 本标准用词说明·························································131 引用标准名录····························································132 附：条文说明····························································133
DB13 (J) /T 8369-2020
备案号∶ J15355-2020
城市轨道交通基坑内支撑支护技术标准
Technical standard for supporting in foundation pit of urban rail transit
2020-11-01 实施
2020-08-28 发布 目次 1 总则······································································ 1 2 术语和符号····························································· 2 2.1 术语································································· 2 2.2 符号································································· 4 3 基本规定································································ 7 3.1 设计原则····························································7 3.2 作用······························································· 12 3.3 内支撑支护结构形式············································· 13 3.4 勘察、设计和施工················································14 4 勘察·····································································16 4.1 一般规定·························································· 16 4.2 周边环境调查····················································· 16 4.3 岩土工程勘察····················································· 18 4.4 地下水勘察························································20 4.5 成果······························································· 23 5 设计·····································································25 5.1 一般规定·························································· 25 5.2 土压力和水压力计算············································· 26 5.3 材料选用及基本构造要求········································ 33 5.4 挡土结构设计····················································· 36 5.5 内支撑体系结构设计············································· 45 5.6 地下水控制设计·················································· 57 6 施工·····································································65 6.1 一般规定·························································· 65 6.2 材料进场验收····················································· 65 6.3 钢筋混凝土结构构件施工········································ 66 6.4 基坑开挖·························································· 67 6.5 内支撑体系施工和拆除···········································67 7 监测·····································································75 7.1 一般规定·························································· 75 7.2 监测项目·························································· 76 7.3 监测点布置和监测精度···········································80 7.4 监测频率和报警·················································· 87 8 检验和验收····························································95 8.1 一般规定·························································· 95 8.2 检验······························································· 95 8.3 验收······························································· 99 9 风险控制····························································· 101 9.1 一般规定·························································101 9.2 风险分级·························································101 9.3 风险控制和处理措施············································102 附录A 基坑工程周边环境调查···································· 105 附录B 极限平衡法····················································114 附录C 圆形截面混凝土支护桩的承载力计算·················· 119 附录D 钢管支撑常用规格技术参数表··························· 123 附录E 支撑结构常用节点做法参考图··························· 124 本标准用词说明·························································131 引用标准名录····························································132 附：条文说明····························································133
推荐下载
精品资源合集一键下载