DB/T 29-270-2019 天津市预应力混凝土矩形支护桩技术规程
简介
DB/T 29-270-2019 备案号∶ J15259-2020
天津市预应力混凝土矩形支护桩技术规程
Technical specifications for prestressed concrete rectangular supporting pile in Tianjin
2020-09-01 实施
2020-06-28 发布 目次 1 总则 ................................................................................................. 1 2 术语和符号 ..................................................................................... 2 2.1 术语 .................................................................................... 2 2.2 符号 .................................................................................... 3 3 基本规定 ......................................................................................... 8 4 矩形支护桩的类型及参数............................................................ 10 4.1 桩型 .................................................................................. 10 4.2 材料 .................................................................................. 11 4.3 桩身构造要求 .................................................................. 13 4.4 质量要求 .......................................................................... 15 5 矩形支护桩基坑支护设计与施工 ................................................ 20 5.1 设计 .................................................................................. 20 5.2 构造 .................................................................................. 21 5.3 施工 .................................................................................. 22 5.4 堆放与运输 ...................................................................... 23 5.5 静压法沉桩 ...................................................................... 25 5.6 锤击法沉桩 ...................................................................... 27 5.7 植入法沉桩 ...................................................................... 29 5.8 施工监测 .......................................................................... 30 6 基坑矩形斜桩支护结构................................................................ 32 6.1 一般规定 .......................................................................... 32 6.2 土压力 .............................................................................. 34 6.3 结构计算 .......................................................................... 41 6.4 稳定性验算 ...................................................................... 47 6.5 构造要求 .......................................................................... 60 6.6 施工 .................................................................................. 65 7 矩形支护桩基坑支护的检测与验收 ............................................ 67 附录 A 矩形支护桩有效预压应力值计算方法 .............................. 69 附录 B 矩形支护桩配筋及力学性能 .............................................. 71 附录 C 矩形支护桩抗压试验方法 .................................................. 79 附录 D 矩形支护桩端板与钢筋锚固连接 ...................................... 80 附录 E 矩形支护桩端板详图 .......................................................... 82 附录 F 矩形支护桩接桩详图 .......................................................... 83 附录 G 抗弯试验方法 ...................................................................... 85 附录 H 抗剪试验方法 ...................................................................... 88 附录 J 矩形支护桩与冠梁连接详图 ............................................... 90 本规程用词说明 ................................................................................. 92 引用标准名录 ..................................................................................... 93 条文说明 ............................................................................................. 95
DB/T 29-270-2019 备案号∶ J15259-2020
天津市预应力混凝土矩形支护桩技术规程
Technical specifications for prestressed concrete rectangular supporting pile in Tianjin
2020-09-01 实施
2020-06-28 发布 目次 1 总则 ................................................................................................. 1 2 术语和符号 ..................................................................................... 2 2.1 术语 .................................................................................... 2 2.2 符号 .................................................................................... 3 3 基本规定 ......................................................................................... 8 4 矩形支护桩的类型及参数............................................................ 10 4.1 桩型 .................................................................................. 10 4.2 材料 .................................................................................. 11 4.3 桩身构造要求 .................................................................. 13 4.4 质量要求 .......................................................................... 15 5 矩形支护桩基坑支护设计与施工 ................................................ 20 5.1 设计 .................................................................................. 20 5.2 构造 .................................................................................. 21 5.3 施工 .................................................................................. 22 5.4 堆放与运输 ...................................................................... 23 5.5 静压法沉桩 ...................................................................... 25 5.6 锤击法沉桩 ...................................................................... 27 5.7 植入法沉桩 ...................................................................... 29 5.8 施工监测 .......................................................................... 30 6 基坑矩形斜桩支护结构................................................................ 32 6.1 一般规定 .......................................................................... 32 6.2 土压力 .............................................................................. 34 6.3 结构计算 .......................................................................... 41 6.4 稳定性验算 ...................................................................... 47 6.5 构造要求 .......................................................................... 60 6.6 施工 .................................................................................. 65 7 矩形支护桩基坑支护的检测与验收 ............................................ 67 附录 A 矩形支护桩有效预压应力值计算方法 .............................. 69 附录 B 矩形支护桩配筋及力学性能 .............................................. 71 附录 C 矩形支护桩抗压试验方法 .................................................. 79 附录 D 矩形支护桩端板与钢筋锚固连接 ...................................... 80 附录 E 矩形支护桩端板详图 .......................................................... 82 附录 F 矩形支护桩接桩详图 .......................................................... 83 附录 G 抗弯试验方法 ...................................................................... 85 附录 H 抗剪试验方法 ...................................................................... 88 附录 J 矩形支护桩与冠梁连接详图 ............................................... 90 本规程用词说明 ................................................................................. 92 引用标准名录 ..................................................................................... 93 条文说明 ............................................................................................. 95
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