Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pile foundation hole forming construction method under boulder water outlet stratum condition
The invention discloses a pile foundation pore-forming construction method under the condition of a boulder water outlet stratum. The method comprises the following steps: a, selecting a rotary drilling rig with proper power according to the pile diameter and the pile length of a bridge; b, a rotary drilling rig is adopted to take slag and form holes at the position of a pile foundation according to the depth of 4-6 meters; c, backfill concrete is constructed according to the underwater concrete construction technology, and the backfill concrete and the pile core concrete are the same in mark; d, the backfill concrete is cured, and when the strength of the concrete reaches 70%, a rotary drilling rig is used for coring the backfill concrete; and e, the procedures b-d are repeated, circulating construction is conducted to the designed hole bottom, and pile foundation hole forming is completed. The technical problems that during pile foundation hole forming, hole deviation, hole shrinkage, hole expansion and hole collapse are caused, a reinforcement cage is not placed in place, and the construction progress, the construction safety and the hole forming quality are affected are effectively solved.
一种孤石漂石出水地层条件下的桩基成孔施工方法，包括以下步骤：a.根据桥梁桩径和桩长选择合适功率的旋挖钻机；b.在桩基位置，采用旋挖钻机按4‑6米深度取渣成孔；c.按水下混凝土施工工艺施工回填混凝土，回填混凝土与桩芯混凝土标号相同；d.对回填混凝土进行养生，待混凝土强度达到70％，用旋挖钻机对回填混凝土取芯；e.重复上述b‑d工序，循环施工至设计孔底，完成桩基成孔。本发明有效解决桩基成孔时偏孔、缩孔、扩孔、坍孔、钢筋笼安放不到位，影响施工进度、施工安全和成孔质量的技术难题。
Pile foundation hole forming construction method under boulder water outlet stratum condition
The invention discloses a pile foundation pore-forming construction method under the condition of a boulder water outlet stratum. The method comprises the following steps: a, selecting a rotary drilling rig with proper power according to the pile diameter and the pile length of a bridge; b, a rotary drilling rig is adopted to take slag and form holes at the position of a pile foundation according to the depth of 4-6 meters; c, backfill concrete is constructed according to the underwater concrete construction technology, and the backfill concrete and the pile core concrete are the same in mark; d, the backfill concrete is cured, and when the strength of the concrete reaches 70%, a rotary drilling rig is used for coring the backfill concrete; and e, the procedures b-d are repeated, circulating construction is conducted to the designed hole bottom, and pile foundation hole forming is completed. The technical problems that during pile foundation hole forming, hole deviation, hole shrinkage, hole expansion and hole collapse are caused, a reinforcement cage is not placed in place, and the construction progress, the construction safety and the hole forming quality are affected are effectively solved.
一种孤石漂石出水地层条件下的桩基成孔施工方法，包括以下步骤：a.根据桥梁桩径和桩长选择合适功率的旋挖钻机；b.在桩基位置，采用旋挖钻机按4‑6米深度取渣成孔；c.按水下混凝土施工工艺施工回填混凝土，回填混凝土与桩芯混凝土标号相同；d.对回填混凝土进行养生，待混凝土强度达到70％，用旋挖钻机对回填混凝土取芯；e.重复上述b‑d工序，循环施工至设计孔底，完成桩基成孔。本发明有效解决桩基成孔时偏孔、缩孔、扩孔、坍孔、钢筋笼安放不到位，影响施工进度、施工安全和成孔质量的技术难题。
Pile foundation hole forming construction method under boulder water outlet stratum condition
一种孤石漂石出水地层条件下的桩基成孔施工方法
CHEN FAWEN (Autor:in) / WANG KAIYIN (Autor:in) / YANG YONG (Autor:in) / QIAO HUJUN (Autor:in) / LI GUOJUN (Autor:in) / WANG XIAOSHENG (Autor:in) / BAI HAIZHU (Autor:in) / MA MINJIA (Autor:in) / MA HAIZHOU (Autor:in) / YANG XINGJIE (Autor:in)
08.04.2022
Patent
Elektronische Ressource
Chinesisch
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