Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of gravel soil compaction pile composite foundation of collapsible stratum
The invention provides a construction method of a gravel soil compaction pile composite foundation of a collapsible stratum. The construction method comprises the specific steps that 1, a pile hole is punched; 2, the pile hole is reamed to the position below a permeable layer, and a steel sleeve is placed at the reamed position; 3, the pile hole is filled with gravel soil and compacted; 4, fine aggregate concrete is poured into an annulus between the gravel soil and the steel sleeve; 5, after the strength in the pile hole reaches 70%, the steel sleeve is pulled out; 6, the pile hole is filled with gravel soil and compacted; and 7, a mattress layer at the top of the gravel soil is constructed. According to the construction method, the fine aggregate concrete and the mattress layer are arranged, a pile cap is formed, and the situation that water seeping from the outer portion and the lateral permeable layer enters the collapsible stratum, and consequently collapse damage occurs is prevented. According to the construction method, surface water is effectively prevented from entering the collapsible stratum, the possibility of collapse damage of the stratum is reduced, and the structural safety of a building is guaranteed.
本发明提供一种湿陷性地层的碎石土挤密桩复合地基施工方法，具体步骤为：步骤一，先打桩孔，步骤二，再将桩孔扩孔至透水层以下，并在扩孔处放入钢套筒；步骤三，在桩孔内填碎石土并压密，步骤四，然后在碎石土与钢套筒之间环空内浇筑细石混凝土；步骤五，桩孔内强度达到70%后拔出钢套筒；步骤六，补填碎石土并压实；步骤七，施工碎石土顶部褥垫层。本发明设置细石混凝土和褥垫层，形成桩帽，防止外部和侧向透水层的渗水进入湿陷性地层，发生湿陷破坏。本发明有效的阻止地表水进入湿陷性地层中，降低地层产生湿陷破坏的可能性，保障建筑物的结构安全。
Construction method of gravel soil compaction pile composite foundation of collapsible stratum
The invention provides a construction method of a gravel soil compaction pile composite foundation of a collapsible stratum. The construction method comprises the specific steps that 1, a pile hole is punched; 2, the pile hole is reamed to the position below a permeable layer, and a steel sleeve is placed at the reamed position; 3, the pile hole is filled with gravel soil and compacted; 4, fine aggregate concrete is poured into an annulus between the gravel soil and the steel sleeve; 5, after the strength in the pile hole reaches 70%, the steel sleeve is pulled out; 6, the pile hole is filled with gravel soil and compacted; and 7, a mattress layer at the top of the gravel soil is constructed. According to the construction method, the fine aggregate concrete and the mattress layer are arranged, a pile cap is formed, and the situation that water seeping from the outer portion and the lateral permeable layer enters the collapsible stratum, and consequently collapse damage occurs is prevented. According to the construction method, surface water is effectively prevented from entering the collapsible stratum, the possibility of collapse damage of the stratum is reduced, and the structural safety of a building is guaranteed.
本发明提供一种湿陷性地层的碎石土挤密桩复合地基施工方法，具体步骤为：步骤一，先打桩孔，步骤二，再将桩孔扩孔至透水层以下，并在扩孔处放入钢套筒；步骤三，在桩孔内填碎石土并压密，步骤四，然后在碎石土与钢套筒之间环空内浇筑细石混凝土；步骤五，桩孔内强度达到70%后拔出钢套筒；步骤六，补填碎石土并压实；步骤七，施工碎石土顶部褥垫层。本发明设置细石混凝土和褥垫层，形成桩帽，防止外部和侧向透水层的渗水进入湿陷性地层，发生湿陷破坏。本发明有效的阻止地表水进入湿陷性地层中，降低地层产生湿陷破坏的可能性，保障建筑物的结构安全。
Construction method of gravel soil compaction pile composite foundation of collapsible stratum
一种湿陷性地层的碎石土挤密桩复合地基的施工方法
DI SHENGJIE (Autor:in) / ZHOU HENG (Autor:in) / HUANG PENG (Autor:in) / ZHAO ZHIXIANG (Autor:in) / LI ZUFENG (Autor:in) / ZHANG YING (Autor:in) / LIU JING (Autor:in) / LU XI (Autor:in)
02.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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