Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for preventing hollowing of extra-large area ground
The invention provides an ultra-large area ground hollowing prevention construction method which comprises the following steps that plain soil is backfilled, specifically, plain soil is evenly laid in a foundation pit and compacted to form a plain soil backfilling layer; graded sandstone backfilling is conducted, specifically, graded sandstone is matched according to the proportion and then laid on the top of the plain soil backfilling layer; ground reinforcing steel bar construction is conducted, and prefabricated meshes are laid on the top of the backfilled graded gravel layer in a single-layer mode; rigid layer construction and maintenance, wherein steel fiber reinforced concrete is pumped and poured in a sky pump mode and leveled; joint cutting is conducted, specifically, 12-24 h after rigid layer construction is completed, the bottom face is cut according to the column axis; caulking maintenance is conducted, the position of a kerf is cleaned up, and the kerf of the pavement is filled with a crack pouring material; the plain soil backfill layer is formed below the rigid layer through plain soil backfill, the graded sandstone layer is formed through graded sandstone backfill, stable support is provided for the bottom of the rigid layer, stability is high, and hollowing caused by sedimentation is not prone to occurring.
本发明提供一种超大面积地面防止空鼓施工方法，包括以下步骤：素土回填，素土均匀摊铺在基坑内部，夯打密实形成素土回填层；级配砂石回填，级配砂石按照比例配比后摊铺在素土回填层的顶部；地面钢筋施工，将预制好的网片单层铺设在回填的级配砂石层的顶部；刚性层施工及养护，采用天泵的方式泵送浇筑钢纤维混凝土并整平；切缝，在刚性层施工完成12～24h后，按柱轴线对底面进行切割；嵌缝养护，对切缝位置清理干净，采用灌缝材料填充路面的切缝；本发明中，刚性层的下方通过素土回填形成素土回填层，级配砂石回填形成级配砂石层，在刚性层的底部对其提供稳固的支撑，稳定性高，不易沉降形成空鼓。
Construction method for preventing hollowing of extra-large area ground
The invention provides an ultra-large area ground hollowing prevention construction method which comprises the following steps that plain soil is backfilled, specifically, plain soil is evenly laid in a foundation pit and compacted to form a plain soil backfilling layer; graded sandstone backfilling is conducted, specifically, graded sandstone is matched according to the proportion and then laid on the top of the plain soil backfilling layer; ground reinforcing steel bar construction is conducted, and prefabricated meshes are laid on the top of the backfilled graded gravel layer in a single-layer mode; rigid layer construction and maintenance, wherein steel fiber reinforced concrete is pumped and poured in a sky pump mode and leveled; joint cutting is conducted, specifically, 12-24 h after rigid layer construction is completed, the bottom face is cut according to the column axis; caulking maintenance is conducted, the position of a kerf is cleaned up, and the kerf of the pavement is filled with a crack pouring material; the plain soil backfill layer is formed below the rigid layer through plain soil backfill, the graded sandstone layer is formed through graded sandstone backfill, stable support is provided for the bottom of the rigid layer, stability is high, and hollowing caused by sedimentation is not prone to occurring.
本发明提供一种超大面积地面防止空鼓施工方法，包括以下步骤：素土回填，素土均匀摊铺在基坑内部，夯打密实形成素土回填层；级配砂石回填，级配砂石按照比例配比后摊铺在素土回填层的顶部；地面钢筋施工，将预制好的网片单层铺设在回填的级配砂石层的顶部；刚性层施工及养护，采用天泵的方式泵送浇筑钢纤维混凝土并整平；切缝，在刚性层施工完成12～24h后，按柱轴线对底面进行切割；嵌缝养护，对切缝位置清理干净，采用灌缝材料填充路面的切缝；本发明中，刚性层的下方通过素土回填形成素土回填层，级配砂石回填形成级配砂石层，在刚性层的底部对其提供稳固的支撑，稳定性高，不易沉降形成空鼓。
Construction method for preventing hollowing of extra-large area ground
超大面积地面防止空鼓施工方法
LIU QIANG (Autor:in) / WANG ZHAN (Autor:in) / KANG HONGJIAN (Autor:in) / HE HONGSHENG (Autor:in) / FAN YUEMIN (Autor:in) / ZHU XUELEI (Autor:in) / ZHANG XIAOGUANG (Autor:in) / TIAN FAN (Autor:in)
20.10.2023
Patent
Elektronische Ressource
Chinesisch
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