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A platform for research: civil engineering, architecture and urbanism
Construction technology of offshore bridge high-rise pile cap
The invention discloses a construction process of an offshore bridge high pile cap, which is characterized in that a pouring jacket of a steel-concrete structure is adopted for construction, and the pouring jacket consists of a pouring jacket bottom plate and a steel side mold which are prefabricated by reinforced concrete; the construction process comprises the following stages: a preparation stage, a pouring jacket mounting stage, a pouring jacket lowering stage, a pouring jacket bottom plate plugging and water pumping stage and a bearing platform concrete pouring stage. The preparation stage comprises the following steps of pile foundation casing sinking, cast-in-place pile construction, pile head flattening of the pile foundation casing, casing box bottom plate and apron board prefabrication and steel side mold manufacturing. In the pouring jacket mounting stage, a pouring jacket bottom plate is mounted firstly, and then a steel side mold is mounted; a bottom plate of the pouring jacket is installed through a suspension frame, and the suspension frame comprises a pile cap, a reverse hanging beam and two first finish rolling deformed steel bars. In the pouring jacket lowering stage, a jack lowering system is installed on a bottom plate of the pouring jacket, and the jack lowering system comprises an I-shaped hanging bracket, a carrying pole beam, a center hole jack and a steel strand. According to the construction technology, the construction difficulty can be greatly reduced, and the construction efficiency can be improved.
本发明公开了一种海上桥梁高桩承台的施工工艺，采用钢混结构的套箱施工，该套箱由钢筋混凝土预制的套箱底板和钢侧模组成；施工工艺包括以下阶段：准备阶段、套箱安装阶段、套箱下放阶段、套箱底板封堵抽水阶段以及承台混凝土浇筑阶段。准备阶段包括以下步骤：桩基护筒沉设、灌注桩施工、桩基护筒桩头切平、套箱底板和裙板预制以及钢侧模制作；在套箱安装阶段，先安装套箱底板，再安装钢侧模；套箱底板采用悬吊架安装，该悬吊架包括桩帽、反吊梁和两根第一精轧螺纹钢；在套箱下放阶段，在套箱底板上安装千斤顶下放系统，该千斤顶下放系统包括工字形吊架、扁担梁、穿心千斤顶和钢绞线。本发明的施工工艺能大大降低施工难度，并能提高施工效率。
Construction technology of offshore bridge high-rise pile cap
The invention discloses a construction process of an offshore bridge high pile cap, which is characterized in that a pouring jacket of a steel-concrete structure is adopted for construction, and the pouring jacket consists of a pouring jacket bottom plate and a steel side mold which are prefabricated by reinforced concrete; the construction process comprises the following stages: a preparation stage, a pouring jacket mounting stage, a pouring jacket lowering stage, a pouring jacket bottom plate plugging and water pumping stage and a bearing platform concrete pouring stage. The preparation stage comprises the following steps of pile foundation casing sinking, cast-in-place pile construction, pile head flattening of the pile foundation casing, casing box bottom plate and apron board prefabrication and steel side mold manufacturing. In the pouring jacket mounting stage, a pouring jacket bottom plate is mounted firstly, and then a steel side mold is mounted; a bottom plate of the pouring jacket is installed through a suspension frame, and the suspension frame comprises a pile cap, a reverse hanging beam and two first finish rolling deformed steel bars. In the pouring jacket lowering stage, a jack lowering system is installed on a bottom plate of the pouring jacket, and the jack lowering system comprises an I-shaped hanging bracket, a carrying pole beam, a center hole jack and a steel strand. According to the construction technology, the construction difficulty can be greatly reduced, and the construction efficiency can be improved.
本发明公开了一种海上桥梁高桩承台的施工工艺，采用钢混结构的套箱施工，该套箱由钢筋混凝土预制的套箱底板和钢侧模组成；施工工艺包括以下阶段：准备阶段、套箱安装阶段、套箱下放阶段、套箱底板封堵抽水阶段以及承台混凝土浇筑阶段。准备阶段包括以下步骤：桩基护筒沉设、灌注桩施工、桩基护筒桩头切平、套箱底板和裙板预制以及钢侧模制作；在套箱安装阶段，先安装套箱底板，再安装钢侧模；套箱底板采用悬吊架安装，该悬吊架包括桩帽、反吊梁和两根第一精轧螺纹钢；在套箱下放阶段，在套箱底板上安装千斤顶下放系统，该千斤顶下放系统包括工字形吊架、扁担梁、穿心千斤顶和钢绞线。本发明的施工工艺能大大降低施工难度，并能提高施工效率。
Construction technology of offshore bridge high-rise pile cap
一种海上桥梁高桩承台的施工工艺
CEN YU (author) / CHEN CHAO (author) / GU SAIHUA (author) / XIA YUAN (author) / XIAO JIAN (author) / ZHONG JINJUN (author) / LIU ZHIHAO (author) / GONG SHUAIJIE (author) / HE XIAOJIE (author) / WANG ZECHENG (author)
2023-09-01
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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