A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Pump concrete for steel box girder balance weight of swivel cable-stayed bridge and application of pump concrete
The invention discloses pump concrete for a steel box girder balance weight of a swivel cable-stayed bridge. The concrete is prepared from the following components in parts by weight: 310 to 350 partsof a cementing material, 1840 to 1960 parts of iron ore, 1250 to 1450 parts of iron sand, 5.58 to 5.85 parts of a water reducing agent and 152 to 161 parts of water. The iron ore is graded by 5-31.5mm, and the fineness of the iron sand is 2.3-3.0. The volume weight of the pump concrete for balancing the steel box girder of the swivel cable-stayed bridge can reach 3500kg/m <3>-4000kg/m <3>, the slump is concentrated within the range of 180 +/- 20mm, the using proportion can be adjusted according to the apparent density of aggregate to meet the balancing weight requirement of the design of thesteel box girder of the swivel cable-stayed bridge, the pump concrete for the steel box girder balance weight of the swivel cable-stayed bridge is good in working performance, the pump pressure requirements of common automobile pumps and ground pumps are met, the preparation, transportation and construction methods can be carried out according to the requirements of common concrete, and operationis convenient.
本发明公开了一种转体斜拉桥钢箱梁配重用泵送混凝土，由以下重量份的组分配制而成：胶凝材料310～350重量份，铁矿石1840～1960重量份，铁砂1250～1450重量份，减水剂5.58～5.85重量份，水152～161重量份；其中，铁矿石为5～31.5mm级配，铁砂的细度为2.3～3.0。本发明制备的转体斜拉桥钢箱梁配重用泵送混凝土容重可达3500kg/m3～4000kg/m3，坍落度集中在180±20mm范围，本发明可以根据骨料的表观密度调整使用比例来达到转体斜拉桥钢箱梁设计的配重要求；本发明的转体斜拉桥钢箱梁配重用泵送混凝土工作性能良好，满足一般汽车泵及地泵的泵压要求，且制备、运输、施工方法可按照普通混凝土要求进行，操作方便。
Pump concrete for steel box girder balance weight of swivel cable-stayed bridge and application of pump concrete
The invention discloses pump concrete for a steel box girder balance weight of a swivel cable-stayed bridge. The concrete is prepared from the following components in parts by weight: 310 to 350 partsof a cementing material, 1840 to 1960 parts of iron ore, 1250 to 1450 parts of iron sand, 5.58 to 5.85 parts of a water reducing agent and 152 to 161 parts of water. The iron ore is graded by 5-31.5mm, and the fineness of the iron sand is 2.3-3.0. The volume weight of the pump concrete for balancing the steel box girder of the swivel cable-stayed bridge can reach 3500kg/m <3>-4000kg/m <3>, the slump is concentrated within the range of 180 +/- 20mm, the using proportion can be adjusted according to the apparent density of aggregate to meet the balancing weight requirement of the design of thesteel box girder of the swivel cable-stayed bridge, the pump concrete for the steel box girder balance weight of the swivel cable-stayed bridge is good in working performance, the pump pressure requirements of common automobile pumps and ground pumps are met, the preparation, transportation and construction methods can be carried out according to the requirements of common concrete, and operationis convenient.
本发明公开了一种转体斜拉桥钢箱梁配重用泵送混凝土，由以下重量份的组分配制而成：胶凝材料310～350重量份，铁矿石1840～1960重量份，铁砂1250～1450重量份，减水剂5.58～5.85重量份，水152～161重量份；其中，铁矿石为5～31.5mm级配，铁砂的细度为2.3～3.0。本发明制备的转体斜拉桥钢箱梁配重用泵送混凝土容重可达3500kg/m3～4000kg/m3，坍落度集中在180±20mm范围，本发明可以根据骨料的表观密度调整使用比例来达到转体斜拉桥钢箱梁设计的配重要求；本发明的转体斜拉桥钢箱梁配重用泵送混凝土工作性能良好，满足一般汽车泵及地泵的泵压要求，且制备、运输、施工方法可按照普通混凝土要求进行，操作方便。
Pump concrete for steel box girder balance weight of swivel cable-stayed bridge and application of pump concrete
一种转体斜拉桥钢箱梁配重用泵送混凝土及其应用
WU DONGDONG (author) / OU CHANGHONG (author) / WEN PEI (author) / WANG JILIAN (author) / DONG ZHICHENG (author) / CAO BOWEN (author) / JIANG HONGHUA (author) / LONG YONG (author) / DU CAO (author) / LI SHIZHAN (author)
2020-12-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Study on Design of Concrete Box Girder of A Railway Swivel Cable-Stayed Bridge
| DOAJ | 2021
Cable-stayed bridge steel-concrete composite girder mounting method
| European Patent Office | 2023
Construction method of steel-concrete girder of cable-stayed bridge
| European Patent Office | 2022
System for assembling steel box girder of swivel cable-stayed bridge and adjusting method
| European Patent Office | 2020