Under-construction HIGH-SPEED EXPRESS BRIDGE || BAIHUA LAKE BRIDGE 百花湖特大桥 #construction #bridge

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★ Under-construction HIGH-SPEED EXPRESS BRIDGE || BAIHUA LAKE BRIDGE 百花湖特大桥 #construction #bridge


Baihua Lake Bridge
百花湖特大桥

Baihua Lake Bridge is the key project of the expansion project of the G60 Shanghai-Kunming Expressway from Guiyang to Anshun #ChinaBridges #SuperProjects #BridgeSeeGuizhou #Baihua Lake Bridge #AerialPhotographyGuizhou
百花湖特大桥是G60沪昆高速贵阳至安顺段扩容 工程的控制性工程#中国桥梁#超级工程#桥见贵 州 #百花湖特大桥 #航拍黔景 收起

2024-11-01 16:55 IP location: Guizhou
2024-11-01 16:55 IP属地:贵州
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Recently, with the completion of concrete pouring of the 19th section of the right limb of the No. 11 main tower of the bridge, the left and right limb tower columns of the No. 11 main tower of the Gui'an Expansion Section 3 Baihua Lake Bridge exceeded the 100-meter mark, with a total height of 104 meters. The bridge entered the 100-meter high-altitude construction stage.

Baihua Lake Bridge is the controlling project of the entire line. The bridge is 1,086 meters long and is a single-tower cable-stayed bridge with a mixed beam. The main tower is a concrete diamond-shaped space tower with a height of 219 meters. It is divided into 39 cast sections. The middle span of the main bridge superstructure adopts a double-sided box steel-concrete composite beam, and the side span adopts a concrete π-shaped beam.

The bridge adopts hydraulic automatic climbing formwork and rigid frame block lifting construction technology. By setting two tie rods at the lower tower column and four support rods at the middle tower column and upper tower column, the additional stress caused by eccentric loading is effectively eliminated, ensuring the stability and linear accuracy of the main tower of the bridge.

The main tower of Baihua Lake Bridge is adjacent to the Baihua Lake Reservoir. The pile foundation karst develops into a "beaded" karst cave. There is a connection between the karst caves and the Baihua Lake Reservoir. The project construction is difficult and has high environmental protection requirements. The project uses impact drilling technology to successfully complete the main tower pile foundation construction, laying a solid foundation for the bridge pier construction, lower beam casting and the steady rise of the main tower. (Source: Guizhou Highway Group Third Engineering Co., Ltd.)

近日，随着大桥11号主塔右肢第19节段混凝土浇筑完成，贵安扩容3标百花湖大桥11号主塔左右肢塔柱突破百米大关，总高度达104米，大桥进入百米高空施工阶段。

百花湖大桥为全线控制性工程，大桥全长1086米，桥型为混合梁单塔斜拉桥，主塔为混凝土钻石型空间塔，塔高219米，共分为39个浇筑节段，主桥上部结构中跨采用双边箱钢混组合梁、边跨采用混凝土π型梁。

大桥采用液压自动爬模、劲性骨架分块吊装施工技术，通过在下塔柱部位设置两道拉杆，中塔柱、上塔柱部位各设置4道撑杆，有效消除偏心受荷产生的附加应力，确保大桥主塔的稳定性和线形精度。

百花湖大桥主塔毗邻百花湖水库，桩基岩溶发育为“串珠式”溶洞，溶洞之间存在与百花湖水库贯通情况，项目施工难度大、环保要求高，项目采用冲击钻成孔工艺，顺利完成主塔桩基施工，为大桥承台施工、下横梁浇筑及主塔的稳步攀升打下坚实基础。（来源：贵州公路集团第三工程有限公司）


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