Great news came from the construction site of highway and railway dual-purpose bridge of daoqingzhou river crossing channel in Fuzhou City, Fujian Province. The first hoisting of steel bearing of 135000kn super large hyperboloid spherical vibration reduction and Isolation Bridge, which was undertaken by Hengshui Rubber General Factory Co., Ltd., was successfully hoisted. It marks that the manufacturing technology of bridge bearing in China has stepped onto a new level. The road rail dual-purpose bridge of daoqingzhou river crossing channel is designed by China Railway Bridge Research Institute. The total length of the project is 6.82km. The road and track works are arranged in a double-layer way. The length of the road and rail construction bridge is 4.35km, including 2.2685 km long-span steel truss composite beam. The main bridge of navigation opening adopts 276 m long-span steel truss composite beam, The other approach bridges in the water adopt the steel truss composite beam scheme with 84 m and 72 m reference span. The total investment of the project is 5.15 billion yuan. The total number of double curved spherical bearings for seismic reduction and isolation is used in the bridge section across the river one hundred and six The maximum size is 135000kN 。 In the project bidding, Hengshui Rubber General Factory Co., Ltd. won the bid and won the manufacturing right of these huge objects.
Hengshui Rubber Factory Co., Ltd. is a company with more than 300 employees and registered capital one point five Hundred million yuan of private enterprises in Hengshui engineering rubber industry twenty Over the years, it has become a well-known private enterprise, twenty Over the years, Hengshui Rubber General Factory Co., Ltd. has cooperated with scientific research institutions of colleges and universities to produce many different types and specifications of bridge bearings. two thousand and ten It was designed by Anhui Transportation Design Institute and produced by the company itself one thousand six hundred and seventy × one thousand six hundred and seventy × The 289mm super large lead core isolation rubber bearing is applied to the Qingyi River Bridge project of Wushen canal. It is the first case in China with high quality, high standard and large specification. However, for Hengshui Rubber General Factory Co., Ltd., it is facing great difficulties and challenges in design, technology, technology, equipment and so on. In the face of many difficulties, the company leaders first proposed The resounding slogan of "there is no difficulty in front of a hero, there are always more ways than difficulties". The company is mobilized to go all out to gnaw this hard bone. Organize the design, technology, production, quality inspection and other departments of the company Call Many meetings were held by Zhuge Liang, and everyone offered suggestions and solutions to the problems, Technical director The three design institutes jointly optimized the design, and organized experts and professors from Tongji University, Fuzhou University, Huazhong University of science and technology, and the second survey and Design Institute of CCCC to hold a demonstration meeting, and finally determined the manufacturing scheme. With the plan in place, how can this behemoth gnaw down? Hyperboloid The size of spherical bearing is far larger than that of conventional bearing, and its manufacturing process is complex and special. In order to ensure the structure and performance of the product, the company's technical personnel have carried out accurate theoretical calculation and finite element analysis on the key technical parameters of the product, such as the selection of wear-resistant materials, the control of friction coefficient, energy consumption capacity, isolation period, equivalent stiffness and the influence of the bearing on the upper beam and lower pad stone. In order to further grasp the processing and manufacturing process of the product, the company specially processed two 6000kn similar bearings, and carried out shaking table test and high-speed friction test. The relevant performance met the design requirements, and obtained the first-hand technology, which is to gnaw down 135000KN It has laid the technical foundation of theory and practice.
The size and weight of the hyperboloid spherical vibration reduction and isolation bearing casting is very large, and the weight of a single part is up to 60 tons. Through cooperation with domestic heavy machinery factories, the company has realized the one-time pouring of products to ensure the casting quality of products. In addition, the company is specially equipped with lifting capacity according to the needs of products one hundred Tons of crane and other processing equipment, for the production and testing of products to provide a guarantee. In terms of product anti-corrosion, in order to be suitable for coastal salt fog area environment, the company strictly carries out spraying processing in accordance with the steel bridge anti-corrosion standard to ensure the durability of the product. The overall quality of the product has been highly appraised by the chief engineer of the project. Through the close three After months of hard work day and night, Hengshui Rubber General Factory Co., Ltd., a small private enterprise, has finally gnawed down this hard bone.
At present, there are four 135000KN Hengshui Rubber General Factory Co., Ltd. will rely on its own wisdom and perseverance to hold up the road Qingzhou river crossing channel road rail dual-purpose bridge this beautiful rainbow. It is the practice of General Secretary Xi Jinping “ Innovation is the basis of sustainable development of enterprises and the way to win the market ” The scientific exposition of the theory.