Hydraulic box girder, where the main beam includes a beam in the shape of a hollow box. The box girder usually includes any prestressed concrete, structural steel, or composite material, and reinforced concrete. The box is usually rectangular or trapezoidal in cross section. Box girder bridges are usually used for modern elevated structure transportation of highway overpasses and light rails. Although box girder bridges are usually a form of girder bridge, box girder can also be used in cable-stayed bridges and other forms.
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According to the report, the National Energy Administration and other relevant departments are preparing the “Twelfth Five-Year Plan†energy development plan, and the “Emerging Energy Industry Development Plan†will be announced soon. The latter planning period is from 2011 to 2020. During the planning period, it is expected to directly increase investment by 5 trillion yuan, with an average annual increase of 1.5 trillion yuan in output value and 15 million social jobs. The “Emerging Energy Industry Development Plan†has been approved by the National Development and Reform Commission and will be reported to the State Council in accordance with relevant procedures.
The report also mentioned that the development plans of other emerging industries in China will also be introduced in the near future, which will have a major impact on China and the development of the world economy. At present, relevant departments have begun to compile the "Decision of the State Council on Accelerating the Cultivation of Strategic Emerging Industries (Preparation Draft)" and "Strategic Emerging Industry Development Plan". At the same time, the National Development and Reform Commission has determined that in the preparation of the “Twelfth Five-Year Planâ€, emerging strategic industries will be a key point, and the development direction, strategic priorities and major initiatives of the industry will also be determined.
The report believes that China has the better resource conditions for developing emerging industries, but at the same time it faces the "two major bottlenecks" of technological innovation and market cultivation. The cultivation of strategic emerging industry markets faces a series of institutional and institutional obstacles, such as energy price protection and price formation mechanism of new energy industry, marketization reform of power system, reform of administrative system related to "three networks integration", and approval of new drugs in biomedical industry. Programs, etc.
According to the report of the Economic Forecasting Department of the National Information Center, China's “Emerging Energy Industry Development Plan†will be announced soon, and the planning period will be 2011-2020. The cumulative direct increase in investment during the planning period is expected to reach 5 trillion yuan, with an average annual increase of 1.5 trillion yuan.