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大秦线拟用的跨度32m、24m 后张法预应力混凝土梁四套设计图(图号:专桥2039、2040、2041、2042),经专业勘测设计公司3月27日在京组织审鉴完毕,已报铁道部基建总局、鉴定委员会核备。这四套图是由专业勘设公司标准处设计的,其跨度、全长、梁高、曲线半径、附属设备以及设计基本原理等均与叁标桥2019标准图和专桥2037、2038设计图相同,以便互换代用。张拉体系为拉丝体系,预应力筋采用24φ5mm 抗拉极限强度 R_y~j=1.6GP_a(16000kgf/cm~2)的钢丝束。由18个单位的52名代表参加的审鉴会,对这四套图提出以下审查意见:1.本设计是在总结以往后张梁标准设计经验的础基上,吸收各图之长加以改进而成,梁的刚度和稳定性均有提高,梁的外形美观,设计是成功的。
Daqin Line intends to use the span of 32m, 24m post-tensioned prestressed concrete beam four sets of design plans (Figure: Bridge 2039,2040,2041,2042), the professional survey and design company in Beijing on March 27 completed the review, It has been reported to the Infrastructure Department of the Ministry of Railways and the appraisal committee for verification. The four sets of maps are designed by the standards department of professional prospecting companies. The span, full length, beam height, curve radius, ancillary equipment and basic design principles are the same as the design drawings of the 2019 and the 2037,2038 , In order to exchange substitutes. Tension system for the drawing system, prestressed tendons with 24φ5mm tensile ultimate strength R_y ~ j = 1.6GP_a (16000kgf / cm ~ 2) of the steel wire bundle. The review meeting attended by 52 representatives from 18 units proposed the following review opinions on these four plans: 1. This design absorbs the length of each figure to be improved on the basis of summarizing the experience of the past design standards for back-beam As a result, the stiffness and stability of the beam are improved, the appearance of the beam is beautiful, the design is successful.