原文传递
OBJECTIVES AND EARLY RESEARCH OF AUTOSTRESS DESIGN.
| 题名： | OBJECTIVES AND EARLY RESEARCH OF AUTOSTRESS DESIGN. |
| 作者： | Haaijer-G |
| 关键词： | HIGHWAY-BRIDGES; AUTOSTRESS-DESIGN; RESEARCH-; PLASTIC-DESIGN; PLASTIC-MOMENTS; SERVICEABILITY-; OVERLOADS- |
| 摘要： | The early research of autostress design started with the simple idea of using plastic design of continuous members so that prismatic members could be used from one abutment to the other. This was expected to result in significant savings in fabrication costs. Because most steel bridge beams and girders do not satisfy the compact section requirement of conventional plastic design, a new approach based on the concept of an effective plastic moment made it possible to adapt plastic design for bridge design. Serviceability requirements received special attention because prismatic members designed for strength could very well yield under actual loading conditions such as the overloads specified by the American Association of State Highway and Transportation Officials. Procedures were developed to account for the effects of local yielding. Advantage was taken of the ability of steel members to redistribute automatically any excess moments; hence the term autostress design. |
| 总页数： | Transportation Research Record. 1993. (1380) pp1-8 (10 Fig., 19 Ref.) |
| 报告类型： | 科技报告 |
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