PRECISION OF <i>E<sub>f</sub></i> METHOD FOR EVALUATING LOAD-CARRYING CAPACITY OF LONG-SPAN CABLE-STAYED GIRDER AND VERIFICATION OF ITS ULTIMATE STRENGTH

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  • 長大斜張橋主桁の耐荷力評価手法としての<i>E<sub>f</sub></i>法の精度と終局強度照査法
  • 長大斜張橋主桁の耐荷力評価手法としてのEf法の精度と終局強度照査法
  • チョウダイ シャチョウキョウ シュゲタ ノ タイカリョク ヒョウカ シュホウ ト シテ ノ Efホウ ノ セイド ト シュウキョク キョウド ショウサホウ

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Abstract

In the design of cable-stayed bridges in our country, the stress and stability verifications are generally made based on the specification of highway bridge (JSHB). However, the validity of using the verification formula of the specification of JSHB for the complicated structure such as the cable-stayed bridge has not been made clear. Therefore, the development of the simple and precise method for calculating the ultimate strength of the cable-stayed bridge and moreover the establishment of the safety verification method are wanted. In this paper, for the calculation of the ultimate strength of long span cable-stayed bridges, the effectiveness of the Ef method is made clear through comparison with the result obtained from the Ef method and that from the elasto-plastic finite displacement analysis. Moreover, by comparing a newly proposed verification formula with the verification formula of the specification of highway bridge, the effectivity of the propose formula is presented.

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