구조용 데크플레이트를 사용한 합성슬래브의 처짐제어를 위한 유효 단면2차모멘트 및 경간깊이 비 평가

Abstract

A proper evaluation of effective moment of inertia involved tensile cracking effect and tension stiffening effect is an important consideration in the design of one-way composite slabs reinforced with structural steel decking. Especially common uses of high-strength reinforcing structural steel decking and shallow sections caused serviceability problem of one-way composite slabs to be of more importance. Methods to evaluate effective moment of inertia and allowable span-depth ratio for controlling deflection in one-way composite slabs were developed. A new presented formula for effective moment of inertia can apply to simple as eliminating the necessity of computing moment of inertia of cracked section. Allowable span-depth ratio that limitation of long-term deflections will be satisfactory considered loading conditions, support conditions, deck plate ratio, span length, and allowable deflections in ACI 318-02. The proposed methods in this study show a more justifiable than other procedures such as ACI 318-02 and ANSI/ASCE.