- 摘 要
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（1 東南大學(xué)建筑設(shè)計研究院有限公司， 南京 210096； 2 東南大學(xué)土木工程學(xué)院， 南京 210096）
［摘要］通過對地震影響系數(shù)曲線段表達(dá)式的數(shù)值對比分析，考慮抗震設(shè)防烈度、設(shè)計基本地震加速度、設(shè)計地震分組和場地類別4個場地地震條件參數(shù)的影響，提出地震影響系數(shù)對比常數(shù)的概念及表達(dá)式，求解并給出不同地震條件下對比常數(shù)的數(shù)值與圖表，且對比常數(shù)是地震影響系數(shù)表達(dá)式自身固有的屬性。在此基礎(chǔ)上，對現(xiàn)行規(guī)范中最小地震剪力系數(shù)值的規(guī)定進(jìn)行了剖析，提出其規(guī)定應(yīng)考慮場地特征周期（場地類別、設(shè)計地震分組）的影響。依據(jù)對比常數(shù)，給出了最小地震剪力系數(shù)值的修正系數(shù)。對比常數(shù)和修正系數(shù)能客觀綜合地反映場地地震條件對結(jié)構(gòu)地震反應(yīng)大小的影響，可用來定量地分析和判別結(jié)構(gòu)的地震作用水平。
［關(guān)鍵詞］地震作用； 地震影響系數(shù)； 最小地震剪力系數(shù)
中圖分類號：TU352.1 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2015)04-0009-05
Comparison study on earthquake affecting coefficient values
Lu Fengyong1, Li Aiqun2
(1 Architects & Engineers Co., Ltd. of
Abstract:Through the comparison analyses of expression values of earthquake affecting coefficient curves, the concept and expression of comparison constant for earthquake affecting coefficient were put forward considering the impacts of 4 site seismic condition parameters of fortification intensity, design basic acceleration,
design earthquake group and site classification. The values and charts of comparison constants were solved and given under different earthquake conditions. The comparison constant was the inherent attributes of earthquake affecting coefficient expression. On this basis, the provisions of the minimum seismic shear coefficient value in current code were put forward. It was proposed that the code should consider the effects of site characteristic period including the site category and design earthquake group. Based on the comparison constant, the correction coefficient for the minimum seismic shear coefficient value was given. The comparison constant and correction coefficient can objectively reflect the comprehensive effect of site earthquake conditions on the earthquake action of the structure, and analyze and judge the earthquake action level of the structure quantitatively.
Keywords:earthquake action; earthquake affecting coefficient; minimum seismic shear coefficient
作者簡介：魯風(fēng)勇，碩士，高級工程師，一級注冊結(jié)構(gòu)工程師，Email：lufy163@163.com。
參考文獻(xiàn)
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［2］汪大綏,周建龍,姜文偉,等. 超高層結(jié)構(gòu)地震剪力系數(shù)的研究［C］//第十屆中日建筑結(jié)構(gòu)技術(shù)交流會論文集.南京,2013.
［3］GB 50011—2010 建筑抗震設(shè)計規(guī)范［S］. 北京: 中國建筑工業(yè)出版社，2010.
［4］DGJ 089—2003 建筑抗震設(shè)計規(guī)程［S］. 上海: 上海市建設(shè)工程標(biāo)準(zhǔn)定額管理總站，2003.
