摘要：已發(fā)展了的混凝土結(jié)構(gòu)設(shè)計的基本方法到目前為止不管是在局部地方還是世界水平范圍內(nèi)都還不能直接控制破壞。為了形成一個綜合的方案以便在設(shè)計期間對直接破損進(jìn)行控制并且在實際中對其應(yīng)用性進(jìn)行研究，一個名為直接破損控制設(shè)計的設(shè)計觀點被提了出來。盡管提出的這個設(shè)計觀點只是一個概括，但是本文將重點集中于在靜載荷作用下梁，它由素混凝土或者其他的準(zhǔn)脆性材料，比如砌塊，水泥等組成。這個提出的方法適當(dāng)?shù)慕Y(jié)合了基于規(guī)范的應(yīng)立應(yīng)變關(guān)系.五種特有的數(shù)字實例被提出，以次來解說被提出的方法論并且說明對于結(jié)構(gòu)設(shè)計的直接適用性.
CE數(shù)據(jù)庫主題標(biāo)題：破壞，混凝土結(jié)構(gòu)，設(shè)計，梁柱，有限元方法
George D. Hatzigeorgiou1 and Dimitri E. Beskos, F.ASCE2
Abstract: The basic methods of structural concrete design that have been developed so far cannot directly control damage, either at the local or the global level. In order to develop an integrated scheme for direct damage control during design and study its application in practice, a new design philosophy, named direct damage controlled design, is proposed. In spite of the generality of the presented design philosophy, this paper focuses on the beam type of structures composed of plain concrete or other quasi-brittle materials, such as masonry or ceramics, and subjected to statically applied loading. The proposed methodology appropriately combines code-based stress-strain relations with a simple expression for damage to determine with the aid of the fiber model and the finite-element method axial force and bending moments of a beam-column element as functions of deformation and/or damage. Five haracteristic numerical examples are presented to illustrate the proposed methodology and demonstrate its direct applicability to structural design