Seismic performance and cost-effectiveness of high-rise buildings with increasing concrete strength

Mwafy Aman; Hussain Nadeem; El-Sawy Khaled

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Seismic performance and cost-effectiveness of high-rise buildings with increasing concrete strength

机译：随着混凝土强度的增加，高层建筑的抗震性能和成本效益

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The relationship between the seismic performance and economics of high-rise buildings when designed to different material strengths is investigated in this paper. To represent the modern high-rise construction, five 60-story reinforced concrete buildings with varying concrete strengths, ranging from 45MPa to 110MPa, are designed and detailed to fine accuracy keeping almost equal periods of vibration. Detailed fiber-based simulation models are developed to assess the relative seismic performance of the reference structures using incremental dynamic analyses and fragility functions. It is concluded that a considerable saving in construction cost and gain in useable area are attained with increasing concrete strength. The safety margins of high-strength concrete in tall structures may exceed those of normal-strength concrete buildings, particularly at high ground motion intensity levels. The recommendations of this systematic study may help designers to arrive at cost-effective designs for high-rise buildings in earthquake-prone regions without jeopardizing safety at different performance levels. Copyright (c) 2014 John Wiley & Sons, Ltd.

机译：研究了针对不同材料强度设计的高层建筑的抗震性能与经济性之间的关系。为了代表现代高层建筑，设计并详细制作了五座60层钢筋混凝土建筑，它们的混凝土强度从45MPa到110MPa不等，精确度很高，可以保持几乎相等的振动周期。开发了详细的基于纤维的仿真模型，以使用增量动态分析和脆弱性函数评估参考结构的相对抗震性能。可以得出结论，随着混凝土强度的提高，可以节省大量的建筑成本并增加可用面积。高层建筑中高强度混凝土的安全裕度可能会超过普通强度混凝土建筑物的安全裕度，特别是在高地面运动强度水平下。这项系统研究的建议可以帮助设计人员在地震多发地区获得高成本效益的高层建筑设计，而不会损害不同性能水平的安全性。版权所有（c）2014 John Wiley＆Sons，Ltd.

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来源
《Structural Design of Tall Buildings》 |2015年第4期|257-279|共23页
作者
Mwafy Aman; Hussain Nadeem; El-Sawy Khaled;
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作者单位

United Arab Emirates Univ, Al Ain, U Arab Emirates;

United Arab Emirates Univ, Al Ain, U Arab Emirates;

United Arab Emirates Univ, Al Ain, U Arab Emirates;

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原文格式 PDF
正文语种 eng
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high-strength concrete; high-rise buildings; cost effectiveness; seismic performance; incremental dynamic analysis;

机译：高强度混凝土;高层建筑;成本效益;抗震性能;增量动力分析;

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3. Seismic performance of steel and concrete composite shear walls with embedded steel truss for use in high-rise buildings [J] . Wu Yun-tian, Kang Dao-yang, Yang Yeong-Bin Engineering Structures . 2016,第octa15期

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4. Evaluation of Seismic Resistant Capacity of Existent High-Rise Buildings under Severe Earthquakes (Part 3. Deterioration Behavior of High-Rise Steel and Concrete Filled Steel Tubular Buildings) [C] . BAI Yongtao, EGASHIRA Shoichi, HAYASHI Kouhei, 日本建築学会大会;日本建築学会 . 2013

机译：严重地震下既有高层建筑的抗震能力评估（第3部分。高层钢和钢管混凝土建筑物的劣化行为）
5. Seismic Tensile Force on Steel Girder-Concrete Wall Connections in High-Rise Composite Building Structures [D] . Hui, Yuchen. 2018

机译：高层复合建筑结构中钢梁-混凝土墙连接处的地震拉力
6. Mechanical Properties and Seismic Performance of Wood-Concrete Composite Blocks for Building Construction [O] . David Dominguez-Santos, Daniel Mora-Melia, Gonzalo Pincheira-Orellana, 2019

机译：建筑用木混凝土复合砌块的力学性能和抗震性能
7. Mechanical properties of various concrete after high temperature exposure Mechanical property of various types of concrete after high temperature exposure is investigated. Considering compressive strength requirement for a vertical element in high rise building, concrete specimens with various design strengths of 35, 80, 100, and 150 MPa were tested. Particularly, the influence of incorporated steel fiber on fire resistance is of interest in this study. Experimental results show that the fire resistance depends on the design strength and steel fiber content. Normal strength concrete (NSC) of a design strength of 35 MPa or high performance concrete (HPC) of 80-100 MPa does not spall when exposed to 100-400 °C of temperature. However, an explosive spalling occurs at 300 °C when the HPCs contain 1 vol. of steel fiber. Ultra-high performance concrete (UHPC) of a design strength of 150 MPa and 1.5 vol. of steel fiber also shows dramatic spalling at 300 °C. The experimental results found in this study can contribute to a better understanding of the behaviors of HPC and UHPC under fire and the role of steel fiber on the fire resistance. [O] . 2017

机译：研究了高温暴露后各种混凝土高温曝光机械性能各种混凝土的机械性能。考虑到高层建筑中垂直元件的抗压强度要求，测试了35,80,100和150MPa各种设计强度的混凝土试样。特别是，在这项研究中，掺入钢纤维对耐火性的影响。实验结果表明，耐火性取决于设计强度和钢纤维含量。在暴露于100-400°C的温度时，80-100MPa的设计强度为35MPa或高性能混凝土（HPC）的正常强度混凝土（NSC）不会击落。然而，当HPC含有1体积的钢纤维的百分比时，爆炸性剥落发生在300℃。超高性能混凝土（UHPC）的设计强度为150 MPa和1.5 Vol。钢纤维的百分比也显示出300℃的剧烈剥落。本研究中发现的实验结果可以有助于更好地了解在火灾中的HPC和UHPC的行为以及钢纤维对耐火性的作用。

Seismic performance and cost-effectiveness of high-rise buildings with increasing concrete strength

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