SAP2000 V15对于中国用户的最重要改进是更新至国内最新的结构设计规范，包括目前已近发布实施的《混凝土结构设计规范（GB50010-2010）》、《建筑抗震设计规范（GB50011-2010）》、《高层建筑混凝土结构技术规程（JGJ3-2010）》三本规范的相关内容。相应地，程序对于地震荷载、荷载组合、材料特性、混凝土框架设计和钢框架设计等内容都按照新规范的规定进行更新。此外，SAP2000 V15自身的增强特性及其它国家规范的更新内容列举如下：
图形用户界面新增选项卡式窗口
新的DirectX graphics
显示和输出框架截面应力
荷载优化功能，以确定最佳的荷载比例，实现整个结构的位移和力响应的
目标和限制
内置欧洲混凝土和钢的材料特性
加拿大NBCC风、地震、反应谱荷载
美国ASCE-7风、地震、反应谱荷载
意大利NTC2008带有地理数据库的反应谱函数
印度钢框架结构设计规范 IS 800 2008
新西兰钢框架结构设计规范 NZS 3404-1997
加拿大钢框架结构设计规范 CSA S16-2009
更新香港混凝土框架结构设计规范包含 Supplement 1
澳大利亚混凝土框架结构设计规范 AS3600- 2009
增强欧洲规范3-2005钢框架结构设计，包括Class 4截面设计
欧洲规范2-2004混凝土框架结构设计的国家附件，新加坡，德国，和葡萄牙
混杂钢框架截面属性
简单的钢筋弧线轮廓定义
更新API功能
导入StruCAD*3D设计参数和波浪加速加载
桥梁模块被移至带有扩展功能特性的产品CSiBridge，仍保留基本的移动荷
载分析。
其它一些小改进
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AP2000 is general-purpose civil-engineering software ideal for the analysis and design of any type of structural system. Basic and advanced systems, ranging from 2D to 3D, of simple geometry to complex, may be modeled, analyzed, designed, and optimized using a practical and intuitive object-based modeling environment that simplifies and streamlines the engineering process.
The SAPFire Analysis Engine integral to SAP2000 drives a sophisticated finite-element analysis procedure. An additional suite of advanced analysis features are available to users engaging state-of-the-art practice with nonlinear and dynamic consideration. Created by engineers for effective engineering, SAP2000 is the ideal software tool for users of any experience level, designing any structural system.
Integrated modeling templates, code-based loading assignments, advanced analysis options, design-optimization procedures, and customizable output reports all coordinate across a powerful platform to make SAP2000 especially useful for practicing professionals.
SAP2000 is also an excellent medium for education. Open SAP2000 and follow the CSI Watch & Learn video series to receive not only instruction on software use, but also insight into structural engineering philosophy and practice.
SAP2000 15.2.1 Enhancements:
– The memory capacity has been increased for the graphical user interface, allowing larger models to be handled.
– The analysis of certain non?symmetrical frame sections now accounts for coupled bending due to the product of inertia, I23, and for the coupling between major shear (V2) and torsion when the shear center is not located at the centroid of the section. Steel frame design and cold?formed frame design are not affected except as may due to changes in analysis results. Steel frame design was already accounting for the rotated principal axes of bending for angle sections as documented for the various codes.
– The number of time steps that can be run in a single linear or nonlinear (FNA) modal time?history load case has been increased for cases with a large number of link elements.
– Italian material property definitions have been added.
– Steel frame design using the “AS4100?1998” and “NZS 3404?1997” codes have been enhanced to provide more design details.
– Mass participation ratios for the rotational acceleration loads (RX, RY,and RZ) have been changed so that they are now reported with respect to the centroid of the structure. Previously they were reported with respect to the global origin.
– The import of StruCAD*3D models has been enhanced to allow the import of the Cb, Cm, and unbraced?length design overwrites.
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