PKPM结构设计参数设定(国外英文资料).docVIP

PKPM结构设计参数设定(国外英文资料) PKPM structural design parameters set. Txt48 smile, is a green spring, which is the hot sun shade of the hungry one, is a breeze of early autumn, winters a bonfire. Face it with a smile and you will feel the warmth of your life. This article introduces the calculation software of PKPM TAT, SATWE and PMSAP change between the new and old standard version, this is also the old and new specification (seismic code, high-level discipline, load, concrete provision which changes. 1, the wind load The formula for wind pressure standard is: WK = beta z mu s mu z W. Among them: beta z = 1 + factor nu phi z/mu z in the new specification, settlement basic wind pressure increased slightly, while building increases variation coefficient E, pulsating wind pressure height coefficient is deduced, the ripple effect coefficient nu is reduced. As a result, the standard of wind pressure in the new specification may be larger than the 89 specification and may be smaller than the 89 specification. Specific changes include the following: 1) and basic wind pressure: the new load specification changes the basic values of the wind load from the original 30 years to 50 years: Rule 3.2.2: for high-rise buildings or particularly important high-rise buildings of type B height, the wind pressure should be at least 100 years Value is used. 2) the ground roughness category: the original A, B, and C classes, and A, B, C, D. C refers to urban areas with dense buildings; Class D is a city with dense buildings and high housing. 3) the coefficient of high pressure variation of the phoenix pressure: A, B, C, the variation coefficient of wind pressure is adjusted slightly. The newly added D classes have the least variation of wind pressure, 20 to 50 percent less than the C class 4) the coefficients of pulse increase: A, B, and C are adjusted slightly. The newly added D class corresponds to a smaller ripple increase than the 89 specification, which is about 5 to 10 percent smaller. It