|Table of Contents|

Study on Wind Pressure of Outer Convex Rectangular High-rise Building(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2019年06期
Page:
72-79
Research Field:
Publishing date:

Info

Title:
Study on Wind Pressure of Outer Convex Rectangular High-rise Building
Author(s):
HE Han-xin1;  ZHANG Liang-liang2;  YANG Peng-rui3;  GAO Liang4
(1. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China; 2. Shanxi Transportation Research Institute Co., Ltd., Taiyuan 030006, Shanxi, China; 3. Engineering Research Center of Highway Large Scale Structure Ministry of Education Safety, Chang'an University, Xi'an 710064, Shaanxi, China; 4. School of Civil Engineering and Architecture, Xi'an University of Technology, Xi'an 710048, Shaanxi, China)
Keywords:
outer convex high-rise building;  shape coefficient;  wind tunnel test;  numerical simulation
PACS:
TU317.1
DOI:
-
Abstract:
In view of the complex shape of the external convex rectangular high-rise building structure and the fact that its wind load value cannot be directly obtained through the building load code, the external convex rectangular high-rise building of Silk Load World Trade Center was taken as study object, and its wind load value was obtained through wind tunnel test. The wind load law of the external convex rectangular building structure was summarized through comparing the test value of the shape coefficient of rectangular structure with the value given by the code. Based on Fluent software, different turbulence models were selected to simulate the convex rectangular high-rise building, and the results were compared with the wind tunnel test results to verify the feasibility of the numerical simulation method. The results show that the shape coefficient of the windward side of the high-rise building is close to the standard. The shape coefficient of the leeward bottom area is about 70% higher than the standard value, and other areas are close to the standard value. The shape coefficient of the side is higher than the standard value, and the maximum negative pressure appears on the side. For the convex rectangular high-rise building structure, the wind pressure of the convex structure is higher than that of the adjacent area, and the wind pressure of the concave structure is lower than that of the convex structure. The shape coefficient changes greatly along the height direction. When the protruding structure is windward, the shape coefficient of the adjacent area below it is nearly 50% smaller than the standard value; the numerical calculation results are basically consistent with the overall trend of the test data; the numerical simulation results of Reliable k-ε model are better than that of Standard k-ε Model. For rectangular high-rise buildings, when the protruding structure is windward, the wind load of adjacent upper area and lower area of leeward surface is not only affected by the protruding structure, but also by the width of the protruding structure, and its influence range on the shape coefficient is ±20%.

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Last Update: 2019-11-26