|Table of Contents|

Research on non-uniform solar-induced temperature field in large-span bidirectional curved steel truss roof structure(PDF)

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

Issue:
2026年01期
Page:
209-220
Research Field:
建筑结构
Publishing date:

Info

Title:
Research on non-uniform solar-induced temperature field in large-span bidirectional curved steel truss roof structure
Author(s):
LI Jianhua1; 2;  DENG Qiang1;  LI Baoluo2;  TANG Guowang1;  FAN Jiansheng2; 3;  LIU Yufei2; 3
（1. Beijing Urban Construction Group Co., Ltd., Beijing 100084, China; 2. Department of Civil Engineering, Tsinghua University, Beijing 100084, China; 3. Key Laboratory of Civil Engineering Safety and Durability of Ministry of Education, Tsinghua University, Beijing 100084, China）
Keywords:
large-span spatial structure;  construction monitoring;  solar radiation;  sunlight shadow;  temperature field
PACS:
TU393.3
DOI:
10.19815/j.jace.2024.11075
Abstract:
In order to improve the quantification of temperature loads and the accuracy of structural configuration prediction during the construction phase of largespan bidirectional curved steel truss roof structures, and to explore the influence mechanism and calculation method of nonuniform temperature fields caused by sunlight, a numerical simulation framework for nonuniform temperature fields caused by sunlight was constructed based on the largespan bidirectional curved steel truss roof of Hefei Xinqiao International Airport Terminal. By analyzing the differential equation of thermal conductivity and the definite solution conditions, mathematical models for the second and third types of boundary conditions were established. A numerical simulation method for temperature fields that took into account geographical and meteorological elements as well as the shielding effect of structural components was developed. A monitoring system for meteorological elements and structural temperature was established to calibrate the boundary conditions of the heat conduction differential equation, and the effectiveness of the numerical simulation method was verified. The distribution and spatiotemporal characteristics of structural temperature fields under various weather types were also analyzed. The results show that after calibrating key parameters such as solar radiation absorption rate, the simulation results are in good agreement with the monitoring data. Under the influence of solar radiation, a complex shadow field is formed inside the largespan bidirectional curved steel truss roof structure, and the shielding effect of the members is significant and cannot be ignored. The spatiotemporal effect of temperature field in roof structure is very prominent, with significant differences under different weather conditions. The spatiotemporal effect of the structure is more significant on sunny days, and can be simplified as a uniform temperature load on cloudy days. The proposed numerical simulation method can accurately reflect the nonuniform temperature field of sunlight during the structural construction stage, providing reliable guidance for structural assembly and closure, construction scheme optimization, and configuration accuracy control.

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Last Update: 2026-01-20