Issue 30

C. Yunyu, Frattura ed Integrità Strutturale, 30 (2014) 545-551; DOI: 10.3221/IGF-ESIS.30.65 545 An analysis research of the stiffness characteristics of hospital building materials Chen Yunyu The First Affiliated Hospital of Wenzhou Medical University, 325000, China cyy@hosp1.ac.cn A BSTRACT . This paper primarily aims to introduce different stiffness ratio requirements for hospital buildings of various structural styles, to achieve a new standard. The requirements of each stiffness ratio are analyzed, according to the specification formulas and illustrations. And whether the structural deformation situation complies with the code requirement or dissatisfies the specification requests can be intuitively reflected through the application of the chart form, respectively. The corresponding measures complying with the code requirement and the matters needing attention in the schematic design phase are proposed. The comparison analysis for the lateral rigidity and lateral stiffness ratios is performed by applying different methods for the project cases of shear wall, frame tube and partial frame shear wall structures. The proposed computing method may better reflect the stiffness characteristics of the component’s cross-section, with regard to vertical layer, storey height and materials, as well as the actual situation of the turning constraint on both ends. The result thus determined can better reflect the real lateral rigidity of the construction, which is available as a benchmark for engineers designing hospital building structures. K EYWORDS . Hospital building; Stiffness properties; Material. I NTRODUCTION tiffness and strength are two basic concepts in structural design work. Strength reflects the load resistance ability of a structural component, while stiffness reflects its ability to resist transformation. Previously, when designing ordinary and non-seismic multilayer reinforced concrete and brick structures, the component strength requirement was generally emphasized, while the rigidity requirement was ignored. But in the case of hospital building the horizontal load has become the control factor, due to its high altitude and to the fact that it has to bear a relatively high horizontal load (wind load and earthquake action), thus the horizontal load has become the control factor, and its ability to resist deformation under a horizontal load, namely, overall lateral stiffness, has become an important indicator of design control. Rigidity not only influences structural deformation, but also exerts great effect on the load-carrying capacity of structural components [1]. Structures with high stiffness feature limited deformation and a large load-carrying capacity, while structures with low stiffness feature significant deformation and a small load-carrying capacity. Thus, the ability to better control the stiffness of the whole structure and the relative rigidity of its components is a prerequisite for determining whether the building’s structural system is safe, economic and reasonable [2]. M ATERIALS AND METHODS t present, the rigidity of the later layers of hospital building structures is usually measured with the following formula: S A