Design guidelines for safe construction of concrete buildings
Abstract
This study consists of four parts: (1) design considerations; (2) analysis method of load effects; (3) general design guidelines; and (4) safety analysis and inspection during construction. In part 1, the research significance and literature review in the field of safe construction of concrete buildings are introduced. The design policy and method for safe construction are then explained. The models for specified construction dead and live loads are established briefly. The resistance capacity for shear and flexural failures of concrete slabs at early age and in different temperatures is evaluated. In the first section of part 2, an improved simplified analysis method for the distribution of slab and shore loads in multilevel supporting systems during construction of concrete buildings is developed. The method considers the effect of elastic shortening of shores on the load distribution in a simple manner and treats the simplified method as a special case. The second section in part two pertains to the creep and shrinkage effects on slab shore load. This research investigates the creep and shrinkage influence on the slab-shore loads using the method of creep rate which is verified against field measurements. The third section in part 2 discusses the effects of nonuniform and impact loading on slab shore loads during concrete placement and shore removal. The effects of nonuniform loading and impact load on shore loads for multi-level shoring systems supported on slabs and rigid ground during concrete placement are studied. Live load in construction is evaluated to improve design method. A general design guideline is developed to guide safe construction in part 3. The procedures for checking slab safety and determining specified design load for form work design are given. Part 4 develops decision-making methods for structural reliability during construction considering total cost and safety requirements by society. The relationships between safety of construction and temporary structures and between safety of temporary structures and slab-formwork are established. The construction inspection list for safety and quality is suggested in the final.
Degree
Ph.D.
Advisors
Chen, Purdue University.
Subject Area
Civil engineering|Architecture
Off-Campus Purdue Users:
To access this dissertation, please log in to our
proxy server.