详情

原文传递 COMPUTERIZED OVERLOAD PERMITTING PROCEDURE FOR INDIANA.

题名：	COMPUTERIZED OVERLOAD PERMITTING PROCEDURE FOR INDIANA.
作者：	Zaghloul-SM; White-TD; Ramirez-JA; White-DW; Prasad-NBR
关键词：	PERMITS-; OVERLOADS-; INDIANA-; PAVEMENTS-; BRIDGES-; STATISTICAL-MODELS; FINITE-ELEMENT-ANALYSIS; SOFTWARE-; TRUCK-PAVEMENT-DAMAGE; TRUCK-EFFECTS-BRIDGES; DAMAGE-ANALYSIS
摘要：	Truck weight regulations are used to control the rate of damage accumulation for pavements and bridges. Permitting heavier loads can increase the rate at which pavement damage and bridge deterioration accumulate and the costs of maintenance. Truck weight limits have always been controversial. Each state has legal truck weight limits. In many cases, trucks carrying weights higher than legal limits need to use the highway system and a special overload permit is required. A study conducted at Purdue University and funded by the Indiana Department of Transportation and FHWA developed an enhanced procedure for permitting overloaded trucks in Indiana. The procedure evaluates damage effects of overloaded trucks for pavements and bridges. Both pavement and bridge analyses use statistical models developed especially for this study. The pavement statistical models are based on a three-dimensional, nonlinear dynamic finite-element analysis of rigid, flexible, and composite pavements. Repeated axle loads moving at different speeds are considered, and realistic material models, such as viscoelastic and elastic-plastic models, are used for pavement materials and subgrades. The bridge statistical models are based on analysis using the AASHTO Bridge Analysis and Rating System and selected samples of bridges and overloaded trucks. User-friendly computer software was developed to implement this enhanced procedure, which allows the user to run damage analysis for overloaded trucks at the network level (e.g., route-independent analysis) as well as at the project level for specific pavement or bridge structures. Three options are available at both project levels: to check for pavements only, to check for bridges only, or to check for both, the default option. At the project level, the user is permitted to enter all cross-section and load parameters. Typical default values are provided for material properties.
总页数：	Transportation Research Record. 1994. (1448) pp40-52 (11 Fig., 3 Tab., 18 Ref.)
报告类型：	科技报告