Abstract
The article deals with the creation of continuous metal and monolithic reinforced concrete bridge spans, which are the most effective. Efficiency is achieved by finding opportunities for the unification of structures with the most successful options for providing them with the required load-bearing capacity with the lowest cost of building materials. The bending moments that occur in the sections of a continuous structure are distributed more evenly and take on smaller values in the span than in a split structure. However, the efficiency of continuous structures can be further improved by introducing a certain coefficient of the length of the extreme spans of the bridge relative to the average ones. This allows you to achieve equality of the reference or span bending moments. As a result, the design will work in such a way that it will be possible to build the bridge span as if from three types of unified blocks, which will reduce the complexity and cost of construction work. As an example, in this case, the ratio of spans and the corresponding division into blocks for four-span continuous bridges are determined.
Highlights
Optimal ratio of spans of continuous bridgesAleksander Makarov1, Sergey Kalinovsky2*, Natalia Ermilova3 and Alexey Churakov 4 1 Volgograd State Technical University, Construction and operation of transport facilities Department, 400074 Volgograd, Russian Federation 2 Volgograd State Technical University, Hydraulic and earth structures Department, 400074 Volgograd, Russian Federation 3 Volgograd State Technical University, Engineering Graphics, Standardization and Metrology Department, 400074 Volgograd, Russian Federation 4 Volgograd State Technical University, Building Structures, Foundations and Reliability of Structures Department, 400074 Volgograd, Russian Federation
It is known that a continuous static circuit in comparison with a split circuit has a number of advantages
The use of continuous structural schemes makes it possible to increase the length of bridge spans
Summary
Aleksander Makarov1, Sergey Kalinovsky2*, Natalia Ermilova3 and Alexey Churakov 4 1 Volgograd State Technical University, Construction and operation of transport facilities Department, 400074 Volgograd, Russian Federation 2 Volgograd State Technical University, Hydraulic and earth structures Department, 400074 Volgograd, Russian Federation 3 Volgograd State Technical University, Engineering Graphics, Standardization and Metrology Department, 400074 Volgograd, Russian Federation 4 Volgograd State Technical University, Building Structures, Foundations and Reliability of Structures Department, 400074 Volgograd, Russian Federation
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