Large-scale bridge network connectivity probability evaluation method based on network decomposition

Abstract

The invention discloses a large-scale bridge network connectivity probability evaluation method based on network decomposition, and relates to a bridge network evaluation method. The method includes follwoing steps: recursively dividing the bridge network into a plurality of sub-networks connected in series by applying a multi-stage k-path division algorithm; defining adjacent components and localnetworks of sub-networks, respectively constructing adjacent matrixes, dividing sub-network states into three states of sub-network connection, sub-network disconnection but possible network connection and sub-network disconnection but integral network disconnection, calculating probability of each state, and deleting the sub-network disconnection and integral network disconnection states duringcalculation; according to the connection condition of the sub-network terminal nodes, deviding the minimum item belonging to the state that the sub-network is not connected but the whole network is possibly connected into a plurality of categories, and communicating all the terminal nodes in the sub-network with one another; and further simplifying the connection edge between the terminal node ofeach sub-network and the sub-network into a simplified network, and summing the overall connection condition of the simplified network to obtain the bridge network connection probability.

Description

technical field

[0001] The invention relates to a bridge network evaluation method, in particular to a large-scale bridge network connection probability evaluation method based on network decomposition, which belongs to the technical field of civil engineering. Background technique

[0002] As the world's largest bridge country, as of the end of 2019, the total number of road bridges in China has reached 878,300 and 60,634,600 meters. The degradation of transportation infrastructure, especially bridges, has always been the focus of research at home and abroad. However, since the efficient operation of the bridge network is crucial to ensuring the functionality and safety of the transportation infrastructure network in the region and the rational allocation of funds at the network level, compared with the status of individual bridges, in recent years, the evaluation of bridge networks has gradually become a problem. The focus of research scholars and traffic management depar...

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