Proposals for the construction of overpass structures and transport hubs for the high-speed highway in St. Petersburg

Abstract

Background: As part of student research at St. Petersburg architectural-construction University continues to develop alternative proposals for the creation of a circumferential highway at the boundaries of communication areas of St. Petersburg and Leningrad region. The article presents the results of research works on optimization of routing highways, according to the architectural layout of buildings, transport hubs, to study the effects the pre-tension of the puffs and the guys at the reduction of efforts and deformations of the main elements of the highway, the calculations of the designs of the most high and loaded sea area. The construction of the 8-high-speed transport highway was upgraded due to restrictions related to the reconstruction of Levashovo and Pulkovo airports, the transfer of the capital of the Leningrad region to Gatchina, and linking to the promising metro stations Strelna, Yanino and Kudrovo. The upgraded scheme of the highway is proposed in the form of an open polygon with transport and interchange nodes in the corners and is based on load-bearing trestle structures of arched-cable design that provide the necessary functionality, reliability and safety. Aim: development of a district high-speed transport system on the borders of St. Petersburg and the Leningrad region, based on the widespread use of electric transport, with passenger traffic comparable to the metro line. Materials and Methods: trestle structures are designed for combinations of operating loads, forces and impacts, including consideration of dynamic aspects and non-linearity, using the "SCAD Office" software package. Results: based on the results of variant design, an arch-cable-stayed version with spans of 180 m and 360 m was adopted as a supporting structure according to the metal consumption criterion, which became the basic one for building a highway of overpass design. From an approximate calculation, it follows that the cost of building a highway on land plots (two-track scheme) compared to the construction of the metro, it is expected to be 5-6 times lower, and on the sea sections 3-4 times lower due to high pylons and deep pile foundations. Conclusion: the estimated volume of passenger traffic per day for the two-track high-speed and two-track high-speed highways will be 208 thousand passengers, and 76 million passengers per year, which is quite comparable to this indicator for the metro line.