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A kind of ventilation method of all-weather bridge passage

A ventilation method and all-weather technology, applied to bridges, bridge construction, bridge parts, etc., to achieve the effect of saving construction period, reducing project cost and improving utilization rate

Active Publication Date: 2022-04-26
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current domestic research on cross-sea all-weather bridge passages is still mainly focused on the selection of bridge types and spans, and the research on the ventilation of cross-sea all-weather bridge passages is still blank at home and abroad

Method used

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  • A kind of ventilation method of all-weather bridge passage
  • A kind of ventilation method of all-weather bridge passage
  • A kind of ventilation method of all-weather bridge passage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] The length of the cross-sea all-weather bridge channel is 127km, of which the main span is a suspension bridge with a span of 3500m, and the other parts are other bridge forms. / h, in order to ensure a good ventilation and smoke exhaust effect under normal operation and fire conditions, the full horizontal ventilation method in the mechanical ventilation is selected for ventilation.

[0095] When the all-weather cross-sea bridge passage adopts the full horizontal ventilation method, air supply holes and exhaust holes are respectively arranged at the lower and upper positions of the all-weather bridge passage, and the blower is directly installed at the position of the air supply hole, and the blower is directly installed at the position of the exhaust hole, so as to realize the ventilation in the passage. The polluted air smoke dust is exchanged with the fresh air outside. Mainly consider the influence of the position of the air supply and exhaust holes, the distance be...

Embodiment 2

[0118] The length of the cross-sea all-weather bridge channel is 3km. The bridge is two-way ten-lane. There are two rooms in the bridge box girder for one-way traffic respectively. The traffic volume is 2090veh / h. In order to ensure the ventilation and smoke exhaust effect under normal operation and fire Good, choose semi-horizontal ventilation in mechanical ventilation for ventilation.

[0119] When the all-weather cross-sea bridge passage adopts the air supply semi-transverse ventilation method, because the length of the all-weather bridge passage across the sea is long, only 100m of the bridge passage is taken as the calculation length in the calculation, and a three-dimensional geometric model is established for calculation. In the all-weather bridge passage The air supply hole is arranged at the lower part, and the blower fan is directly installed at the position of the air supply hole to realize the exchange of polluted air dust in the channel with fresh air from the outs...

Embodiment 3

[0140] When the all-weather sea-crossing bridge passage adopts the air supply semi-horizontal + exhaust shaft ventilation method, air supply holes are arranged at the lower part of the all-weather bridge passage, and blowers are directly installed at the air supply holes to send fresh air from the outside into the bridge passage. The layout parameters of the air supply holes are the same as those in Embodiment 2. When the longitudinal wind speed in the channel is required to be greater than 10m / s, an exhaust shaft or an exhaust hole is provided. as follows

[0141] When the bridge type of the all-weather sea-crossing bridge is a suspension bridge or a cable-stayed bridge, it is considered to install a fan room and an exhaust shaft inside the bridge tower to discharge the polluted air and dust in the passage to the outside of the all-weather sea-crossing bridge passage.

[0142] When the bridge type of the all-weather sea-crossing bridge is other than suspension bridge and cabl...

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Abstract

The invention discloses a ventilation method for an all-weather bridge channel. When the product of the channel length L and the design hourly traffic volume N of the two-way traffic cross-sea all-weather bridge channel is greater than 6×10 5 Mechanical ventilation shall be adopted when the two-way traffic cross-sea all-weather bridge channel is the product of the channel length L and the design hourly traffic volume N, which shall be less than 6×10 5 Natural ventilation is adopted; when the product of the channel length L and the design hourly traffic volume N of the one-way traffic cross-sea all-weather bridge channel is greater than 2×10 6 When using mechanical ventilation; when the product of the channel length L and the design hourly traffic volume N of the one-way traffic cross-sea all-weather bridge channel is less than 2 × 10 6 Natural ventilation is adopted when using the above ventilation methods; the above ventilation methods do not need to set up ventilation systems such as air supply ducts, exhaust ducts, large fan rooms, etc., which can not only save construction costs, save later maintenance costs and time, but also reduce offshore typhoons, rainstorms, etc. Influence of severe weather conditions on traffic in bridge passages.

Description

technical field [0001] The invention belongs to the technical field of bridge equipment, and in particular relates to a ventilation method for all-weather bridge passages. Background technique [0002] With the strengthening of my country's national comprehensive strength and the continuous improvement of engineering construction technology, my country's transportation infrastructure construction has achieved rapid development, and the construction of passages with great economic and social significance across the strait, such as the Taiwan Strait passage, the Qiongzhou Strait passage, and the Bohai Strait passage. rising day by day. In particular, the construction of the Taiwan Strait channel is not only conducive to strengthening the connection between various parts of our country, driving economic development along the route, and promoting the great development of the national economy. The cross-sea all-weather bridge passage scheme is to ensure that vehicles can pass saf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/00E01D2/04
CPCE01D19/00E01D2/04
Inventor 韩兴博夏永旭张卜
Owner CHANGAN UNIV
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