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Structural style layout method for efficient wave attenuating system of navigable tunnel

A layout method and system structure technology, applied in water conservancy projects, artificial waterways, sea area engineering, etc., can solve problems such as the layout of conventional wave-absorbing measures, the stability of cross-sectional scale structures, the impossibility of large economic rationality, and the impact on ship traffic. , to achieve high wave-breaking efficiency, improve wave-breaking efficiency, and high general reference

Pending Publication Date: 2019-02-05
NANJING HYDRAULIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The navigable tunnel is a typical shallow-water restrictive channel, and its cross-sectional scale cannot be large in terms of structural stability and economic rationality. In addition, because the ship’s navigation direction is consistent with the long-wave motion direction in the tunnel channel, it is impossible to move in the long-wave Large-scale and complex conventional wave-absorbing measures are arranged on the vertical surface, otherwise it will affect the passage of ships. At the same time, ships navigating at any position in the middle channel will disturb the water body in the middle channel and generate new wave sources. Design presents great challenges

Method used

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  • Structural style layout method for efficient wave attenuating system of navigable tunnel
  • Structural style layout method for efficient wave attenuating system of navigable tunnel
  • Structural style layout method for efficient wave attenuating system of navigable tunnel

Examples

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Effect test

Embodiment 1

[0034] A long-distance navigable tunnel 1 is preliminarily determined according to the physical model test that its cross-section type is a city gate type. The net width of the tunnel channel is 18m, the designed ship width is 10.8m, and the design maximum speed is 3.0m / s. There are 1m wide sidewalk 2. According to the tunnel design train of thought proposed by the present invention, the arrangement is optimized and improved as follows:

[0035] 1) Adjust the solid structure below the sidewalk 2 to a beam-slab structure, set up load-bearing columns 3, and increase the space of the lower water area, thereby increasing the section coefficient (from 3.38 to 3.75) and improving water flow conditions;

[0036] 2) Use the space under the sidewalks 2 on both sides to arrange the wave-absorbing system. According to the calculation of formula (2), it can be seen that the maximum interval between the wave-absorbing systems is 19.5m;

[0037] 3) Calculate according to formula (3) to obt...

Embodiment 2

[0039] The maximum navigable water head of a navigable building is high, and the water level variation is also large. It is proposed to adopt a multi-stage ship lift scheme, and the ship lifts are connected through the navigable tunnel 1 and the aqueduct. When the ship is navigating in the navigable tunnel 1, the long wave of water flow caused by the operation of the water body will oscillate back and forth in the channel, resulting in unfavorable phenomena such as increased sinking of the ship, which will affect the safety of the ship's navigation and docking of the cabin. Due to the fluctuating water flow conditions in the tunnel and the ship box, shortening the docking of the ship box and the sailing time of the ship has major economic and social benefits.

[0040] The navigable tunnel 1 is 16m wide, and two sidewalks are reserved on both sides, 2m wide. The designed ship width is also 10.8m, and the designed water depth of the navigable tunnel 1 is 4.0m. The optimization i...

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Abstract

The invention discloses a structural style layout method for an efficient wave attenuating system of a navigable tunnel. The structural style layout method comprises the following steps of: arrangingthe tunnel wave attenuating system in a water area, in which a ship cannot navigate, below sidewalks at the two sides, in the navigable tunnel; adopting concrete slab structures for the sidewalks, andarranging bearing stand columns at equal interval below the concrete slab structures; arranging wave attenuating transverse plates or wave attenuating plate walls among the bearing stand columns andtunnel side walls, wherein the transverse plates are perpendicular to the bearing stand columns, and the wave attenuating plates and the bearing stand columns co-define the tunnel wave attenuating system; and adopting anti-corrosion concrete or steel plate structures for the wave attenuating transverse plates, wherein height of the wave attenuating transverse plates is not smaller than a water fluctuation range in the navigable tunnel. The structural style layout method has the advantages that: extra field space does not need to additionally increase, wave attenuating efficiency is relativelyhigh, different wave attenuating plate styles can be selected, and general reference is high.

Description

technical field [0001] The invention discloses a method for arranging the structural type of a high-efficiency wave dissipation system of a navigation tunnel, belonging to the technical field of water conservancy engineering navigation waterways. Background technique [0002] The rivers in the central and western regions of my country are mainly located in mountainous areas, with large water level drop, many beaches, steep slopes, and rapid flow. It is extremely difficult and challenging to build navigable structures under the complex conditions of mountains and valleys. The navigation tunnel can make full use of the site terrain for design and layout, and has strong adaptability. It is an effective way to solve the problem of navigable building layout in the alpine and valley areas. However, the navigation tunnel is a typical shallow water narrow channel. Increased navigation resistance, reduced speed, increased trim, worsened rudder effect, lowered maneuverability, and pos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B5/04E02B5/06E02B5/08E02B8/06
CPCE02B5/04E02B5/06E02B5/08E02B8/06
Inventor 祝龙宣国祥李中华黄岳王晓刚薛淑金英郑飞东
Owner NANJING HYDRAULIC RES INST
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