Sand blocking structure suitable for river overtopping beach area
By designing a sand-blocking structure with concrete foundations and columns in the river floodplain area and using alloy materials and hole design, the problem of the existing sand-blocking structure being easily damaged has been solved, the stability and durability of the structure have been improved, and the damage to the structure caused by wind and sand has been effectively reduced.
Patent Information
- Application Number
- CN202422624765.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-30
AI Technical Summary
The existing sand-blocking structures in river floodplains have weak foundations and poor structural strength, and are unable to effectively resist the damage of water flow and wind and sand, making the structures easily destroyed, collapsed or buried.
A sand-blocking structure consisting of a concrete foundation and columns was designed. Sand-trapping boards were installed inside the columns and fixed to the columns through alloy anchor nails. The sand-trapping boards were made of galvanized iron sheets and had holes in different positions to optimize wind and sand management. The columns and sand-trapping boards were made of alloy materials to improve their resistance to wind, floods, and sand abrasion.
It improves the stability and durability of the sand-blocking structure, can effectively reduce the impact of wind speed and sand, prevent the structure from being damaged, enhances the ability to resist wind, floods, and sand abrasion, and the structural design helps sand accumulate in front of the barrier, reducing wind speed and flow rate.
Smart Images
Figure CN223317105U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sand damage control, and in particular relates to a sand blocking structure suitable for river floodplain areas. Background Art
[0002] Part of the Southern Xinjiang Railway runs through a floodplain area with piedmont and alluvial slopes. This section of the line is prone to surface flooding during the rainy season, and Gobi sandstorms wreak havoc in winter and spring, causing frequent flooding and sand damage to the railway subgrade. Along the Qinghai-Tibet Railway, rivers like the Hongliang, Xiushui, Beilu, and Basuo Rivers dry up in winter and spring, and strong winds carry accumulated sand from the riverbeds, causing sand damage to the railway subgrade.
[0003] Existing sand-blocking structures in river areas have weak foundations and poor structural strength, making them unable to withstand the destructive force of water flows. These structures suffer varying degrees of damage, even collapsing, being washed away, and even buried. Therefore, to effectively address the sand damage associated with railways in river floodplains, there is an urgent need to develop a sand-blocking structure suitable for river floodplains. Utility Model Content
[0004] In order to make up for the deficiencies of the prior art, the utility model provides a sand-blocking structure suitable for river floodplain areas, which has a stable foundation, high strength and good durability.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:
[0006] A sand barrier structure suitable for river floodplains, comprising a concrete foundation, wherein a column is arranged in the concrete foundation, wherein the column comprises a vertical section and an inclined section, wherein the inclined section is arranged on the windward side;
[0007] Sand retaining plates are provided between the columns, and the sand retaining plates have the same shape as the columns;
[0008] Angle steel outer frames are fixed at the bottom, top and bending positions of the sand retaining plate, and the angle steel outer frames are fixedly connected to the columns.
[0009] Furthermore, the sand retaining plate includes a vertical section and an inclined section, a strip hole is provided at the bottom of the vertical section, and circular holes are provided in the upper middle portion of the vertical section and the inclined section.
[0010] Furthermore, the sand retaining plate and the angle steel outer frame, as well as the angle steel outer frame and the column are all fixed with alloy anchor nails.
[0011] Furthermore, the angle steel outer frame is made of bent angle steel.
[0012] Furthermore, the diameter of the circular hole on the sand retaining plate is 60 mm.
[0013] Furthermore, the strip holes on the sand retaining plate are 80 mm × 8 mm.
[0014] Beneficial effects of the utility model:
[0015] 1) The columns of the utility model are placed in the concrete foundation, which is stable and more suitable for river floodplain areas;
[0016] 2) The columns of this utility model are made of alloy square columns, and the sand barrier is made of galvanized iron sheets with angle steel skeletons. It has strong wind resistance, flood resistance, and sand abrasion resistance. It can withstand wind pressure, tearing, sand abrasion, and water impact damage and immersion damage.
[0017] 3) The utility model can reduce the wind speed, and some sand particles accumulate in the range of 20 to 30 meters in front of the barrier; the sand particles with a larger flow rate move upward and finally fall against the wind through the top inclined surface, so that the sand particles are mainly accumulated in front of the barrier. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the sand retaining plate of the utility model. DETAILED DESCRIPTION
[0020] The present invention will be described in detail below with reference to specific implementation methods.
[0021] like Figure 1 、 2 As shown, the utility model includes a concrete foundation, which is cast in situ. The foundation spacing, cross-sectional dimensions, and burial depth are determined in combination with the freezing depth, scouring depth, and stability of the superstructure. If necessary, a reinforced concrete pile foundation can also be used.
[0022] There are columns in the concrete foundation, which include vertical and inclined sections, and the inclined section is set on the windward side; sand retaining boards are set between the columns, and the sand retaining boards have the same shape as the columns, and include vertical and inclined sections; the columns are hollow alloy square columns with a length of 100mm, a wall thickness of 50mm, a spacing of <3.0m, and a height of <2.5m; the sand retaining boards and the angle steel outer frame, as well as the angle steel outer frame and the columns are fixed with alloy anchor nails, and the angle steel outer frame is made of bent angle steel.
[0023] The sand barrier is made of galvanized iron sheets, and angle steel frames are fixed at the bottom, top and bend positions of the sand barrier. It has strong wind resistance, flood resistance and sand abrasion resistance. It can withstand wind pressure, tearing and sand abrasion, as well as water impact damage and immersion damage. It also overcomes the aging defects of reed fences, geonet fences and other fences.
[0024] The sand barrier is 1.2mm thick and consists of a vertical section and an inclined section. Strip holes are provided at the bottom of the vertical section, and circular holes are provided in the upper middle of the vertical section and the inclined section. The circular holes on the sand barrier are 60mm in diameter, and the strip holes are 80mm x 8mm. They are evenly distributed across the board, achieving a 25% air permeability. The inclined section is bent 30° toward the windward side to block sand particles and allow them to fall in front of the sand barrier. The circular and strip holes can reduce wind and water pressure on the structure, contributing to its stability. This also reduces the overall weight of the sand barrier, maintaining its necessary strength and stability.
[0025] Both the circular holes at the top and the strip-shaped holes at the bottom help optimize the flow of wind and sand. The circular holes reduce wind speed and promote eddy sedimentation of wind-blown sand. The strip-shaped holes block larger particles while effectively directing water flow, reducing its direct impact on the sand barrier. This design achieves different wind and sand management effects at different heights. Wind speed increases with height above the ground, resulting in higher wind pressure at the top of the sand barrier and lower pressure at the bottom. Since circular holes are evenly stressed, square holes are unevenly stressed. Therefore, by placing holes of different shapes at different locations on the sand barrier, we achieve both ventilation and water permeability while adapting to the stress conditions at different locations, helping to improve structural strength.
[0026] The construction method of this utility model is as follows:
[0027] Step 1: Construct the structural concrete foundation. Use mechanical drilling when manual excavation is difficult.
[0028] Step 2: Install the column, place the lower part in the concrete foundation, and use flange connection if necessary;
[0029] Step 3: Install the angle steel on the leeward side of the sand barrier structure and fix it to the column with alloy anchor nails;
[0030] Step 4: Install the sand barrier;
[0031] Step 5: After galvanizing, the exposed surface of the sand-blocking structure is sprayed with a green resin protective film.
[0032] In the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0033] The content of the present invention is not limited to the embodiments listed. Any equivalent transformation of the technical solution of the present invention made by ordinary technicians in this field after reading the description of the present invention is covered by the claims of the present invention.
Claims
1. A sand barrier structure suitable for river floodplains, characterized by: It comprises a concrete foundation, wherein a column is arranged in the concrete foundation, wherein the column comprises a vertical section and an inclined section, and the inclined section is arranged on the windward side; Sand retaining plates are provided between the columns, and the sand retaining plates have the same shape as the columns; Angle steel outer frames are fixed at the bottom, top and bending positions of the sand retaining plate, and the angle steel outer frames are fixedly connected to the columns.
2. The sand barrier structure suitable for river floodplain areas according to claim 1, characterized in that: The sand retaining plate comprises a vertical section and an inclined section, wherein a strip hole is arranged at the bottom of the vertical section, and circular holes are arranged at the upper middle part of the vertical section and the inclined section.
3. The sand barrier structure suitable for river floodplain areas according to claim 2, characterized in that: The sand retaining plate and the angle steel outer frame, as well as the angle steel outer frame and the column are all fixed with alloy anchor nails.
4. The sand barrier structure suitable for river floodplain areas according to claim 3, characterized in that: The angle steel outer frame is made of bent angle steel.
5. The sand barrier structure suitable for river floodplain areas according to claim 4, characterized in that: The diameter of the circular hole on the sand retaining plate is 60 mm.
6. The sand barrier structure suitable for river floodplain areas according to claim 5, characterized in that: The strip holes on the sand retaining plate are 80 mm × 8 mm.