Anti-frost heave protection structure and construction method of embankment

A technology of protective structure and construction method, which is applied in dikes, dams, sea area engineering, etc., can solve the problems of consuming a lot of manpower, material resources and time, the effect of maintenance is not obvious, and the time lag of repair, etc., to achieve convenient maintenance and cleaning, The effect of solving high maintenance costs and reducing the degree of extrusion damage

Active Publication Date: 2021-09-28
NANJING HYDRAULIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the influence of static ice pressure of ice and frost heaving force of soil, dam slope protection and other hydraulic structures are often easily damaged, and the concrete slab is squeezed and fractured, thus affecting the function of the dam itself
[0003] The concrete structure is crushed and damaged by ice thrust, and needs to be repaired in time, but the maintenance cost is high and the management is inconvenient
Moreover, there is a lag in the repair time, and the construction requires a lot of manpower, material resources and time, and the effect of maintenance is not obvious

Method used

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  • Anti-frost heave protection structure and construction method of embankment
  • Anti-frost heave protection structure and construction method of embankment
  • Anti-frost heave protection structure and construction method of embankment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Such as Figure 9 , 10 As shown, a dam anti-frost heaving protective structure includes several protective plates 3, and several protective plates are arranged on the water-facing side in sequence along the length direction of the dam, and there are gaps between adjacent two protective plates to form expansion joints 10; each Anchor holes are opened on each of the protective plates, and each protective plate is fixed on the slope of the embankment by inserting anchor rods in the anchor holes. The top of each protective plate in the length direction is set close to the top of the embankment, and the bottom end is fixed to slope;

[0051] Several protective holes 2 are spaced apart on each protective plate, and the protective holes are arranged along the length direction of the protective plate; the protective plate is cut in half along the longitudinal direction along the longitudinal section passing through the centerline of the width direction of the protective plate,...

Embodiment 2

[0080] Such as Figure 7 , 8 As shown, a dam anti-frost heave protection structure includes several protective plates 3, and several protective plates are arranged on the water-facing side along the length direction of the dam in turn, and there is a gap between two adjacent protective plates to form an expansion joint 10, and Two adjacent fenders are connected by a three-axis hinge in the width direction of the fenders, the top of each fender in the length direction is set close to the top of the embankment, and the bottom end of each fender in the length direction is located at the bottom of the embankment; each fender is spaced Several protective holes 2 are provided, and the protective holes are arranged along the length direction of the protective plate. The distance between the protective hole at the bottom and the top of the protective plate is determined according to the effective depth. The vertical distance between the lower surface of the bottommost protective hole...

Embodiment 3

[0091] A construction method for an anti-frost heave protective structure of a dam, comprising the following steps:

[0092] Step 1. First survey and measure parameters of the embankment slope on site, including slope slope, slope elevation, form and thickness of the original slope protection device, etc. Collect the water level height, the ice thickness pattern and the maximum ice thickness over the years.

[0093] The parameter k is calculated according to the collected water depth and the maximum ice thickness over the years, when , the protective structure of Embodiment 1 is used, that is, the protective plate is connected on the embankment through anchor holes and anchor rods. when , the protective structure of Embodiment 2 is used, that is, the bottom end of the protective plate is fitted with the bottom support plate.

[0094] Step 2: Determine the size of a single protective hole according to the slope angle and the thickness of the protective plate, and then dete...

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Abstract

The invention discloses a dam anti-frost heave protection structure and a construction method. The protection boards are sequentially fixedly connected to the water-facing side along the length direction of the dam. There is a gap between two adjacent protection boards, and several The protective hole is arranged along the length direction of the protective plate; the protective plate is cut in half along the width direction along the longitudinal section passing through the center line of the protective plate in the width direction, the protective hole is an isosceles trapezoid, and the protective plate has two working surfaces. The side close to the dam is the first working surface, and the side relatively far away from the dam is the second working surface. The smaller bottom of the trapezoid is located on the first working surface, and the longer bottom is located on the second working surface. The protective structure of the present invention can effectively reduce the damage to the dam due to the static ice pressure of the ice, and adopts the form of a protective hole with a narrow inside and a wide outside, which can not only reduce the static ice pressure of the ice, but also facilitate maintenance and cleaning during the dry season .

Description

technical field [0001] The invention relates to the technical field of dam protective buildings, in particular to a dam anti-frost heaving protection structure and a construction method. Background technique [0002] In the northern part of my country, due to the influence of the cold winter climate, there will be a certain thickness of ice in rivers and lakes. Under the influence of static ice pressure of ice and frost heaving force of soil, embankment slope protection and other hydraulic structures are often easily damaged, and the concrete slab is squeezed and fractured, thereby affecting the function of the embankment itself. [0003] Concrete structures are crushed and damaged by ice thrust and need to be repaired in time, but the maintenance cost is high and management is inconvenient. Moreover, there is a lag in the repair time, and the construction needs a lot of manpower, material resources and time, and the effect of maintenance is not obvious. Contents of the i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/10E02B8/00
CPCE02B3/10E02B8/00
Inventor 钟启明蒋景东杜镇瀚李卓单熠博李东兵刘嘉欣杨蒙陈小康胡亮
Owner NANJING HYDRAULIC RES INST
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