Lightweight high-strength concrete self-standing sound barrier with reinforcing ribs

Abstract

The utility model relates to the technical field of sound barriers, and discloses a light high-strength concrete self-standing sound barrier with reinforcing ribs, the sound barrier is formed by connecting a plurality of unit structures along the extending direction of a road, and each unit structure comprises a sound absorption material and a sound insulation wall made of light high-strength concrete; the sound insulation wall comprises a sound insulation panel erected on the ground, a mounting base and a plurality of reinforcing ribs; the sound insulation panel is of a rectangular plate structure with a plurality of vertical cavities, a horizontal installation base is arranged on the side, back on to a sound source, of the bottom of the sound insulation panel, and the installation base is fixed to the ground. The bottom surface of the reinforcing rib is fixedly connected with the mounting base; one side surface, vertical to the bottom surface, of the reinforcing rib is fixedly connected with the sound insulation panel; and the sound absorption material is filled in the cavity of the sound insulation panel or is attached to the plate surface, facing the sound source, of the sound insulation panel. The utility model has the advantages of no need of upright post, simple structure, convenience in construction, light weight, high installation accuracy and high durability.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sound barrier technical field especially relates to a self-standing sound barrier of light weight high strength concrete with reinforcing rib. BACKGROUND

[0002] With the social economic development, the advancement of urbanization, people's demand for solving urban traffic congestion, noise prevention and environmental protection is also higher and higher, and a large number of sound barriers are set on both sides of the road and rail transit lines in the city. In recent years, the light weight high strength concrete (light weight high strength concrete refers to the dry apparent density of not more than 1950kg / m3, the strength grade is LC30 above structure light weight concrete prepared by using high strength light coarse aggregate, ordinary sand, cement and water) preparation technology is constantly improved, and is popularized and used in the sound barrier field, and the light weight high strength cement sound absorption and insulation board produced has good sound absorption and insulation performance, mechanical properties, weather resistance and durability, is light and convenient for construction, has small foundation load, the structure type can be diversified, the appearance is easy to coordinate with the surrounding environment, is a kind of efficient sound absorption and noise reduction product. Light weight high strength concrete and sound absorption material are used in combination, and better sound absorption and insulation effect can be obtained. At present, it has been applied to highway, railway and viaduct to a certain extent.

[0003] The conventional method is to use H-shaped steel column as intermediate connecting framework, the H-shaped steel column is fixed by ground pre-buried bolt, the light weight high strength cement sound absorption and insulation board with a width of 500mm is inserted between the H-shaped steel flange, and rubber strip sealing and angle steel, bolt and steel column connection are used. During on-site construction, the ground bolt fixed with the H-shaped steel column is often difficult to accurately pre-bury, not only affects the fixation of the H-shaped steel column, but also limits the installation precision of the sound absorption and insulation board, and the rubber strip is prone to fall off and the bolt is prone to loosen during use. In the open environment, the steel column is prone to rust, which affects the appearance and safety. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a self-standing sound barrier of light weight high strength concrete with reinforcing rib, which does not need column, has simple structure, is convenient for construction, has light self weight and high installation precision, and has high durability.

[0005] The utility model discloses a light high-strength concrete self-standing sound barrier with reinforcing ribs, which is connected by a plurality of unit structures along the extension direction of a road. The unit structure comprises sound-absorbing material and a sound insulation wall made of light high-strength concrete. The sound insulation wall comprises a sound insulation panel erected on the ground, a mounting base and a plurality of reinforcing ribs. The sound insulation panel is a rectangular plate structure with a plurality of vertical cavities. The bottom of the sound insulation panel is provided with a horizontal mounting base on the side away from the sound source. The mounting base is fixed to the ground. The bottom surface of the reinforcing rib is fixed to the mounting base. One side of the reinforcing rib perpendicular to the bottom surface is fixed to the sound insulation panel. The sound-absorbing material is filled in the cavities of the sound insulation panel or attached to the panel surface facing the sound source.

[0006] Further, the surface density of the sound insulation panel is 30-100 kg / m2. The cement-based sound insulation panel has a compressive strength of ≥120 MPA, a bending strength of ≥15 MPA and an elastic modulus of ≥40 GPA.

[0007] Further, the sound insulation panel is provided with overlapping clamping grooves at both ends. The panel surface at one end of the sound insulation panel is provided with a recess. The other end of the sound insulation panel is provided with a protrusion. The protrusion and the recess of adjacent sound insulation panels are matched to realize the overlapping of the unit structures. The overlapping parts are adhesively fixed.

[0008] Further, the height of the mounting base is 1 / 10-1 / 2 of the height of the unit structure. The width of the mounting base is 1 / 4-1 / 2 of the height of the unit structure. Through holes are arranged between the mounting base and the adjacent reinforcing ribs. The ground pre-buried bolts are matched with the through holes to fix the mounting base to the ground.

[0009] Further, the height of the reinforcing rib is consistent with the height of the sound insulation panel. The width of the bottom surface of the reinforcing rib is consistent with the width of the mounting base. The width of the top surface of the reinforcing rib is smaller than the width of the bottom surface. The thickness of the reinforcing rib is 1 / 10-1 / 14 of the height of the unit structure and is not less than 30 mm. The reinforcing ribs are arranged at equal intervals, and the interval is 1 / 4-1 / 2 of the height of the unit structure.

[0010] Further, the sound insulation panel, the mounting base and the reinforcing rib are an integrated structure. The upper end of the sound insulation panel is provided with a pre-buried part for hoisting.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. Each unit structure is a whole, which improves the stability of the sound barrier system while having good sound absorption and insulation effects. The utility model does not need the steel column in the prior art, reduces the bolt connection, has a simple structure, light self-weight and high installation precision, and improves the rigidity and integrity of the unit structure through the reinforcing rib.

[0013] 2. The soundproof panel of the utility model adopts light high-strength concrete, the compressive strength is greater than or equal to 120MPA, the flexural strength is greater than or equal to 15MPA, and the elastic modulus is greater than or equal to 40GPA, further guarantee the firmness of sound barrier system.

[0014] 3. The utility model discloses unit structure more convenient, easy to construction.

[0015] 4. The utility model discloses soundproof panel, installation base and reinforcing rib integrally formed, constitute continuous plate belt, bear wind load, train wind pressure, and the stress system is more reasonable, and light high-strength concrete has better mechanical properties. ACCURACY OF DRAWINGS

[0016] Figure 1 It is unit structure schematic diagram of the utility model.

[0017] Figure 2 It is soundproof panel plan view of the utility model.

[0018] Figure 3 It is installation base sectional view of the utility model.

[0019] Among them, 1-unit structure, 2-washer, 3-soundproof panel, 4-installation base, 5-reinforcing rib, 6-through hole, 7-embedded bolt, 8-concave part, 9-convex part, 10-embedded part, 11-nut, 12-self-compacting concrete. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is in combination with the drawing and example, and the utility model is further explained in detail.It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0021] The utility model provides a kind of light high-strength concrete self-standing sound barrier with reinforcing rib, which is connected by several unit structures 1 along the extension direction of road, as shown in Fig. Figure 1 Unit structure 1 includes sound-absorbing material and soundproof wall made of light high-strength concrete.

[0022] Soundproof wall includes soundproof panel 3 erected on ground, installation base 4 and several reinforcing ribs 5;Soundproof panel 3 is rectangular plate structure, and rectangular plate structure has several vertical cavities, and soundproof panel 3 bottom is provided with horizontal installation base 4 on the side away from sound source, and installation base 4 is fixed on ground;Reinforcing rib 5 bottom surface is fixedly connected with installation base 4, and one side surface perpendicular to the bottom surface of reinforcing rib 5 is fixedly connected with soundproof panel 4.Sound-absorbing material is filled in the cavity of soundproof panel 3, or attached to the panel surface of soundproof panel 3 facing sound source.

[0023] The soundproof panel 3 has a thickness in the range of 10-100 mm, the thickness of the soundproof panel 3 refers to the width of the rectangular plate structure, the areal density of the soundproof panel 3 is 30-100 kg / m 2 ; if the thickness is too small, it is difficult to meet the strength and stiffness requirements required to withstand wind load, and if the thickness is too large, the construction cost increases, preferably 40-80 kg / m 2 . The soundproof panel 3 uses cement-based compressive strength ≥120MPA, flexural strength ≥15MPA, elastic modulus ≥40GPA.

[0024] As shown in Figure 2 , the soundproof panel 3 can also be provided with overlapping clamping grooves at both ends, the soundproof panel 3 is provided with a recess 8 at one end facing the sound source panel, and the other end is provided with a convex part 9; the convex part 9 and the recess 8 between adjacent soundproof panels 3 cooperate to realize the overlapping of the unit structure 1, and the overlapping part can be filled with glass silicon to make the adjacent soundproof panels 3 adhere together. In this embodiment, the recess 8 is a rectangular structure, and the convex part 9 is a solid wall with a cuboid structure; the convex part 9 and the recess 8 have the same length along the road extension direction, both are 100-500 mm, and the overall thickness of the convex part 9 and the recess 8 after overlapping is consistent with the thickness of the soundproof panel 3.

[0025] The height of the mounting base 4 is 1 / 10-1 / 2 of the height of the unit structure 1, and the width of the mounting base 4 is 1 / 4-1 / 2 of the height of the unit structure 1, the width of the mounting base 4 refers to the length perpendicular to the direction of the soundproof panel 3. As shown in Figure 3 , the mounting base 4 is provided with a through hole 6 between adjacent reinforcing ribs 5, and the ground pre-buried bolt 7 passes through the through hole 6, and the mounting base 4 is fixed to the ground through the nut 11 matched with the pre-buried bolt 7, and the gasket 2 can also be arranged between the nut 11 and the mounting base 4; the diameter of the through hole 6 is more than twice the diameter of the pre-buried bolt 7, and the gap between the two can be filled with self-compacting concrete 12, and the inner side of the through hole 6 can also have a surface roughness.

[0026] The arrangement of the reinforcing ribs 5 adopts the principle of equidistance on the facade of the sound barrier, and is arranged on the side of the sound insulation panel 3 without the overlapping clamping groove. The height of the reinforcing rib 5 is consistent with the height of the sound insulation panel 3, the bottom width of the reinforcing rib 5 is consistent with the width of the mounting base 4, the top width of the reinforcing rib 5 is smaller than the bottom width, that is, the side of the reinforcing rib 5 away from the sound insulation panel 3 is not perpendicular to the mounting base 4, the cross section of the reinforcing rib 5 gradually increases from top to bottom, the left view and the right view of the reinforcing rib 5 are right-angled triangles or right-angled trapezoids, and the outer edge of the cross section of the lowermost end of the reinforcing rib 5 is flush with the edge of the mounting base 4. The thickness of the reinforcing rib 5 is 1 / 10-1 / 14 of the height of the unit structure 1, and is not less than 30 mm, and the thickness of the reinforcing rib 5 refers to the length of the reinforcing rib 5 in the direction of extending along the road. The reinforcing ribs 5 are arranged equidistantly, and the interval is 1 / 4-1 / 2 of the height of the unit structure 1. In specific implementation, the size and interval of the reinforcing rib 5 can be selected according to the height of the unit structure 1 and the size of the wind load and train wind pressure under the use condition.

[0027] The sound insulation panel 3, the mounting base 4 and the reinforcing rib 5 are integrally formed, and the top end of the sound insulation panel 3 is provided with a pre-embedded part 10 for hoisting. Further, the sound insulation panel 3, the mounting base 4 and the reinforcing rib 5 can be provided with steel bars or steel wire meshes during pouring and forming according to needs.

[0028] The unit structure 1 is an integral whole, the stability of the sound barrier system is improved, the reinforcing rib 5 is arranged to improve the rigidity and integrity of the unit structure 1, and the overlapping between the sound barrier unit structures 1 is more convenient than the tenon joint.

[0029] The above only describes preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A lightweight high-strength concrete self-standing sound barrier with reinforcing ribs, characterized by, The sound barrier is formed by connecting a plurality of unit structures along the extending direction of the road, and the unit structure comprises sound-absorbing material and a sound insulation wall made of light-weight high-strength concrete; The sound insulation wall comprises sound insulation panels erected on the ground, mounting bases and a plurality of reinforcing ribs; the sound insulation panel is a rectangular plate structure with a plurality of vertical cavities, and the bottom of the sound insulation panel is provided with a horizontal mounting base on the side away from the sound source, and the mounting base is fixed on the ground; the bottom surface of the reinforcing rib is fixedly connected with the mounting base, and one side surface of the reinforcing rib perpendicular to the bottom surface is fixedly connected with the sound insulation panel; The sound-absorbing material is filled in the cavities of the sound insulation panel or attached to the plate surface of the sound insulation panel facing the sound source.

2. The lightweight high strength concrete free standing sound barrier with reinforcing ribs as described in claim 1, wherein, Soundproofing panel areal density 30-100 kg / m 2 Cement-based compressive strength ≥ 120 MPa, flexural strength ≥ 15 MPa, elastic modulus ≥ 40 GPA.

3. The lightweight high strength concrete self-erecting sound barrier with reinforcing ribs as claimed in claim 1, wherein, The sound insulation panel is provided with overlapping clamping grooves at both ends, and the plate surface of one end of the sound insulation panel facing the sound source is provided with a recess, and the other end of the sound insulation panel is provided with a protrusion; the protrusion and the recess between adjacent sound insulation panels are matched to realize the overlapping of the unit structures, and the overlapping parts are adhesively fixed.

4. The lightweight, high strength concrete free standing sound barrier with reinforcing ribs of claim 1, wherein, The height of the mounting base is 1 / 10-1 / 2 of the height of the unit structure, and the width of the mounting base is 1 / 4-1 / 2 of the height of the unit structure, through holes are arranged between the mounting base and the adjacent reinforcing ribs, and the ground pre-buried bolts are matched with the through holes to fix the mounting base on the ground.

5. The lightweight, high strength concrete self-erecting sound barrier with reinforcing ribs of claim 1, wherein, The height of the reinforcing rib is consistent with the height of the sound insulation panel, the width of the bottom surface of the reinforcing rib is consistent with the width of the mounting base, and the width of the top surface of the reinforcing rib is smaller than the width of the bottom surface; the thickness of the reinforcing rib is 1 / 10-1 / 14 of the height of the unit structure, and is not less than 30 mm; the reinforcing ribs are arranged at equal intervals, and the interval is 1 / 4-1 / 2 of the height of the unit structure.

6. A lightweight high strength concrete free standing sound barrier with reinforcing ribs as claimed in any one of claims 1 to 5 wherein, The sound insulation panel, the mounting base and the reinforcing rib are an integrated structure, and the upper end of the sound insulation panel is provided with a pre-buried part for hoisting.

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