CN214993229U - Large-span thin-wall concrete sound barrier - Google Patents

Abstract

The application relates to a large-span thin-wall concrete sound barrier, including the basis, set firmly the vertical wall on the basis and connect the bow member between two rows of vertical walls, the prefabricated plate with sound barrier confined has been laid in the outside of erecting wall and bow member, be equipped with waterproof heat preservation on the prefabricated plate. The waterproof heat-insulating layer sequentially comprises a polymer mortar layer, a polyurea waterproof coating layer, a polyurethane heat-insulating plate and an anti-cracking mortar layer from inside to outside. A prestressed stay cable is arranged below the arch center, and two ends of the prestressed stay cable are connected with the arch center respectively. Through set up the prestressing force cable on the bow member, the prestressing force cable balances the bow member and to the thrust of basis, reduces the thrust that the basis was received to satisfying under the circumstances of bow member stability, can dwindle the size of ground, thereby reducing the area of ground, reducing the area of seeking land, reduce construction cost.

Description

Large-span thin-wall concrete sound barrier

Technical Field

The application relates to the field of sound barriers, in particular to a large-span thin-wall concrete sound barrier.

Background

The sound barrier is a wall structure provided beside railways and highways to reduce the influence of driving noise on nearby residents.

At present, most of railway sound barriers are vertical inserting plate type sound barriers, and partial sound barriers adopt a semi-closed structure. Because the integral structure of vertical type sound barrier is cantilever structure, receives wind load and train operation pulsation wind pressure influence, and the sound barrier height receives the restriction, and there is the sound wave diffraction in vertical type sound barrier simultaneously, and noise reduction effect is limited.

Disclosure of Invention

In order to improve the technical problem that noise reduction effect is not good of sound barrier, this application provides a large-span thin wall concrete sound barrier.

The application provides a large-span thin wall concrete sound barrier adopts following technical scheme:

the large-span thin-wall concrete sound barrier comprises a foundation, vertical walls fixedly arranged on the foundation and an arch center connected between two rows of vertical walls, wherein precast slabs for sealing the sound barrier are laid on the outer sides of the vertical walls and the arch center, and waterproof heat-insulating layers are arranged on the precast slabs.

By adopting the technical scheme, the arched sound barrier is arranged, so that the sound insulation range is large, no sound wave is diffracted, and the sound insulation effect is good; in addition, the open cut tunnel closed type sound barrier system is adopted, the main and secondary beam frameworks are of a reinforced concrete structure, the upper parts of the main and secondary beams are installed by prefabricated plates, and the surfaces of the main and secondary beams are sequentially subjected to waterproof and heat preservation treatment, so that the sound insulation effect is good, and the construction of a large-span, ultra-long and ultra-high sound barrier structure is met.

Optionally, the waterproof insulation layer sequentially comprises a polymer mortar layer, a polyurea waterproof coating layer, a polyurethane insulation board and an anti-cracking mortar layer from inside to outside.

By adopting the technical scheme, the polymer mortar layer is leveled, the polyurea waterproof coating layer is utilized for waterproof treatment, then the polyurethane insulation board is arranged on the waterproof layer, and then the anti-cracking mortar layer is made.

Optionally, an alkali-resistant mesh cloth is arranged between the polyurethane insulation board and the anti-cracking mortar layer.

By adopting the technical scheme, the anti-cracking performance of the mortar layer is improved by arranging the alkali-resistant mesh cloth.

Optionally, a decorative layer is coated outside the anti-crack mortar layer.

Through adopting above-mentioned technical scheme, because the sound barrier generally sets up in neighbouring residential area or urban area, set up the coating of grass green and decorate, make it well fuse together with afforestation on every side.

Optionally, a prestressed cable is arranged below the arch center, and two ends of the prestressed cable are respectively connected with the arch center.

Through adopting above-mentioned technical scheme, set up the prestressing force cable on the bow member, prestressing force cable balance bow member reduces the bow member to the thrust of ground to satisfying under the circumstances of bow member stability, can dwindle the size of ground, thereby reduce the area of ground, reduce the area of seeking land, reduce construction cost.

Optionally, the bow member includes girder and secondary beam, the both ends of girder are connected with the perpendicular wall of both sides respectively, the secondary beam is connected between adjacent girder, and sets up many along the radian direction interval of girder.

Through adopting above-mentioned technical scheme, the secondary beam will erect wall and girder and connect as whole, and the wholeness is strong. The stability is good.

Optionally, a middle column is supported at the bottom of the main beam.

Through adopting above-mentioned technical scheme for support the girder of main atress, guarantee the stability of sound barrier.

Optionally, a pile foundation is arranged at the bottom of the foundation.

Through adopting above-mentioned technical scheme, the pile foundation is used for supporting the basis, avoids the ground soil property relatively poor, the not enough problem of bearing capacity.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the arched sound barrier, the sound insulation range is large, no sound wave is diffracted, and the sound insulation effect is good; in addition, a closed sound barrier system of the open cut tunnel is adopted, the main and secondary beam frameworks of the closed sound barrier system are in a reinforced concrete structure, the upper parts of the main and secondary beams are installed by prefabricated plates, and the surfaces of the main and secondary beams are sequentially subjected to waterproof and heat preservation treatment, so that the closed sound barrier system has a good sound insulation effect and can meet the requirements of construction of large-span, ultra-long and ultra-high sound barrier structures;

2. set up the prestressing force cable on the bow member, prestressing force cable balance bow member is to the thrust of basis, reduces the bow member to the thrust of ground to satisfying under the circumstances of bow member stability, can dwindle the size of ground, thereby reduce the area of ground, reduce land acquisition area, reduce construction cost.

Drawings

Fig. 1 is a schematic view of the structure of a sound barrier.

Fig. 2 is a sectional view of the prefabricated panels and the waterproof and insulating sheet.

Description of reference numerals: 1. a foundation; 2. erecting a wall; 3. an arch frame; 31. a main beam; 32. a secondary beam; 4. prefabricating a slab; 5. a waterproof heat-insulating layer; 51. a polymer mortar layer; 52. a polyurea waterproof coating layer; 53. a polyurethane insulation board; 54. alkali-resistant mesh cloth; 55. an anti-crack mortar layer; 6. a prestressed stay cable; 7. a middle column.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses large-span thin-walled concrete sound barrier. Referring to fig. 1 and 2, the sound barrier includes a foundation 1, vertical walls 2 fixed to the foundation 1, an arch 3 connected between two rows of the vertical walls 2, prefabricated panels 4 laid on the outer sides of the vertical walls 2 and the arch 3, and a waterproof insulating layer 5 provided on the prefabricated panels 4.

The foundation 1 is a gravity type strip foundation 1 which is of a reinforced concrete structure and is mainly used for bearing the lateral thrust of an arch frame 3, multiple groups of foundations are arranged at intervals along the length direction of a sound barrier, and each group of foundations comprises two foundations 1 which are symmetrically arranged relative to the axis of the sound barrier.

The vertical wall 2 is of a reinforced concrete structure and is fixedly installed on the foundation 1, and after the foundation 1 is poured and reaches the strength, the vertical wall 2 is bound with reinforcing steel bars, a vertical mold and poured concrete to form the vertical wall 2.

The arch frame 3 is of a reinforced concrete structure and comprises an arc-shaped main beam 31 and a secondary beam 32, wherein two ends of the main beam 31 are respectively and fixedly connected to the two symmetrical vertical walls 2. The secondary beams 32 are arranged between the adjacent main beams 31 and between the adjacent vertical walls 2, and a plurality of secondary beams are uniformly arranged at intervals along the radian direction of the main beams 31, so that the arch center 3 is connected into a whole, and the overall performance and the stability of the sound barrier are improved; when the secondary beam 32 is constructed on the vertical wall 2 and the main beam 31, the synchronous construction is completed.

The precast slabs 4 are SP prestressed concrete hollow slabs, are laid on the outer sides of the arch frame 3 and the vertical wall 2 and are rigidly connected with the arch frame 3 and the vertical wall 2, for example, anchor bars extend out of the arch frame 3 and the vertical wall 2 and are inserted into the precast slabs 4 to be anchored.

The waterproof insulating layer 5 comprises a 20mm polymer mortar layer 51, a polyurea waterproof coating layer 52, a polyurethane insulation board 53, two layers of alkali-resistant mesh fabrics 54, a 15mm anti-cracking mortar layer 55 and a grass green decorative layer coated on the anti-cracking mortar layer 55, wherein the polymer mortar layer 51, the polyurea waterproof coating layer 52 and the polyurethane insulation board are sequentially arranged from inside to outside.

Still be equipped with prestressing force cable 6 in bow member 3 below, prestressing force cable 6 both ends are connected with girder 31 respectively, set up prestressing force cable 6 on bow member 3, prestressing force cable 6 balance bow member 3 is to the thrust of basis 1, reduce bow member 3 to the thrust of ground, thereby under the condition that satisfies bow member 3 stability, can reduce the size of ground, thereby reduce the area of ground, reduce land acquisition area, reduce construction cost.

Further, when the width of the sound barrier is wide, the middle columns 7 are arranged in the sound barrier, at least two middle columns 7 are arranged along the span direction of the sound barrier, a space for existing lines to pass through is formed between the middle columns 7, multiple groups of middle columns 7 are uniformly arranged along the length direction of the sound barrier at intervals, one end of each middle column 7 is supported at the bottom of the main beam 31, and the other end of each middle column 7 is supported on the foundation and is used for supporting the arch frame 3. When foundation soil property is relatively poor, when bearing capacity is not enough, set up the pile foundation in the bottom of basis 1, the pile foundation is used for supporting basis 1.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. Large-span thin wall concrete sound barrier, its characterized in that: the sound barrier is characterized by comprising a foundation (1), vertical walls (2) fixedly arranged on the foundation (1) and an arch center (3) connected between the two rows of vertical walls (2), prefabricated plates (4) for sealing the sound barrier are laid outside the vertical walls (2) and the arch center (3), and waterproof heat-insulating layers (5) are arranged on the prefabricated plates (4).

2. The large-span thin-walled concrete sound barrier of claim 1, characterized in that: the waterproof heat-insulating layer (5) sequentially comprises a polymer mortar layer (51), a polyurea waterproof coating layer (52), a polyurethane heat-insulating plate (53) and an anti-cracking mortar layer (55) from inside to outside.

3. The large-span thin-walled concrete sound barrier of claim 2, characterized in that: and an alkali-resistant mesh cloth (54) is arranged between the polyurethane heat-insulating plate (53) and the anti-cracking mortar layer (55).

4. The large-span thin-walled concrete sound barrier of claim 2, characterized in that: and a decorative layer is coated outside the anti-crack mortar layer (55).

5. The large-span thin-walled concrete sound barrier of claim 1, characterized in that: a prestressed stay cable (6) is arranged below the arch center (3), and two ends of the prestressed stay cable (6) are respectively connected with the arch center (3).

6. The large-span thin-walled concrete sound barrier of claim 1, characterized in that: the arch center (3) comprises main beams (31) and secondary beams (32), the two ends of each main beam (31) are connected with the vertical walls (2) on the two sides respectively, the secondary beams (32) are connected between the adjacent main beams (31), and a plurality of secondary beams are arranged at intervals along the radian direction of the main beams (31).

7. The large-span thin-walled concrete sound barrier of claim 6, wherein: the bottom of the main beam (31) is supported with a middle column (7).

8. The large-span thin-walled concrete sound barrier of claim 1, characterized in that: the bottom of the foundation (1) is provided with a pile foundation.

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