CN201053107Y - Integrated precast concrete sound barrier unit plate - Google Patents
Integrated precast concrete sound barrier unit plate Download PDFInfo
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- CN201053107Y CN201053107Y CNU2007200801289U CN200720080128U CN201053107Y CN 201053107 Y CN201053107 Y CN 201053107Y CN U2007200801289 U CNU2007200801289 U CN U2007200801289U CN 200720080128 U CN200720080128 U CN 200720080128U CN 201053107 Y CN201053107 Y CN 201053107Y
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Abstract
The utility model discloses an integral precast concrete acoustic barrier unit board. The integral precast concrete acoustic barrier unit board of the utility model comprises a concrete barrier (1) and an absorbing board (2) arranged on the inner wall of the concrete barrier (1). The utility model which relates to an acoustic barrier for passenger special line has the advantages of safe and reliable structure, reduction of pneumatic load resonance and fatigue effect, and long service life.
Description
Technical field
The utility model relates to traffic noise control and field of environment protection, is specifically related to a kind of sound barrier that is used for passenger dedicated railway line.
Background technology
The Noise Control problem more and more is subject to people's attention, and ambient noise is directly connected to people's quality of life, even people's physiology and mental health is had material impact.
Adopt the board plug type sound barrier in railway line with the usual speed operation more, reduce the noise that running train produces, satisfy the correlation technique condition, but on passenger dedicated railway line, the sound barrier of installing along the railway can suffer because the train of running at high speed impacts by the sizable pulsation wind-force that causes.Since the resonance and the fatigue effect of pneumatic load, the application life that can reduce sound barrier greatly.Existing board plug type sound barrier can't satisfy the requirement of passenger dedicated railway line to sound barrier.
The utility model content
Technical problem to be solved in the utility model provides a kind of resonance, raising antifatigue effect capability that reduces pneumatic load, the integrated precast concrete sound barrier unit board of long service life.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of integrated precast concrete sound barrier unit board, comprise concrete barrier, and the acoustical board that is arranged on the concrete barrier inwall.
Adopt precast concrete to form the braced structures of barrier as acoustical board, because concrete high strength, compare with traditional board plug type sound barrier, sound barrier of the present utility model unit has higher intensity, make its reliability height, can solve of the fatigue failure of the pulsating force of high-speed cruising train generation, the application life of improving sound barrier to the sound barrier generation.
Described acoustical board is arranged in the groove of concrete barrier inwall.
Described acoustical board is connected by bolt in the groove of concrete barrier inwall, fills bonding agent between described acoustical board and the concrete barrier inwall.It is fixing acoustical board that bolt connects purpose, prevents to come off.Adopt bonding agent that acoustical board and unit board contact surface is bonding fully, prevent fluctuating wind that bullet train produces to connecting bolt, tear contact surface, even destruction acoustical board makes its breakage, ruptures and falls piece, comes off.
The lateral surface of described acoustical board and concrete barrier inwall are positioned at same plane; Described concrete barrier thickness dwindles from the bottom to the top gradually.Thereby make the inwall of integrated precast concrete sound barrier unit board form a vertical surface.Thereby aspect view, realize coordination, the unification of sound barrier and railway construction, overall appearance smoothness, attractive in appearance.Concrete barrier thickness dwindles from the bottom to the top gradually, meets pulsating force and increases with vertical height and progressively successively decrease, reduce during near the sound barrier top regularity of distribution faster.Compare with the concrete barrier of uniform thickness, like this can economical with materials.
The bottom of described concrete acoustical barrier is connected to the basis by concrete cast-in-situ.Compare with traditional connected mode, concrete cast-in-situ more can satisfy the requirement of sound barrier intensity.
The top of described concrete barrier is fixedly connected with penetrating sound barrier by a plurality of steel expansion bolts.
Integrated precast concrete sound barrier unit board of the present utility model, the fatigue failure that the pulsating force that adopts the integrated precast concrete sound barrier to solve the generation of high-speed cruising train produces sound barrier.Adopt the steel concrete barrier to improve the intrinsic frequency of sound barrier, avoided train pulsating force effect frequency, the pulsating force that has overcome the generation of high-speed cruising train is destroyed the resonance that sound barrier produces.Thereby prolonged application life of the present utility model.Concrete barrier thickness dwindles from the bottom to the top gradually, meets pulsating force and increases with vertical height and progressively successively decrease, reduce during near the sound barrier top regularity of distribution faster.The unit board inboard is a vertical surface, satisfies the requirement of passenger's view comfort level in the car, and reaches the functional requirement of view by variations such as visual angle, light, coordinates mutually with surrounding environment.
The utility model will be further described below in conjunction with Figure of description.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Fig. 3 is the schematic diagram that pulsating force distributes along the sound barrier height among the embodiment.
Fig. 4 is the schematic diagram of pulsating force and train running speed relation among the embodiment.
The specific embodiment
With reference to Fig. 1, Fig. 2, integrated precast concrete sound barrier unit board comprises concrete barrier 1, and is connected acoustical board 2 in the groove of concrete barrier 1 inwall by bolt.Fill bonding agent between described acoustical board (2) and concrete barrier (1) inwall.The lateral surface of acoustical board 2 and concrete barrier 1 inwall are positioned at same plane.The bottom of concrete acoustical barrier 1 is connected to basis 3 by concrete cast-in-situ.The top of described concrete barrier (1) is provided with penetrating sound barrier.
With reference to Fig. 3, Fig. 4, among Fig. 3 first curve 21 be the pulsating force negative pressure value along sound barrier height distribution situation, second curve 22 be pulsating force malleation value along sound barrier height distribution situation, the 3rd curve 23 is that pulsating force pressure differential amplitude is along sound barrier height distribution situation.The 4th curve 11 is the situation that pulsating force pressure differential amplitude changes with train running speed among Fig. 4, and the 5th curve 12 is the situation that pulsating force malleation value changes with train running speed, and the 6th curve 13 is the situation that the pulsating force negative pressure value changes with train running speed.It is relevant that pulsating force acts on the frequency that shock response and running train on the sound barrier produce, both frequencies near the time easily resonate.Pulsating force will be amplified several times when resonance takes place, and destroy the structure of sound barrier.For this reason, passenger dedicated railway line noise barrier structure security reliability be solved, the frequency that the high-speed cruising train produces must be avoided.Use for reference the field testing data of German high-speed railway---the frequency that 350 kilometers running trains of speed per hour produce is 3.3～4.4Hz, and wide by structural analysis and theoretical research determining unit plate is 2.0～4.0m,
Introduce the embodiment of a concrete integrated precast concrete sound barrier unit board below, for high 3.95m, thick 0.2m, only the base rigidly connect, peripheral unconfined integral type sound barrier, the natural frequency of calculating the sound barrier unit board sees Table 1.
Table 1
Natural frequency was far away from frequency 3.3～4.4Hz that 350 kilometers running trains of speed per hour produce when unit board 2.0m was wide as can be known from table, can not cause sound barrier resonance.
In the present embodiment,, adopt the integrated precast concrete unit board of wide 2.0m, high 3.95m according to size, the regularity of distribution of pulsating force.
Sound barrier adopts the steel concrete unit board, and concrete is the steel concrete of C40 label, is variable cross-section for saving steel concrete consumption and unit board stressing conditions with the unit board cross section, and it is inboard to be that vertical surface, the outside are variable cross-section, and the land lines are set.
According to the regulation of " railway bridges and culverts steel concrete and prestressed reinforced concrete construction design specifications ", in the present embodiment, integrated precast concrete sound barrier unit board adopts the HRB335 reinforcing bar, and " main force " effect permissible stress of HRB335 reinforcing bar down is [σ
Reinforcing bar]=175MPa, concrete [σ
h]=13.5MPa; " main+attached " effect permissible stress of HRB335 reinforcing bar down is [σ
Reinforcing bar]=230MPa, concrete [σ
h]=21.84MPa; The crack admissible value is by [w]=0.20mm control.Through tentative calculation, the shearing of whole noise barrier structure does not start to control making usefulness with axle power, and by crack and tired inspection calculation control, this structure can ftracture and tired inspection calculation by the flexural member pair cross-section.
The combination of sound barrier load is carried out by following four kinds of operating modes, sees sound barrier load Assembly Listing table 2:
Table 2
Below corresponding analysis is made at the concrete position of integrated precast concrete sound barrier unit board:
(1) inspection of junction 3 is calculated
Sectional dimension is 300mm * 2000mm, and the thickness of representing this place's concrete barrier 1 is 300mm, and width is 2000mm, and the reinforcing bar in the corresponding concrete barrier is the reinforcing bar of 10 φ 16mm.
Operating mode 1: calculate vertical force N=18.56kN/m, lateral force Q=6.48kN/m calculated bending moment W=18.84kN*m/m;
Operating mode 2: calculate vertical force N=18.56kN/m, lateral force F=-6.48kN/m calculated bending moment W=-9.53kN*m/m;
Operating mode 3: calculate vertical force N=18.56kN/m, lateral force F=8.17kN/m, calculated bending moment w=22.53kN*m/m;
Operating mode 4: calculate vertical force N=18.56kN/m, lateral force F=-8.17kN/m, calculated bending moment W=-13.28kN*m/m;
Table 3
| Sequence number | Vertical force N (kN/m) | Lateral force F (kN/m) | Moment of flexure W (kN*m/m) |
| |
18.56 | 6.48 | 18.84 |
| |
18.56 | -6.48 | -9.53 |
| |
18.56 | 8.17 | 22.53 |
| |
18.56 | -8.17 | -13.28 |
As calculated, reinforcing bar maximum stress σ=83.04Mpa, concrete maximum crushing stress are σ h=3.71Mpa, crack width ω=0.10mm.Meet the demands.
Tired calculating:
According to the achievement in research of china academy of railway sciences, the governing factor that influences the noise barrier structure fatigue failure is a concrete fatigue tensile strength, and the concrete tensile fatigue strength adopts the achievement of institute of iron section, that is:
f
r MaxConcrete section edge maximum tension stress under-reloading and the effective prestress effect;
f
r t-concrete static(al) bending and tensile strength;
N
Cr-load number of repetition;
Can get by following formula,
Reloading maximal bending moment W=11.40kN*m/m when operating mode 1, operating mode 2, operating mode 3, operating mode 4 tired calculating, train moves 210 pairs every day, considers, meets the demands 60 years service lives.
(2) inspection of concrete 1 bottom d is calculated
The cross section is size: 430mm * 2000mm, and the thickness of representing this place's concrete barrier 1 is 430mm, and width is 2000mm, and the reinforcing bar in the corresponding concrete barrier is the reinforcing bar of 10 φ 12mm.
Operating mode 1: calculate vertical force N=18.56kN/m, lateral force F=6.48kN/m, calculated bending moment W=18.36kN*m/m;
Operating mode 2: calculate vertical force N=18.56kN/m, lateral force F=-6.48kN, calculated bending moment W=-7.22kN*m/m;
Operating mode 3: calculate vertical force N=18.56kN/m, lateral force F=8.17kN/m, calculated bending moment W=21.70kN*m/m;
Operating mode 4: calculate vertical force N=18.56kN/m, lateral force F=-8.17kN/m, calculated bending moment W=-10.56kN*m/m;
Table 4
| Sequence number | Vertical force N (kN/m) | Lateral force F (kN/m) | Moment of flexure W (kN*m/m) |
| |
18.56 | 6.48 | 18.36 |
| |
18.56 | -6.48 | -7.22 |
| |
18.56 | 8.17 | 21.70 |
| |
18.56 | -8.17 | -10.56 |
As calculated, reinforcing bar maximum stress σ=86.71Mpa, concrete maximum crushing stress are σ h=2.78Mpa, crack width ω=0.11mm.Meet the demands.
Tired calculating:
Reloading maximal bending moment W=18.36kN*m/m when operating mode 1, operating mode 2, operating mode 3, operating mode 4 tired calculating, train moves 210 pairs every day, considers, meets the demands 60 years service lives.
(3) the 3rd inspections are calculated the inspection of cross section a and are calculated
The 3rd inspection is calculated cross section a and be higher than about 645mm place, basic bottom on concrete barrier, sectional dimension is 210mm * 2000mm, the thickness of representing this place's concrete barrier 1 is 210mm, and width is 2000mm, and the reinforcing bar in the corresponding concrete barrier is the reinforcing bar of 10 φ 12mm.
Operating mode 1: calculate vertical force N=13.60kNkN/m, lateral force F=6.48kN, calculated bending moment W=11.41kN*m/m;
Operating mode 2: calculate vertical force N=13.60kN/m, lateral force F=-6.48kN, calculated bending moment W=-11.41kN*m/m;
Operating mode 3: calculate vertical force N=13.60kN/m, lateral force F=8.17kN/m, calculated bending moment W=14.38kN*m/m;
Operating mode 4: calculate vertical force N=13.60kN/m, lateral force F=-8.17kN/m, calculated bending moment W=-14.38kN*m/m;
Table 5
| Sequence number | Vertical force N (kN/m) | Lateral force F (kN/m) | Moment of flexure W (kN*m/m) |
| |
13.60 | 6.48 | 11.41 |
| |
13.60 | -6.48 | -11.41 |
| |
13.60 | 8.17 | 14.38 |
| |
13.60 | -8.17 | -14.38 |
As calculated, reinforcing bar maximum stress σ=134.44Mpa, concrete maximum crushing stress are σ h=7.07Mpa, crack width ω=0.19mm.Meet the demands!
Tired calculating:
Reloading maximal bending moment W=11.41kN*m/m when operating mode 1, operating mode 2, operating mode 3, operating mode 4 tired calculating, train moves 210 pairs every day, considers, meets the demands 60 years service lives.
(4) the 4th inspections are calculated the inspection of cross section b and are calculated
The 4th inspection is calculated cross section b and be higher than about 1265mm place, basic bottom on concrete barrier, the corresponding herein lower end that is installed in the acoustical board in the concrete barrier groove, sectional dimension is 165mm * 2000mm, the thickness of representing this place's concrete barrier 1 is 165mm, width is 2000mm, and the reinforcing bar in the corresponding concrete barrier is the reinforcing bar of 10 φ 12mm.
Operating mode 1: calculate vertical force N=7.20kNkN/m, lateral force F=4.91kN, calculated bending moment W=6.56kN*m/m;
Operating mode 2: calculate vertical force N=7.20kN/m, lateral force F=-4.91N, calculated bending moment W=-6.56kN*m/m;
Operating mode 3: calculate vertical force N=7.20kN/m, lateral force F=6.19kN/m, calculated bending moment W=8.27kN*m/m;
Operating mode 4: calculate vertical force N=7.20kN/m, lateral force F=-6.19kN/m, calculated bending moment W=-8.27kN*m/m;
Table 6
| Sequence number | Vertical force N (kN/m) | Lateral force F (kN/m) | Moment of flexure W (kN*m/m) |
| |
7.20 | 4.91 | 6.56 |
| |
7.20 | -4.91 | -6.56 |
| |
7.20 | 6.19 | 8.27 |
| |
7.20 | -6.19 | -8.27 |
As calculated, reinforcing bar maximum stress σ=60.85Mpa, concrete maximum crushing stress are σ h=3.14Mpa, crack width ω=0.08mm.Meet the demands!
Tired calculating:
Reloading maximal bending moment W=6.56kN*m/m when operating mode 1, operating mode 2, operating mode 3, operating mode 4 tired calculating, train moves 210 pairs every day, considers, meets the demands 60 years service lives.
Cross section c is calculated in (five) the 5th inspections
The 5th inspection is calculated cross section c and be higher than about 2915mm place, basic bottom on concrete barrier, the corresponding herein upper end that is installed in the acoustical board in the concrete barrier groove, sectional dimension is 102mm * 2000mm, the thickness of representing this place's concrete barrier 1 is 102mm, width is 2000mm, and the reinforcing bar in the corresponding concrete barrier is the reinforcing bar of 10 φ 12mm.
Operating mode 1: calculate vertical force N=1.70kNkN/m, lateral force F=2.30kN, calculated bending moment W=1.44kN*m/m;
Operating mode 2: calculate vertical force N=1.70kN/m, lateral force F=-2.30N, calculated bending moment W=-1.44kN*m/m;
Operating mode 3: calculate vertical force N=1.70kN/m, lateral force F=2.90kN/m, calculated bending moment W=1.81kN*m/m;
Operating mode 4: calculate vertical force N=1.70kN/m, lateral force F=-2.90kN/m, calculated bending moment W=-1.81kN*m/m;
Table 7
| Sequence number | Vertical force N (kN/m) | Lateral force F (kN/m) | Moment of flexure W (kN*m/m) |
| |
1.70 | 2.30 | 1.44 |
| |
1.70 | -2.30 | -1.44 |
| |
1.70 | 2.90 | 1.81 |
| |
1.70 | -2.90 | -1.81 |
As calculated, reinforcing bar maximum stress σ=32.60Mpa, concrete maximum crushing stress are σ h=2.67Mpa, crack width ω=0.05mm.Meet the demands!
Tired calculating:
Reloading maximal bending moment W=1.44kN*m/m when operating mode 1, operating mode 2, operating mode 3, operating mode 4 tired calculating, train moves 210 pairs every day, considers, meets the demands 60 years service lives.
From top correlation analysis we as can be seen, the integrated precast concrete sound barrier unit board of present embodiment can satisfy the requirement of passenger dedicated railway line to sound barrier fully.
In the present embodiment, the thickness of integrated precast concrete sound barrier unit board successively decreases with the increase of height, this is because the pulsating force that the upper end of sound barrier is subjected to increases with the height of sound barrier to be reduced, so the thickness on sound barrier top does not just need to be of uniform thickness with the bottom of sound barrier.So also can save wide variety of materials.Certainly, the thickness of integrated precast concrete sound barrier unit board can be made the integrated precast concrete sound barrier unit board of a uniform thickness, only the thickness on top need be made with the bottom to be of uniform thickness.
Claims (7)
1. an integrated precast concrete sound barrier unit board is characterized in that, described integrated precast concrete sound barrier unit board comprises concrete barrier (1), and the acoustical board (2) that is arranged on concrete barrier (1) inwall.
2. integrated precast concrete sound barrier unit board as claimed in claim 1 is characterized in that described acoustical board (2) is arranged in the groove of concrete barrier (1) inwall.
3. integrated precast concrete sound barrier unit board as claimed in claim 2, it is characterized in that, described acoustical board (2) is connected by bolt in the groove of concrete barrier (1) inwall, fills bonding agent between described acoustical board (2) and concrete barrier (1) inwall.
4. integrated precast concrete sound barrier unit board as claimed in claim 1 is characterized in that, the lateral surface of described acoustical board (2) and concrete barrier (1) inwall are positioned at same plane.
5. integrated precast concrete sound barrier unit board as claimed in claim 4 is characterized in that the thickness of described concrete barrier (1) dwindles gradually from the bottom to the top.
6. integrated precast concrete sound barrier unit board as claimed in claim 1 is characterized in that, described integrated precast concrete sound barrier unit board is connected to basis (3) by concrete cast-in-situ.
7. integrated precast concrete sound barrier unit board as claimed in claim 4 is characterized in that the top of described concrete barrier (1) is provided with penetrating sound barrier.
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|---|---|---|---|
| CNU2007200801289U CN201053107Y (en) | 2007-06-29 | 2007-06-29 | Integrated precast concrete sound barrier unit plate |
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| CNU2007200801289U CN201053107Y (en) | 2007-06-29 | 2007-06-29 | Integrated precast concrete sound barrier unit plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906759A (en) * | 2010-07-29 | 2010-12-08 | 成都市新筑路桥机械股份有限公司 | Integral type sound barrier |
| CN102102345A (en) * | 2010-12-31 | 2011-06-22 | 中铁二院工程集团有限责任公司 | Prestress concrete noise barrier sound absorption inserting plate for high speed railway |
| CN105544420A (en) * | 2016-02-29 | 2016-05-04 | 淄博北辰环保科技有限公司 | On-site one-time pouring molding technology for nonmetal sound barrier on traffic road |
| CN111648262A (en) * | 2020-06-15 | 2020-09-11 | 山西尚风抑风墙科技有限公司 | Non-metallic sound barrier |
-
2007
- 2007-06-29 CN CNU2007200801289U patent/CN201053107Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906759A (en) * | 2010-07-29 | 2010-12-08 | 成都市新筑路桥机械股份有限公司 | Integral type sound barrier |
| CN101906759B (en) * | 2010-07-29 | 2012-10-31 | 成都市新筑路桥机械股份有限公司 | Integral type sound barrier |
| CN102102345A (en) * | 2010-12-31 | 2011-06-22 | 中铁二院工程集团有限责任公司 | Prestress concrete noise barrier sound absorption inserting plate for high speed railway |
| CN102102345B (en) * | 2010-12-31 | 2014-03-12 | 中铁二院工程集团有限责任公司 | Prestress concrete noise barrier sound absorption inserting plate for high speed railway |
| CN105544420A (en) * | 2016-02-29 | 2016-05-04 | 淄博北辰环保科技有限公司 | On-site one-time pouring molding technology for nonmetal sound barrier on traffic road |
| CN111648262A (en) * | 2020-06-15 | 2020-09-11 | 山西尚风抑风墙科技有限公司 | Non-metallic sound barrier |
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