CN202559224U - Masonry arch bridge using lightweight concrete as arch upper packing - Google Patents
Masonry arch bridge using lightweight concrete as arch upper packing Download PDFInfo
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- CN202559224U CN202559224U CN2012201513326U CN201220151332U CN202559224U CN 202559224 U CN202559224 U CN 202559224U CN 2012201513326 U CN2012201513326 U CN 2012201513326U CN 201220151332 U CN201220151332 U CN 201220151332U CN 202559224 U CN202559224 U CN 202559224U
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Abstract
The utility model discloses a masonry arch bridge using lightweight concrete as arch upper packing. The masonry arch bridge using lightweight concrete as arch upper packing comprises a main arch ring (1), a spandrel arch (3) and an arch upper packing layer (2), and is characterized in that the arch upper packing layer (2) is a lightweight concrete packing layer, the performance density of the lightweight concrete packing layer is 800 kg / m3 - 1950 kg / m3, the top surface of the arch upper packing layer (2) is provided with a leveling layer (4), a water-proof layer (7) is further installed between the main arch ring (1) and the arch upper packing layer (2), sawn joints (5) are installed along the horizontal direction of a bridge, the extreme lower position of each block of packing formed by every two sawn joints and two sides of a side wall are provided with water seepage pipes (6), and the water-proof layer (7) is formed by laying of permanent condensate liquid or bitumen. The masonry arch bridge using lightweight concrete as arch upper packing can effectively improve stress of an arch, lowers dead load internal force, and enhances live load carrying capacity.
Description
Technical field
The utility model belongs to the structure design and the material selection field of masonry arch bridge; Related in particular to a kind of light weight concrete construction that uses and gone up the masonry arch bridge of filler as arch, its job practices can be applied to newly-built masonry arch bridge construction arch and go up filler and reinforce on the arch of Central Plains changing of filler at the labour masonry arch bridge and fill out.
Background technology
Because masonry arch bridge main arch circle is a shaped form, vehicle can't directly go on cambered surface generally speaking, so between runway system and main arch circle, need member and the filler that transmits load, these fillers are referred to as arch and go up filler.To gather materials on the spot in order reducing cost with filler on the face arch, to adopt gravel, rubble, rough sand or cobble folder clay also to tamp usually; When filler not during easy to drawing materials, often use instead and build the formula spandrel construction by laying bricks or stones, just adopt dry-laid masonry or build plain concrete and go up filler as arch.
The tradition arch is gone up the filler apparent density and is generally 1800kg/m
3～2450kg/m
3, heavy a lot of than light weight concrete construction, make the internal force of arch also big, be unfavorable for the stressed of structure.And the water permeability of these materials is not good enough, and rainwater infiltration back is expanded big to the pressure change of side wall, makes side wall ftracture; Water infiltrates filler deadweight increase on the rear arch, reduces the ability of the vehicle load of arch bridge; Infiltration flow to the main arch circle, causes place, crack corrosion of steel bar, weakens area of reinforcement, and reinforcing bar expands and causes concrete spalling after the corrosion, has a strong impact on the supporting capacity and the useful life longevity of arch bridge.Do not see at present yet the relevant report that adopts light weight concrete construction to go up the job practices effectively of filler as the masonry arch bridge arch is arranged.
Summary of the invention
The purpose of the utility model is the deficiency to prior art, provides a kind of light weight concrete construction that uses as encircleing the masonry arch bridge of going up filler, can improve the stressed of arch effectively, reduces dead load internal force, improves the mobile load supporting capacity.
To achieve these goals; The utility model has adopted following technical scheme: a kind of masonry arch bridge that uses light weight concrete construction to go up filler as arch; Comprise packing layer on main arch circle, spandrel arch and the arch; It is characterized in that: packing layer is the light weight concrete construction packing layer on the arch, and the apparent density of light weight concrete construction packing layer is 800kg/m
3～1750kg/m
3Main arch circle and arch are gone up between the packing layer and are provided with a waterproofing course; The packing layer end face is provided with a leveling layer on arch; Laterally be provided with saw kerf along bridge; Its lowest position of every block of filler between two saw kerfs and the both sides of side wall are provided with soakaway trench.
Described waterproofing course adopts forever lime set or asphalt paving to form.
The material of described light weight concrete construction packing layer is selected from one or more in sand-free coarse porous concrete concrete, flyash-haydite concrete, leca concrete, haydites of book structure concrete, float stone or scoria concrete, self-igniting coal gangue concrete and the expanded slag pearl concrete.According to the stressing conditions of main arch circle, at the lightweight concrete material of different longitudinal position employing different apparent density, the internal force situation that can adjust the main arch circle is an optimum state.
Described leveling layer is that thickness is the plain concrete layer of 8cm～10cm.The leveling layer material can be selected the plain concrete of C15～C20 for use.Leveling layer can prevent the cracking of lightweight concrete material under the wheel load effect, and the planeness of adjustment light weight concrete construction is beneficial to deck paving.
Described saw kerf is no more than 3m in the longitudinal pitch of main arch collar region, and the saw kerf in the spandrel arch zone then is arranged on vault, the arch springing place of spandrel arch.
The width of described saw kerf is 20～40mm, and adopts the bitumastic backfill.
Described soakaway trench is the PVC soakaway trench of diameter 10～20mm, and side wall 10～20mm is stretched out at the soakaway trench two ends.Then gutter is set at the arch bridge bridge floor, prevents that a large amount of rainwater from infiltrating arch and going up packing layer according to conventional method.
The modulus of elasticity of the material of described light weight concrete construction layer and intensity are that 1/4～1/2 of main arch loop material is the best.
When described masonry arch bridge adopted crown section internal force control design, packing layer was that to build apparent density be 760kg/m on the arch in 1/4 to 3/4 section of masonry arch bridge span L
3～1350kg/m
3The light weight concrete construction layer that forms of light weight concrete construction, packing layer is that to build apparent density be 1350kg/m on the arch of other section
3～1950kg/m
3The light weight concrete construction layer that forms of light weight concrete construction.
When described masonry arch bridge adopted the internal force control design of arch springing cross section, packing layer was that to build apparent density be 1350kg/m on the arch in 1/4 to 3/4 section of masonry arch bridge span L
3～1950kg/m
3The light weight concrete construction layer that forms of light weight concrete construction, packing layer is that to build apparent density be 760kg/m on the arch of other section
3～1350kg/m
3The light weight concrete construction layer that forms of light weight concrete construction.
Crown section internal force control design and arch springing cross section internal force control design are masonry arch bridge methods for designing commonly used.
The advantage of the utility model:
1. the top arch is gone up alleviating of filler deadweight; That is the reducing of the suffered non-uniform Distribution load of arch ring; The shearing of arch ring arbitrfary point, moment of flexure and axial force all reduce, so packing layer is the light weight concrete construction layer owing to encircle upward; Promptly adopt light weight concrete construction as arch go up filler can with arch ring internal force will reduce nearly 1 times, improved the supporting capacity of bridge greatly.
2. according to calculating comparison, can improve the stressed of arch:
(1) amount of deflection and the moment of flexure at the vault place all has obvious decline, and average amount of deflection reduces by 23%, and maximum defluxion reduces by 29%; Average moment of flexure reduces by 15%, and maximal bending moment then can reduce by 27%;
(2) the stressed character of axle power at the vault place has obvious change, arch rib axle power (increment) pressurized when not considering the filler bending rigidity, when considering the filler bending rigidity then arch rib axle power (increment) drawn;
(3) both differ less than 10% with axle power in the moment of flexure at arch springing place, and stressed all very even at each sheet arch rib at arch springing place.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is the draw sketch map of saw kerf of the utility model one embodiment.
Fig. 3 is the draw sketch map of soakaway trench of the utility model one embodiment.
Fig. 4 keeps supplying the curve map of filler modulus of elasticity to the influence of main arch circle maximum distortion.
Reference numeral: main arch circle 1, packing layer 2 on the arch, spandrel arch 3, leveling layer 4, saw kerf 5, soakaway trench 6, waterproofing course 7.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Embodiment 1:
Shown in accompanying drawing; Use light weight concrete construction to go up the masonry arch bridge of filler as arch; Take crown section internal force control design, comprise that main arch circle 1, spandrel arch 3 and arch go up packing layer 2, packing layer 2 is that to build apparent density be 1000kg/m on the arch in 1/4 to 3/4 section of masonry arch bridge span L
3The light weight concrete construction layer that forms of light weight concrete construction, packing layer 2 is that to build apparent density be 1800kg/m on the arch of other section
3The light weight concrete construction layer that forms of light weight concrete construction; Packing layer 2 end faces are provided with a leveling layer 4 on arch, and leveling layer 4 is that thickness is the plain concrete layer of 8cm, material selection C15 plain concrete; Described main arch circle 1 and arch are gone up between the packing layer 2 and also are provided with a waterproofing course 7, and waterproofing course 7 adopts forever lime set or asphalt paving to form; Laterally be provided with the saw kerf 5 that width is 20mm along bridge, saw kerf 5 is no more than 3m in the longitudinal pitch in main arch circle 1 zone, and 5 of saw kerfs in spandrel arch 3 zones are arranged on vault, the arch springing place of spandrel arch 3, and saw kerf 5 adopts the bitumastic backfill; Its lowest position of every block of filler between two saw kerfs 5 and the both sides of side wall are provided with the soakaway trench 6 that diameter is 10mm, and side wall 10mm is stretched out at soakaway trench 6 two ends; Zones of different at main arch circle 1; Go up packing layer 2 according to its different stressing conditions arch and select for use the different light weight concrete construction of apparent density to build, light weight concrete construction comprises sand-free coarse porous concrete concrete, flyash-haydite concrete, leca concrete, haydites of book structure concrete, float stone or scoria concrete, self-igniting coal gangue concrete and expanded slag pearl concrete.The structure design and the material selection of the masonry arch bridge of the utility model are reasonable, have improved the stressed of arch bridge, reduce dead load internal force, improve the mobile load supporting capacity.
Embodiment 2:
Shown in accompanying drawing; Use light weight concrete construction to go up the masonry arch bridge of filler as arch; Take arch springing cross section internal force control design, comprise that main arch circle 1, spandrel arch 3 and arch go up packing layer 2, packing layer 2 is that to build apparent density be 1700kg/m on the arch in 1/4 to 3/4 section of masonry arch bridge span L
3The light weight concrete construction layer that forms of light weight concrete construction, packing layer 2 is that to build apparent density be 800kg/m on the arch of other section
3The light weight concrete construction layer that forms of light weight concrete construction; Packing layer 2 end faces are provided with a leveling layer 4 on arch, and leveling layer 4 is that thickness is the plain concrete layer of 10cm, material selection C20 plain concrete; Described main arch circle 1 and arch are gone up between the packing layer 2 and also are provided with a waterproofing course 7, and waterproofing course 7 adopts forever lime set or asphalt paving to form; Laterally be provided with the saw kerf 5 that width is 40mm along bridge, saw kerf 5 is no more than 3m in the longitudinal pitch in main arch circle 1 zone, and 5 of saw kerfs in spandrel arch 3 zones are arranged on vault, the arch springing place of spandrel arch 3, and saw kerf 5 adopts the bitumastic backfill; Be provided with the soakaway trench 6 that diameter is 20mm in its lowest position of the every block of filler that is made up of saw kerf 5 in twos and the both sides of side wall, side wall 20mm is stretched out at soakaway trench 6 two ends; Zones of different at main arch circle 1; Go up packing layer 2 according to its different stressing conditions arch and select for use the different light weight concrete construction of apparent density to build, light weight concrete construction comprises sand-free coarse porous concrete concrete, flyash-haydite concrete, leca concrete, haydites of book structure concrete, float stone or scoria concrete, self-igniting coal gangue concrete and expanded slag pearl concrete.The structure design and the material selection of the masonry arch bridge of the utility model are reasonable, have improved the stressed of arch bridge, reduce dead load internal force, improve the mobile load supporting capacity.
Embodiment 3:
Shown in accompanying drawing; Use light weight concrete construction to go up the masonry arch bridge of filler as arch; Take vault, arch springing cross section internal force quite to design, comprise that main arch circle 1, spandrel arch 3 and arch go up packing layer 2, packing layer 2 is that to build apparent density be the light weight concrete construction layer that the light weight concrete construction of 1250kg/m3 forms on the arch; Packing layer 2 end faces are provided with a leveling layer 4 on arch, and leveling layer 4 is that thickness is the plain concrete layer of 9cm, material selection C18 plain concrete; Described main arch circle 1 and arch are gone up between the packing layer 2 and also are provided with a waterproofing course 7, and waterproofing course 7 adopts forever lime set or asphalt paving to form; Laterally be provided with the saw kerf 5 that width is 30mm along bridge, saw kerf 5 is no more than 3m in the longitudinal pitch in main arch circle 1 zone, and 5 of saw kerfs in spandrel arch 3 zones are arranged on vault, the arch springing place of spandrel arch 3, and saw kerf 5 adopts the bitumastic backfill; Be provided with the soakaway trench 6 that diameter is 15mm in its lowest position of the every block of filler that is made up of saw kerf 5 in twos and the both sides of side wall, side wall 15mm is stretched out at soakaway trench 6 two ends; Zones of different at main arch circle 1; Go up packing layer 2 according to its different stressing conditions arch and select for use the different light weight concrete construction of apparent density to build, light weight concrete construction comprises sand-free coarse porous concrete concrete, flyash-haydite concrete, leca concrete, haydites of book structure concrete, float stone or scoria concrete, self-igniting coal gangue concrete and expanded slag pearl concrete.The structure design and the material selection of the masonry arch bridge of the utility model are reasonable, have improved the stressed of arch bridge, reduce dead load internal force, improve the mobile load supporting capacity.
Claims (8)
1. one kind is used light weight concrete construction as encircleing the masonry arch bridge of going up filler; Comprise upward packing layer (2) of main arch circle (1), spandrel arch (3) and arch; It is characterized in that: packing layer on the arch (2) is the light weight concrete construction packing layer, and the apparent density of light weight concrete construction packing layer is 760kg/m
3～1950kg/m
3Main arch circle (1) and arch are gone up between the packing layer (2) and are provided with a waterproofing course (7); Packing layer (2) end face is provided with a leveling layer (4) on arch; Laterally be provided with saw kerf (5) along bridge; Its lowest position of every block of filler between two saw kerfs (5) and the both sides of side wall are provided with soakaway trench (6).
2. use light weight concrete construction according to claim 1 is gone up the masonry arch bridge of filler as arch, it is characterized in that: described waterproofing course (7) adopts forever lime set or asphalt paving to form.
3. use light weight concrete construction according to claim 1 is as encircleing the masonry arch bridge of going up filler, and it is characterized in that: described leveling layer (4) is that thickness is the plain concrete layer of 8cm～10cm.
4. according to claim 1; 2 or 3 described use light weight concrete constructions are gone up the masonry arch bridge of filler as arch; It is characterized in that: described saw kerf (5) is no more than 3m in the longitudinal pitch in main arch circle (1) zone, and the saw kerf (5) in spandrel arch (3) zone then is arranged on vault, the arch springing place of spandrel arch (3).
5. use light weight concrete construction according to claim 4 is as encircleing the masonry arch bridge of going up filler, and it is characterized in that: the width of described saw kerf (5) is 20～40mm, and adopts the bitumastic backfill.
6. go up the masonry arch bridge of filler according to claim 1 or 5 described use light weight concrete constructions as arch, it is characterized in that: described soakaway trench (6) is the PVC soakaway trench of diameter 10～20mm, and side wall 10～20mm is stretched out at soakaway trench (6) two ends.
7. go up the masonry arch bridge of filler as arch according to claim 1 or 5 described use light weight concrete constructions; It is characterized in that: when described masonry arch bridge adopted crown section internal force control design, packing layer (2) was that to build apparent density be 760kg/m on the arch in 1/4 to 3/4 section of masonry arch bridge span L
3～1350kg/m
3The light weight concrete construction layer that forms of light weight concrete construction, packing layer on the arch of other section (2) is that to build apparent density be 1350kg/m
3～1950kg/m
3The light weight concrete construction layer that forms of light weight concrete construction.
8. go up the masonry arch bridge of filler as arch according to claim 1 or 5 described use light weight concrete constructions; It is characterized in that: when described masonry arch bridge adopted the internal force control design of arch springing cross section, packing layer (2) was that to build apparent density be 1350kg/m on the arch in 1/4 to 3/4 section of masonry arch bridge span L
3～1950kg/m
3The light weight concrete construction layer that forms of light weight concrete construction, packing layer on the arch of other section (2) is that to build apparent density be 760kg/m
3～1350kg/m
3The light weight concrete construction layer that forms of light weight concrete construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201513326U CN202559224U (en) | 2012-04-12 | 2012-04-12 | Masonry arch bridge using lightweight concrete as arch upper packing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201513326U CN202559224U (en) | 2012-04-12 | 2012-04-12 | Masonry arch bridge using lightweight concrete as arch upper packing |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587268A (en) * | 2012-04-12 | 2012-07-18 | 广西交通科学研究院 | Masonry arch bridge using lightweight concrete as arch filler |
| CN105040571A (en) * | 2015-06-09 | 2015-11-11 | 中交第二公路勘察设计研究院有限公司 | Precast reinforced concrete embedded slant-legged frame bridge |
| CN106677080A (en) * | 2017-01-09 | 2017-05-17 | 广西交通科学研究院有限公司 | Arch bridge buckling characteristic coefficient increase based half-through steel arch bridge reinforcement method |
| CN106677079A (en) * | 2017-01-09 | 2017-05-17 | 广西交通科学研究院有限公司 | Continuous arch bridge reinforcing method based on reduction of horizontal thrust of arch supports of arch bridge |
| CN106702913A (en) * | 2017-01-09 | 2017-05-24 | 广西交通科学研究院有限公司 | Reinforcement method for reverse-arch structure based on decreasing of mid-span moment of arch bridge |
| CN106836022A (en) * | 2017-01-09 | 2017-06-13 | 广西交通科学研究院有限公司 | Based on the antiarch structural strengthening method that arch bridge arch springing hogging moment reduces |
| CN106836023A (en) * | 2017-01-09 | 2017-06-13 | 广西交通科学研究院有限公司 | Based on the type concrete arch bridge reinforcement means that mid-span deflection reduces |
| CN110409303A (en) * | 2019-06-29 | 2019-11-05 | 宁波易达园林建设有限公司 | A kind of bridge abdomen fill process of steel flanged beam multiple arch bridge |
| CN110804959A (en) * | 2019-11-26 | 2020-02-18 | 山西省交通规划勘察设计院有限公司 | Beam-arch cooperative stone arch bridge reinforcing and load shedding method |
| CN112231797A (en) * | 2020-09-18 | 2021-01-15 | 中铁七局集团有限公司 | Arch bridge and road-bridge transition section mechanical analysis method based on arch filler |
-
2012
- 2012-04-12 CN CN2012201513326U patent/CN202559224U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587268A (en) * | 2012-04-12 | 2012-07-18 | 广西交通科学研究院 | Masonry arch bridge using lightweight concrete as arch filler |
| CN102587268B (en) * | 2012-04-12 | 2014-07-30 | 广西交通科学研究院 | Masonry arch bridge using lightweight concrete as arch filler |
| CN105040571A (en) * | 2015-06-09 | 2015-11-11 | 中交第二公路勘察设计研究院有限公司 | Precast reinforced concrete embedded slant-legged frame bridge |
| CN106836022A (en) * | 2017-01-09 | 2017-06-13 | 广西交通科学研究院有限公司 | Based on the antiarch structural strengthening method that arch bridge arch springing hogging moment reduces |
| CN106677079A (en) * | 2017-01-09 | 2017-05-17 | 广西交通科学研究院有限公司 | Continuous arch bridge reinforcing method based on reduction of horizontal thrust of arch supports of arch bridge |
| CN106702913A (en) * | 2017-01-09 | 2017-05-24 | 广西交通科学研究院有限公司 | Reinforcement method for reverse-arch structure based on decreasing of mid-span moment of arch bridge |
| CN106677080A (en) * | 2017-01-09 | 2017-05-17 | 广西交通科学研究院有限公司 | Arch bridge buckling characteristic coefficient increase based half-through steel arch bridge reinforcement method |
| CN106836023A (en) * | 2017-01-09 | 2017-06-13 | 广西交通科学研究院有限公司 | Based on the type concrete arch bridge reinforcement means that mid-span deflection reduces |
| CN106677079B (en) * | 2017-01-09 | 2018-06-01 | 广西交通科学研究院有限公司 | The continuous arch bridge reinforcement means reduced based on arch bridge impost horizontal thrust |
| CN106702913B (en) * | 2017-01-09 | 2018-06-01 | 广西交通科学研究院有限公司 | The antiarch structural strengthening method reduced based on arch bridge mid span moment |
| CN106836022B (en) * | 2017-01-09 | 2018-09-28 | 广西交通科学研究院有限公司 | The antiarch structural strengthening method reduced based on arch bridge arch springing hogging moment |
| CN110409303A (en) * | 2019-06-29 | 2019-11-05 | 宁波易达园林建设有限公司 | A kind of bridge abdomen fill process of steel flanged beam multiple arch bridge |
| CN110804959A (en) * | 2019-11-26 | 2020-02-18 | 山西省交通规划勘察设计院有限公司 | Beam-arch cooperative stone arch bridge reinforcing and load shedding method |
| CN110804959B (en) * | 2019-11-26 | 2021-01-26 | 山西省交通规划勘察设计院有限公司 | Beam-arch cooperative stone arch bridge reinforcing and load shedding method |
| CN112231797A (en) * | 2020-09-18 | 2021-01-15 | 中铁七局集团有限公司 | Arch bridge and road-bridge transition section mechanical analysis method based on arch filler |
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Granted publication date: 20121128 |