CN108193601A - A kind of method for bridge construction - Google Patents
A kind of method for bridge construction Download PDFInfo
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- CN108193601A CN108193601A CN201810015961.8A CN201810015961A CN108193601A CN 108193601 A CN108193601 A CN 108193601A CN 201810015961 A CN201810015961 A CN 201810015961A CN 108193601 A CN108193601 A CN 108193601A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The present invention discloses a kind of method for bridge construction, belongs to engineering construction field.The present invention a kind of method for bridge construction include abutment construction, abutment construction, pontic construction and pontic maintenance and etc..A kind of method for bridge construction of the present invention is not with bearing capacity is being influenced, and guarantee meets carrying demand, effectively reduction dead weight, increase tensile strength, increases the span of concrete arch-type bridge；It is further adapted for being built in flow velocity and passes through, the valley with mountain torrents hidden danger etc. compared with mass-flow.
Description
Technical field
The present invention relates to a kind of construction methods, relate in particular to a kind of method for bridge construction.
Background technology
Arch bridge refer in perpendicular using encircle as the main supporting member of structure bridge, using bear axial compressive force as
Bridge of the main arch ring or arch rib as main supporting member, arch structure are made of arch ring (arch rib) and its bearing.China is built
The history of arch bridge is very long, such as famous The Zhaozhou Bridge, Lugouqiao etc. are arch bridge.Arch bridge is built now, is to use concrete
Arch ring is built instead of building stones, structural form and stone arch bridge are similar.Reinforced concrete arch bridge is adopted more because the construction of hinge is not disposable
It is in the majority with deck type or half-through only using double hinges or three-hinged arch in small span with fixed arch.Due to concrete material can
Plasticity, it is more easy to molding decorative than steel arch bridge, can build up the arch bridge of various moulding, different bent such as the overhead valley arch bridge of multispan
The arch bridge of linear (circular arc, ellipse, parabola, catenary etc.), and it is detached from the piece arch of stone arch bridge traditional form, truss arch etc..
Another kind of common arch bridge now is steel arch bridge, the arch bridge type that upper part structural steel is built.Its advantage is across ability
Greatly, and dead weight is most light in all arch bridges；Shortcoming is complicated, since three-hinged arch steel arch bridge does not have to generally, so over the ground
Base requirement is high, and cost is high, and maintenance cost is high.Suitable for Longspan Bridge.Therefore the bridge of the large spans such as general cross a river, over strait
Liang Jun is using steel arch bridge.And in shorter span, in the construction process such as highway, railway, for short-range
Valley, the hilltop are jumped, and generally then use reinforced concrete arch bridge.The processing of such bridge and more convenient, the short time limit of manufacture, still
Since concrete gravity is larger, tensile strength is very low, and span ability is small, but if bridge is constructed using lightweight concrete,
Can then large effect be generated to pontic bearing capacity, it is impossible to meet the carrying demand to bridge such as highway, railway.Separately
On the one hand the concrete arch-type bridge built in the valley that some have flowing water, concrete resist impact capacity compared with high speed water flow compared with
Weak, generation mountain torrents are larger to the loss of bridge especially abutment when natural calamities in valley sometimes, in addition concrete itself
Inevitably cracking generates gap, therefore such concrete arch-type bridge needs frequently to safeguard, the maintenance cost in later stage is higher.
Invention content
The goal of the invention of the present invention is：In view of the above problems, providing one kind is not influencing bearing capacity, ensures
Meet carrying demand, effectively reduce dead weight, increase tensile strength, increase the span of concrete arch-type bridge；It is further adapted for being built in
Have flow velocity compared with mass-flow by, have mountain torrents hidden danger valley etc. method for bridge construction.
The technical solution adopted by the present invention is as follows：
A kind of method for bridge construction, it is characterised in that include the following steps：
Step 1, abutment construction, and water blocking processing is carried out to the abutment；
Step 2, abutment construction, in the work progress of each abutment, two sides construct and add floor, each
The floor makes rib using concrete casting triangular steel plate, and the length-width ratio of the floor is less than the floor and the rib
The length ratio for the abutment that plate connects；
Step 3, pontic construction, the pontic construction include arch seat construction, arch ring construction in order, and side wall construction and shield arch are applied
Work, the side wall construction are included in both sides at the top of arch ring and laterally add cantilever, and vertically set in two outside of skewback
Oblique foot is put, there is angle between the oblique foot and cantilever, the angle of the angle is more than 100 °；
Step 4, pontic maintenance.
By adopting the above-described technical solution, carrying out water blocking processing to abutment, abutment can be increased in face of larger flow velocity water
The resistance stress of impact is flowed, avoids erosion of the flow to concrete structure；The tensile strength of abutment can be increased by floor, from
And increase the span of concrete-bridge；And side wall can further assist increasing the tensile strength of pontic, cantilever and oblique foot structure
Into a trapezoid support, the load-bearing capacity of pontic can be increased, and it is also the Neng Goupei by being calculated repeatedly to press from both sides angle degree
The minimum angles for realizing and increasing load-bearing and keeping tensile strength are closed, when the angle between oblique foot and cantilever is less than 100 °, can be made
The stability for obtaining entire crossstructure is affected, so as to generate negatively influencing to the tensile strength of entire bridge.
A kind of method for bridge construction of the present invention, the abutment construction include the following steps in order：Foundation pit is dug, is constructed
Setting-out, model sheetinstallat, inspection, concreting, form removal, concrete curing, during the concreting process, using loaded concrete with
Bar construction pours column structure pedestal, then pours complete foundation pit on the outside of agent structure with foam concrete.
By adopting the above-described technical solution, the main body rack and load-carrying members of abutment still use armored concrete knot
Structure can ensure the bearing stress of abutment, and carry out foundation pit filling by foam concrete, can mitigate bridge total quality,
The naturally molding stomata of foam concrete simultaneously, can provide expansion joint for bridge, slow down the time of concrete cracking.
The amount ratio of a kind of method for bridge construction of the present invention, the loaded concrete and foam concrete is more than 1.2.
By adopting the above-described technical solution, the load-bearing capacity of foam concrete has larger gap with loaded concrete,
The amount ratio of the two is minimum, which to be limited to 1.2, can ensure the load-bearing capacity of abutment, when the dosage of foam concrete is more than the ratio
Afterwards, the load-bearing capacity of pontic can be caused drastically to decline.
A kind of method for bridge construction of the present invention, the abutment construction include the following steps in order：Surveying setting-out, reinforcing bar
Lifting, template processing and installation, casting concrete, form removal maintenance.
A kind of method for bridge construction of the present invention, the arch ring construction includes the following steps, after first piling up arch springing with building stones,
Using loaded concrete pouring molding, Side Template is used into between-line spacing in arch springing and arch junction；The junction of arch and vault
Using Side Template into between-line spacing；Finally arch ring one-piece casting is molded using foam concrete, and fills up all hollow joints.
By adopting the above-described technical solution, concrete can be improved into between-line spacing to several key points by Side Template
The tensile property of pontic makes up the brittleness of concrete material, so as to increase the span of concrete arch-type bridge.
Under the premise of ensureing that entire bridge main body mechanism meets rigidity, bearing strength, just using foam concrete to bridge
Body is filled, and it is unnecessary important to mitigate pontic, so as to which concrete be avoided to be generated due to dead weight to span
It influences.
A kind of method for bridge construction of the present invention, " work " font baffle is made by armored concrete in the Side Template, described
Setting is by pouring arm in two long side of I-shaped baffle, and the arm that pours is staggered, the intermediate arm of the I-shaped baffle
Length is located in the range of 7-15cm, and the Side Template surface is covered with wire netting.
By adopting the above-described technical solution, Side Template is rational in infrastructure, there is stronger tensile capacity, while surface is covered
The wire netting of lid can ensure the switching performance of linkage interface between two material of loaded concrete and Side Template.
A kind of method for bridge construction of the present invention, the shield arch sequence of construction include the following steps that shield encircles foundation construction, shield
Encircle concrete construction, shield arch maintenance.
A kind of method for bridge construction of the present invention, the water blocking processing includes the following steps, at the chance water surface interval of abutment
Water is set to keep off, each water gear front end sets triangle cutwater end obliquely, and the top at the triangle cutwater end is in
Arc, the radian of the arc are in the range of 40-90 °；The end at the triangle cutwater end keeps off highest point phase with water
Even, the level height at the triangle cutwater end is less than the level height of water gear highest point.
By adopting the above-described technical solution, the cutwater end of water gear front end can be good at water when water flow is larger
Flow point flow to both sides, so as to reduce the shearing force of flow, reduces impact of the high flow rate flow to abutment, extends the abutment service life, drop
Low-maintenance cost；And the radian of cutwater end front end can reduce impact of the high-velocity flow to its own, while improve and water is divided to imitate
Fruit.When radian is less than 40 °, since front end is excessively sharp, it can cause after water is divided, the flow of two separation still cuts abutment effect
Shear force, at the same it is larger to the impact of tip in itself；And with tip radian it is more next big when, flow is more next to the impact of tip in itself
It is smaller, but shunting effect is worse and worse, is 90 ° by critical value is calculated, not only can guarantee good point of water effect, but also can make
Flow is to the impact force at tip in a rational range.
A kind of method for bridge construction of the present invention, the water keep off top to being externally provided with convex edge.
By adopting the above-described technical solution, further increase shunting direction of the water gear to flow so that flow is to abutment
Shearing force further reduce.
A kind of method for bridge construction of the present invention, each described rib offers telescopic hole in the middle part of its bevel edge, each
The telescopic hole total volume set on a rib is less than 4m3。
By adopting the above-described technical solution, telescopic hole can help flow to pass through, the impact to abutment, while energy are reduced
Dilation matrices during load-bearing are enough provided for concrete structure；But if perforated area is excessive, the rigidity of rib can be reduced,
Therefore the upper limit of 4m3 perforated areas thus is obtained.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1st, bearing capacity is not being influenced, guarantee meets carrying demand, effectively reduces dead weight, increases tensile strength, increases concrete
The span of arch bridge；It is further adapted for being built in flow velocity and passes through, the valley with mountain torrents hidden danger etc. compared with mass-flow；
2nd, water blocking processing is carried out to abutment, the resistance stress that abutment faces larger flow velocity water impact can be increased, avoid flow
Erosion to concrete structure；The tensile strength of abutment can be increased by floor, so as to increase the span of concrete-bridge；And
Side wall can further assist increasing the tensile strength of pontic, and cantilever forms a trapezoid support with oblique foot, can increase bridge
The load-bearing capacity of body.
Description of the drawings
Fig. 1 is the structure diagram of rib；
Fig. 2 is the structure diagram of Side Template.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Unmentioned work progress, bridge excavation etc. in the present invention, using this field standard construction process, this reality
It applies in example and only pair to be illustrated with construction process difference customary in the art.
As shown in Figure 1 to Figure 2, a kind of method for bridge construction, includes the following steps：
Step 1, abutment construction, and water blocking processing is carried out to the abutment；Abutment construction includes but not limited to following walk in order
Suddenly：Dig foundation pit, construction lofting, model sheetinstallat, inspection, concreting, form removal, concrete curing during concreting process, adopts
Column structure pedestal is poured, then pour complete base on the outside of agent structure with foam concrete with loaded concrete and bar construction
The amount ratio of hole, loaded concrete and foam concrete is more than 1.2.After abutment completes construction, in the chance water surface of each abutment
Water gear is arranged at intervals, each water keeps off front end and makes a triangle cutwater end by mold enclosing and with concreting,
Obliquely, top is arc-shaped for triangle cutwater end top surface, and the radian of arc is 40 °；The end at triangle cutwater end with
Water gear highest point is connected, and water keeps off top to being externally provided with convex edge.
Step 2, abutment construction, including but not limited to following steps, surveying setting-out, reinforcing bar lifting, template are processed in order
And installation, casting concrete, form removal maintenance.In the work progress of each abutment, two sides, which are constructed, adds floor, each
A floor makes rib using concrete casting triangular steel plate, and the length-width ratio of floor is less than the bridge that floor connects with floor
The length ratio of platform；Each rib offers telescopic hole in the middle part of its bevel edge, the telescopic hole total volume set on each rib
Less than 4m3。
Step 3, pontic construction, pontic construction include arch seat construction, arch ring construction in order, and side wall construction and shield arch are applied
Work, side wall construction are included in both sides at the top of arch ring and laterally add cantilever, and vertically set oblique foot in two outside of skewback, tiltedly
There is angle, the angle of angle is more than 100 ° between foot and cantilever；Arch ring construction includes but not limited to following steps, first uses building stones
After piling up arch springing, using loaded concrete pouring molding, Side Template is used into between-line spacing in arch springing and arch junction；Arch and arch
The junction on top uses Side Template into between-line spacing；Finally arch ring one-piece casting is molded using foam concrete, and fills up all
Hollow joint." work " font baffle is made by armored concrete in Side Template, sets by pouring arm, pours in two long side of I-shaped baffle
Arm is staggered, and the intermediate arm lengths of I-shaped baffle are 7cm, and Side Template surface is covered with wire netting.Shield arch sequence of construction
Including but not limited to following steps, shield arch foundation construction, shield arch concrete construction, shield arch maintenance.
Step 4, pontic maintenance.
Embodiment 2
As shown in Figure 1 to Figure 2, a kind of method for bridge construction, includes the following steps：
Step 1, abutment construction, and water blocking processing is carried out to the abutment；Abutment construction includes but not limited to following walk in order
Suddenly：Dig foundation pit, construction lofting, model sheetinstallat, inspection, concreting, form removal, concrete curing during concreting process, adopts
Column structure pedestal is poured, then pour complete base on the outside of agent structure with foam concrete with loaded concrete and bar construction
The amount ratio of hole, loaded concrete and foam concrete is more than 1.2.After abutment completes construction, in the chance water surface of each abutment
Water gear is arranged at intervals, each water keeps off front end and makes a triangle cutwater end by mold enclosing and with concreting,
Obliquely, top is arc-shaped for triangle cutwater end top surface, and the radian of arc is 90 °；The end at triangle cutwater end with
Water gear highest point is connected, and water keeps off top to being externally provided with convex edge.
Step 2, abutment construction, including but not limited to following steps, surveying setting-out, reinforcing bar lifting, template are processed in order
And installation, casting concrete, form removal maintenance.In the work progress of each abutment, two sides, which are constructed, adds floor, each
A floor makes rib using concrete casting triangular steel plate, and the length-width ratio of floor is less than the bridge that floor connects with floor
The length ratio of platform；Each rib offers telescopic hole in the middle part of its bevel edge, the telescopic hole total volume set on each rib
Less than 4m3。
Step 3, pontic construction, pontic construction include arch seat construction, arch ring construction in order, and side wall construction and shield arch are applied
Work, side wall construction are included in both sides at the top of arch ring and laterally add cantilever, and vertically set oblique foot in two outside of skewback, tiltedly
There is angle, the angle of angle is more than 100 ° between foot and cantilever；Arch ring construction includes but not limited to following steps, first uses building stones
After piling up arch springing, using loaded concrete pouring molding, Side Template is used into between-line spacing in arch springing and arch junction；Arch and arch
The junction on top uses Side Template into between-line spacing；Finally arch ring one-piece casting is molded using foam concrete, and fills up all
Hollow joint." work " font baffle is made by armored concrete in Side Template, sets by pouring arm, pours in two long side of I-shaped baffle
Arm is staggered, and the intermediate arm lengths of I-shaped baffle are 15cm, and Side Template surface is covered with wire netting.Shield arch sequence of construction
Including but not limited to following steps, shield arch foundation construction, shield arch concrete construction, shield arch maintenance.
Step 4, pontic maintenance.
Embodiment 3
As shown in Figure 1 to Figure 2, a kind of method for bridge construction, includes the following steps：
Step 1, abutment construction, and water blocking processing is carried out to the abutment；Abutment construction includes but not limited to following walk in order
Suddenly：Dig foundation pit, construction lofting, model sheetinstallat, inspection, concreting, form removal, concrete curing during concreting process, adopts
Column structure pedestal is poured, then pour complete base on the outside of agent structure with foam concrete with loaded concrete and bar construction
The amount ratio of hole, loaded concrete and foam concrete is more than 1.2.After abutment completes construction, in the chance water surface of each abutment
Water gear is arranged at intervals, each water keeps off front end and makes a triangle cutwater end by mold enclosing and with concreting,
Obliquely, top is arc-shaped for triangle cutwater end top surface, and the radian of arc is 60 °；The end at triangle cutwater end with
Water gear highest point is connected, and water keeps off top to being externally provided with convex edge.
Step 2, abutment construction, including but not limited to following steps, surveying setting-out, reinforcing bar lifting, template are processed in order
And installation, casting concrete, form removal maintenance.In the work progress of each abutment, two sides, which are constructed, adds floor, each
A floor makes rib using concrete casting triangular steel plate, and the length-width ratio of floor is less than the bridge that floor connects with floor
The length ratio of platform；Each rib offers telescopic hole in the middle part of its bevel edge, the telescopic hole total volume set on each rib
Less than 4m3。
Step 3, pontic construction, pontic construction include arch seat construction, arch ring construction in order, and side wall construction and shield arch are applied
Work, side wall construction are included in both sides at the top of arch ring and laterally add cantilever, and vertically set oblique foot in two outside of skewback, tiltedly
There is angle, the angle of angle is more than 100 ° between foot and cantilever；Arch ring construction includes but not limited to following steps, first uses building stones
After piling up arch springing, using loaded concrete pouring molding, Side Template is used into between-line spacing in arch springing and arch junction；Arch and arch
The junction on top uses Side Template into between-line spacing；Finally arch ring one-piece casting is molded using foam concrete, and fills up all
Hollow joint." work " font baffle is made by armored concrete in Side Template, sets by pouring arm, pours in two long side of I-shaped baffle
Arm is staggered, and the intermediate arm lengths of I-shaped baffle are 10cm, and Side Template surface is covered with wire netting.Shield arch sequence of construction
Including but not limited to following steps, shield arch foundation construction, shield arch concrete construction, shield arch maintenance.
Step 4, pontic maintenance.
Embodiment 4
As shown in Figure 1, rib structure is arranged in parallel in including two triangle rib on right angle frame, rib inner support structure is by steel plate
It is made, right angle frame and floor agent structure are formed by concreting, are connected between two ribs by concrete and are formed top end opening
The structure of bottom lock inner hollow, each rib offer telescopic hole in the middle part of its bevel edge, and telescopic hole is non-through hole, often
The telescopic hole total volume set on one rib is less than 4m3。
Embodiment 5
As shown in Fig. 2, " work " font baffle is made by armored concrete in Side Template, setting is by pouring in two long side of I-shaped baffle
Arm is built, arm is poured and is staggered, the intermediate arm lengths of I-shaped baffle are located in the range of 7-15cm, and Side Template surface is covered
It is stamped wire netting
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made within principle etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of method for bridge construction, it is characterised in that include the following steps：
Step 1, abutment construction, and water blocking processing is carried out to the abutment；
Step 2, abutment construction, in the work progress of each abutment, two sides construct and add floor, each
The floor makes rib using concrete casting triangular steel plate, and the length-width ratio of the floor is less than the floor and the rib
The length ratio for the abutment that plate connects；
Step 3, pontic construction, the pontic construction include arch seat construction, arch ring construction in order, and side wall construction and shield arch are applied
Work, the side wall construction are included in both sides at the top of arch ring and laterally add cantilever, and vertically set in two outside of skewback
Oblique foot is put, there is angle between the oblique foot and cantilever, the angle of the angle is more than 100 °；
Step 4, pontic maintenance.
2. a kind of method for bridge construction as described in claim 1, it is characterised in that：The abutment construction includes following in order
Step：Dig foundation pit, construction lofting, model sheetinstallat, inspection, concreting, form removal, concrete curing, the concreting
Cheng Shi pours column structure pedestal, then poured on the outside of agent structure with foam concrete using loaded concrete and bar construction
Complete foundation pit.
3. a kind of method for bridge construction as claimed in claim 2, it is characterised in that：The loaded concrete and foam concrete
Amount ratio is more than 1.2.
4. a kind of method for bridge construction as described in claim 1, it is characterised in that：The abutment construction includes following in order
Step：Surveying setting-out, reinforcing bar lifting, template processing and installation, casting concrete, form removal maintenance.
5. a kind of method for bridge construction as described in claim 1, it is characterised in that：The arch ring, which is constructed, to be included the following steps,
After first piling up arch springing with building stones, using loaded concrete pouring molding, in arch springing and arch junction using Side Template into the ranks
Every；The junction of arch and vault uses Side Template into between-line spacing；Finally arch ring one-piece casting is molded using foam concrete,
And fill up all hollow joints.
6. a kind of method for bridge construction as claimed in claim 5, it is characterised in that：The Side Template is made of armored concrete
" work " font baffle, setting is by pouring arm in two long side of I-shaped baffle, and the arm that pours is staggered, " work "
The intermediate arm lengths of font baffle are located in the range of 7-15cm, and the Side Template surface is covered with wire netting.
7. a kind of method for bridge construction as described in claim 1, it is characterised in that：The shield arch sequence of construction includes following step
Suddenly, shield arch foundation construction, shield arch concrete construction, shield arch maintenance.
8. a kind of method for bridge construction as described in any one claim in claim 1-7, it is characterised in that：The gear
Water process includes the following steps, is arranged at intervals water gear in the chance water surface of abutment, each water gear front end sets triangle obliquely
Cutwater end, the top at the triangle cutwater end is arc-shaped, and the radian of the arc is in the range of 40-90 °；Institute
The end for stating triangle cutwater end is connected with water gear highest point, and the level height at the triangle cutwater end is less than water and keeps off most
The level height of eminence.
9. a kind of method for bridge construction as claimed in claim 8, it is characterised in that：The water keeps off top to being externally provided with convex edge.
10. a kind of method for bridge construction as claimed in claim 8, it is characterised in that：Each described rib is in its bevel edge
Portion offers telescopic hole, and the telescopic hole total volume set on each described rib is less than 4m3。
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| CN113502747A (en) * | 2021-07-09 | 2021-10-15 | 杭州市城市建设基础工程有限公司 | Water quantity change mountainous area bridge construction method |
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| CN108193601B (en) | 2020-12-25 |
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