A kind of Straddle type monorail support rail system and its construction method
Technical field
The present invention relates to a kind of Straddle type monorail support rail system and its construction method, belong to technical field of transportation.
Background technology
With movement of population and economic development, China urban traffic congestion is on the rise, and transport structure is single, to environment shadow
The problems such as ringing big is become increasingly conspicuous, and these traffic problems are solved at all, existing transport structure form must be just adjusted.And conduct
The Monorail PC Track Girders of medium-heavy road traffic have the advantages that strong adaptability, noise are low, radius of turn is small, climbing capacity is strong, are symbols
The traffic form of China's city demand is closed, with certain development prospect.Single track support rail form is usually overhead form, with accounting for
Ground area is small, the advantages of can make full use of city space, good visual effect, but overhead track beam span it is smaller, basic and
Bridge pier quantity is more, and quantities is big, and cost is higher, it is therefore necessary to carry out technological improvement.
The content of the invention
To solve the deficiencies in the prior art, it is an object of the invention to provide a kind of Straddle type monorail support rail system and its apply
Work method, can effectively reduce overhead track girder, elevated structure bridge pier and basis while single-line railway beam span is improved
Material usage.
In order to realize above-mentioned target, the present invention is adopted the following technical scheme that:
The present invention discloses a kind of Straddle type monorail support rail system first, including:Roadbed body, it is layed on roadbed body
Bottom layer of subgrade, the bedding top layer being layed on bottom layer of subgrade, the pile that is embedded in roadbed body and bottom layer of subgrade and set
It is placed on the bent cap on pile top, the bent cap and track girder is installed.
Preferably, foregoing pile is steel-pipe pile, and the bent cap is made up of shaped steel.
It is highly preferred that foregoing pile is concrete-pile, the bent cap is made up of armored concrete.
More preferably, the section of foregoing roadbed body, bottom layer of subgrade and bedding top layer is trapezoidal.
In addition, the invention also discloses a kind of foregoing construction method of Straddle type monorail support rail system, for stake
Post is steel-pipe pile, and bent cap is the support rail system of shaped steel, is comprised the following steps:
S1, roadbed body are filled:Carry out construction survey, setting-out and build to carry out cross section at sidewalk, basic body of first satisfying the need
Overall with, it is longitudinal layered fill, complete one layer and unload after soil, coordinated with bull-dozer land leveller to fill out paving pave it is smooth, then
Carry out watering and dry work, then be compacted with vibrated roller, be finally to carry out road surface, side slope re-shaping exercise;
S2, bottom layer of subgrade construction:Construction method is identical with the construction method that roadbed body is filled;
S3, pile construction:Directly steel-pipe pile is squeezed into roadbed body surface, and pile top is fixedly connected with bent cap,
The bent cap is that two shaped steel are connected and composed by Interal fixation;
S4, the construction of bedding top layer:Construction method is identical with the construction method that roadbed body is filled;
S5, the progress attachment rail beam on bent cap, the track girder are steel box-girder form.
And be concrete-pile for pile, bent cap is the support rail system of armored concrete, is comprised the following steps:
S1, roadbed body are filled:Carry out construction survey, setting-out and build to carry out cross section at sidewalk, basic body of first satisfying the need
Overall with, it is longitudinal layered fill, complete one layer and unload after soil, coordinated with bull-dozer land leveller to fill out paving pave it is smooth, then
Carry out watering and dry work, then be compacted with vibrated roller, be finally to carry out road surface, side slope re-shaping exercise;
S2, bottom layer of subgrade construction:Construction method is identical with the construction method that roadbed body is filled;
S3, pile construction:Pile is concrete-pile, squeezes into steel pile casting, drilling, descending reinforcing cage, pours a diameter of 1.0m's
Concrete-pile rod structure, it is reserved connect a batch reinforcing bar, in pile top cast-in-situ steel reinforced concrete bent cap;
S4, the construction of bedding top layer:Construction method is identical with the construction method that roadbed body is filled;
S5, the progress attachment rail beam on bent cap, the track girder are steel box-girder form.
The present invention is advantageous in that:The Straddle type monorail support rail system of the present invention is mutually tied using roadbed body with pile
The support rail system of conjunction, takes full advantage of the supporting role of roadbed body between pile, can improve the stress effect of road structure, phase
Than existing overhead system track girder, while single-line railway beam span is improved, overhead track girder, overhead knot are effectively reduced
Structure bridge pier and basic material consumption, both improve structure stress, and investment is saved again, with significant social benefit and economic effect
Benefit.
Brief description of the drawings
Fig. 1 is a kind of structural representation of Straddle type monorail support rail system of the present invention.
The implication of reference in figure:1st, roadbed body, 2, bottom layer of subgrade, 3, pile, 4, bent cap, 5, bedding top layer, 6,
Track girder.
Embodiment
Make specific introduce to the present invention below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, Straddle type monorail support rail system of the invention includes:Roadbed body 1, it is layed on roadbed body 1
Bottom layer of subgrade 2, the bedding top layer 5 being layed on bottom layer of subgrade 2, the pile 3 being embedded in roadbed body 1 and bottom layer of subgrade 2 with
And the bent cap 4 on the top of pile 3 is arranged at, the section of roadbed body 1, bottom layer of subgrade 2 and bedding top layer 5 is trapezoidal, in bent cap 4
On track girder 6 is installed.In practice of construction, pile 3 is steel-pipe pile or concrete-pile, and bent cap 4 is accordingly by shaped steel or reinforcing bar
Concrete is made.
In order to preferably implement the present invention, the construction method of the Straddle type monorail support rail system is also disclosed, is specifically included
Following steps:
S1, roadbed body 1 are filled:Carry out progress at construction survey, setting-out and build sidewalk, basic body of first satisfying the need 1 cross-section
Face overall with, it is longitudinal layered fill, complete one layer and unload after soil, coordinated with bull-dozer land leveller to fill out paving pave it is smooth, so
Watering is carried out afterwards and dries work, then is compacted with vibrated roller, is finally to carry out road surface, side slope re-shaping exercise;Work above
Inspected for acceptance into rear by standard inspection, it is substandard to do up on request until qualified.
S2, bottom layer of subgrade 2 are constructed:Construction method is identical with the construction method that roadbed body 1 is filled, and is a difference in that bedding
Degree of compaction standard is higher;
S3, pile 3 are constructed:Two schemes construction can be divided into,(1), directly squeeze into steel-pipe pile on the surface of roadbed body 1, and
The top of pile 3 is set to be fixedly connected with bent cap 4, bent cap 4 is that two shaped steel are connected and composed by Interal fixation;(2), pile 3 be
Concrete-pile, squeezes into steel pile casting, drilling, descending reinforcing cage, the structure of concrete pile 3 for pouring a diameter of 1.0m, reserved connects a batch steel
Muscle, in the top cast-in-situ steel reinforced concrete bent cap 4 of pile 3;
S4, bedding top layer 5 are constructed:Construction method is identical with the construction method that roadbed body 1 is filled;
S5, the progress attachment rail beam 6 on bent cap 4, the track girder 6 is steel box-girder form.
To sum up, Straddle type monorail support rail system of the invention uses the support rail system that roadbed body 1 is combined with pile 3,
The supporting role of 3 roadbed bodies 1 of pile is taken full advantage of, the stress effect of road structure can be improved, compared to existing height
Posture track girder 6, while single-line railway 6 span of beam is improved, effectively reduces overhead track girder 6, elevated structure bridge pier
And basic material consumption, structure stress is both improved, investment is saved again, with significant Social benefit and economic benefit.
The basic principles, principal features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the invention is not limited in any way for above-described embodiment, it is all to be obtained by the way of equivalent substitution or equivalent transformation
Technical scheme, all falls within protection scope of the present invention.