CN108842531A - A kind of cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel top and its construction method - Google Patents
A kind of cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel top and its construction method Download PDFInfo
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- CN108842531A CN108842531A CN201810428570.9A CN201810428570A CN108842531A CN 108842531 A CN108842531 A CN 108842531A CN 201810428570 A CN201810428570 A CN 201810428570A CN 108842531 A CN108842531 A CN 108842531A
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- Prior art keywords
- track wall
- cast
- track
- straddle
- precast section
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/08—Tracks for mono-rails with centre of gravity of vehicle above the load-bearing rail
- E01B25/10—Mono-rails; Auxiliary balancing rails; Supports or connections for rails
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Railway Tracks (AREA)
Abstract
The invention discloses a kind of cast-in-place track wall constructions in the prefabricated lower part in straddle-type monorail tunnel top, including track wall top precast section and track wall lower part Cast-in-Situ Segment；Track wall top precast section is that segmentation is prefabricated, and bottom surface is reserved with connection reinforcing bar, and the connection reinforcing bar and track wall lower part Cast-in-Situ Segment form armored concrete overall structure.Also disclose the construction method based on the cast-in-place track wall construction in the prefabricated lower part in above-mentioned straddle-type monorail tunnel top.The present invention disperses train load and dead load load, avoids all Load concentrations from acting on branch pier foundation, to reduce tunnel cross-section by using the scheme of track wall under the premise of meeting the track accuracy of manufacture.
Description
Technical field
The present invention relates to geotechnical engineering fields, and in particular to a kind of cast-in-place track in the prefabricated lower part in straddle-type monorail tunnel top
Wall construction and its construction method.
Background technique
Straddle-type monorail system is that vehicle straddles a kind of novel rail mode run on track girder, main special
Point is that investment cost is low, the construction period is short, adaptable, environment influence is small, is suitable for the vast medium-sized city in China.Straddle seat
Although formula single track is based on overhead bridge structure, in downtown urban land, especially urban district prosperity location, by ground space
Restriction, straddle-type monorail will be partially into underground.After straddle-type monorail enters underground, in order to guarantee the accuracy of manufacture of track,
The structure type of buttress and pre-track beam is used in tunnel at present, this structure type makes train load and track girder itself
Load concentration acts on buttress, causes buttress key dimension big, thus it requires the cross dimensions in tunnel is larger, improves engineering
Cost reduces the economy of straddle-type monorail.
Summary of the invention
For the above-mentioned technical problems in the prior art, the present invention provides a kind of straddle-type monorail tunnel top is pre-
The cast-in-place track wall construction in lower part processed and its construction method, by using the scheme of track wall, before meeting the track accuracy of manufacture
It puts, disperses train load and dead load load, all Load concentrations is avoided to act on branch pier foundation, so that it is disconnected to reduce tunnel
Face.
In order to achieve the above objectives, the technical solution adopted by the present invention is：A kind of prefabricated lower part in straddle-type monorail tunnel top
Cast-in-place track wall construction, including track wall top precast section and track wall lower part Cast-in-Situ Segment；Track wall top precast section is
It is segmented prefabricated, bottom surface is reserved with connection reinforcing bar, and it is whole that the connection reinforcing bar and track wall lower part Cast-in-Situ Segment form armored concrete
Structure.
Further, it is equipped with a boss every 5~20m on track wall lower part Cast-in-Situ Segment inner tunnel inverted arch, it is described
Track wall top precast section is installed on boss.
Further, it is provided with steel height adjusting cushion block between the boss and track wall top precast section, to guarantee track wall
Installation accuracy.
Further, the steel height adjusting cushion block is with a thickness of 1~20cm.
Further, deformation joint, deformation is arranged in track wall top precast section and track wall top precast section junction
Seam arranged on left and right sides and top all use finger plate to connect.
Further, track wall top precast section is prefabricated using Reactive Powder Concrete or armored concrete, track
Wall top precast section underrun dabbing is equipped with dent.
Further, the prefabricated segment length in track wall top is determined according to Linear Control and execution conditions, generally 1~
20m。
The present invention also provides a kind of based on the cast-in-place track wall construction in the prefabricated lower part in above-mentioned straddle-type monorail tunnel top
Construction method includes the following steps：
S1, pre-track wall top precast section, every segment length root are segmented using Reactive Powder Concrete or armored concrete
It is determined according to Linear Control and execution conditions, generally 1~20m, the reserved connection reinforcing bar in track wall top precast section bottom surface；
S2, one boss longitudinally is set every 5~20m on tunnel inverted arch, after boss reaches design compression strength, peace
Track wall top precast section is filled, in installation process, in order to guarantee the requirement of track wall installation accuracy, installation can be set above boss
With a thickness of the steel height adjusting cushion block of 1~20cm, the deformation joint of one fixed width, deformation are reserved between track wall top precast section and section
Seam arranged on left and right sides and top are all fixedly connected using finger plate；
After S3, the installation of track wall top precast section are in place, cast-in-place track wall lower part Cast-in-Situ Segment before cast-in-place construction, copes with rail
The top Dao Qiang precast section bottom surface carries out dabbing, and cleans up, and connect it closely with Cast-in-Situ Segment, track wall lower part Cast-in-Situ Segment with
The reserved connection reinforcing bar of track wall top precast section forms armored concrete integrated member.
Compared with prior art, the invention has the advantages that：
(1) stress of track wall construction is more reasonable.The track girder scheme used in current tunnel, track girder two sides buttress base
Plinth assumes responsibility for whole train load and dead load, and track wall of the present invention avoids train lotus using strip footing
It carries and track girder Load concentration acts on buttress.
(2) reduce the quantity of reinforcement of track wall.When using track girder scheme, moment of flexure is larger in the middle part of track girder, quantity of reinforcement compared with
Greatly, track wall force dispersion, stress is based on compression, moment of flexure very little, therefore arrangement of reinforcement can be greatly reduced.
(3) cross dimensions in tunnel is reduced.It when using track beam structure, is influenced by Load concentration, track girder two sides
Buttress and its branch pier foundation it is larger, cause tunnel cross-section to increase, and use track wall scheme after, do not need setting buttress, because
This tunnel cross-section is smaller.
Detailed description of the invention
Fig. 1 is the cast-in-place track wall construction in the prefabricated lower part in a kind of straddle-type monorail tunnel top involved in the embodiment of the present invention
Schematic diagram；
Fig. 2 is the attachment structure schematic diagram between track wall top precast section involved in the embodiment of the present invention.
In figure：10, track wall top precast section；11, reinforcing bar is connected；12, deformation joint；13, finger plate；20, under track wall
Portion's Cast-in-Situ Segment；21, boss；22, steel height adjusting cushion block；30, tunnel inverted arch.
Specific embodiment
In the following, specific embodiments of the present invention are described in detail in conjunction with attached drawing, but not as the limitation of the invention.
Embodiment 1
Referring to Fig.1-2, the cast-in-place track wall construction in the prefabricated lower part in a kind of straddle-type monorail tunnel top, including track wall top
Precast section 10 and track wall lower part Cast-in-Situ Segment 20；Track wall top precast section 10 uses Reactive Powder Concrete or armored concrete
It is segmented prefabricated, every segment length is determined according to Linear Control and execution conditions, generally 1~20m, and its bottom surface is reserved with connection steel
Muscle 11, for forming armored concrete overall structure with track wall lower part Cast-in-Situ Segment 20.Precast section 10 bottom surface in track wall top is logical
Dabbing is crossed equipped with dent, connect it closely with track wall lower part Cast-in-Situ Segment.
It is equipped with a boss 21 every 5~20m on 20 inner tunnel inverted arch 30 of track wall lower part Cast-in-Situ Segment, in cast-in-place rail
Attachment rail wall top precast section 10 before the lower part Dao Qiang Cast-in-Situ Segment 20, in installation process, in order to guarantee track wall top precast section
10 installation accuracy requirement, can be arranged installation above boss 21 with a thickness of the steel height adjusting cushion block 22 of 1~20cm.
Track wall top precast section 10 is prefabricated using being segmented in the longitudinal direction, track wall top precast section 10 and track wall top
Deformation joint 12 is arranged in 10 junction of precast section, and 12 arranged on left and right sides of deformation joint and top all use finger plate 13 to connect.
Embodiment 2
The present embodiment provides one kind to be based on the cast-in-place track wall in the prefabricated lower part in straddle-type monorail tunnel described in embodiment 1 top
The construction method of structure, includes the following steps：
S1, pre-track wall top precast section, every segment length root are segmented using Reactive Powder Concrete or armored concrete
It is determined according to Linear Control and execution conditions, generally 1~20m, the reserved connection reinforcing bar in track wall top precast section bottom surface；
S2, one boss longitudinally is set every 5~20m on tunnel inverted arch, after boss reaches design compression strength, peace
Track wall top precast section is filled, in installation process, in order to guarantee the requirement of track wall installation accuracy, installation can be set above boss
With a thickness of the steel height adjusting cushion block of 1~20cm, the deformation joint of one fixed width, deformation are reserved between track wall top precast section and section
Seam arranged on left and right sides and top are all fixedly connected using finger plate；
After S3, the installation of track wall top precast section are in place, cast-in-place track wall lower part Cast-in-Situ Segment before cast-in-place construction, copes with rail
The top Dao Qiang precast section bottom surface carries out dabbing, and cleans up, and connect it closely with Cast-in-Situ Segment, track wall lower part Cast-in-Situ Segment with
The reserved connection reinforcing bar of track wall top precast section forms armored concrete integrated member.
Above embodiments are only exemplary embodiment of the present invention, are not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can within the spirit and scope of the present invention make respectively the present invention
Kind modification or equivalent replacement, this modification or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (8)
1. a kind of cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel top, which is characterized in that including track wall top
Precast section (10) and track wall lower part Cast-in-Situ Segment (20)；Track wall top precast section (10) is that segmentation is prefabricated, and bottom surface is reserved
Have connection reinforcing bar (11), the connection reinforcing bar (11) and track wall lower part Cast-in-Situ Segment (20) form armored concrete overall structure.
2. a kind of cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel top according to claim 1, feature
It is, is equipped with a boss (21) every 5~20m on track wall lower part Cast-in-Situ Segment (20) inner tunnel inverted arch (30), it is described
Track wall top precast section (10) is installed on boss (21).
3. a kind of cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel top according to claim 2, feature
It is, is provided with steel height adjusting cushion block (22) between the boss (21) and track wall top precast section (10).
4. a kind of cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel top according to claim 3, feature
It is, the steel height adjusting cushion block (22) is with a thickness of 1~20cm.
5. a kind of cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel top according to claim 1, feature
It is, track wall top precast section (10) and track wall top precast section (10) junction setting deformation joint (12), deformation
Seam (12) arranged on left and right sides and top all use finger plate (13) to connect.
6. a kind of cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel top according to claim 1, feature
It is, track wall top precast section (10) is prefabricated using Reactive Powder Concrete or armored concrete, and track wall top is pre-
Section (10) underrun dabbing processed is equipped with dent.
7. a kind of cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel top according to claim 1, feature
It is, track wall top precast section (10) length is determined according to Linear Control and execution conditions, generally 1~20m.
8. a kind of based on the cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel as claimed in claim 1 to 7 top
Construction method, which is characterized in that include the following steps：
S1, pre-track wall top precast section is segmented using Reactive Powder Concrete or armored concrete, every segment length is according to line
Property control and execution conditions determine, generally 1~20m, the reserved connection reinforcing bar in track wall top precast section bottom surface；
S2, one boss longitudinally is set every 5~20m on tunnel inverted arch, after boss reaches design compression strength, mounting rail
The top Dao Qiang precast section in installation process, in order to guarantee the requirement of track wall installation accuracy, can be arranged above boss and install thickness
For the steel height adjusting cushion block of 1~20cm, the deformation joint of one fixed width, deformation joint are reserved between track wall top precast section and section
Arranged on left and right sides and top are all fixedly connected using finger plate；
After S3, the installation of track wall top precast section are in place, cast-in-place track wall lower part Cast-in-Situ Segment before cast-in-place construction, copes with track wall
Top precast section bottom surface carries out dabbing, and cleans up, and connect it closely with Cast-in-Situ Segment, track wall lower part Cast-in-Situ Segment and track
Precast section reserved connection reinforcing bar in wall top forms armored concrete integrated member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810428570.9A CN108842531A (en) | 2018-05-07 | 2018-05-07 | A kind of cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel top and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810428570.9A CN108842531A (en) | 2018-05-07 | 2018-05-07 | A kind of cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel top and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108842531A true CN108842531A (en) | 2018-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810428570.9A Pending CN108842531A (en) | 2018-05-07 | 2018-05-07 | A kind of cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel top and its construction method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202705822U (en) * | 2012-07-20 | 2013-01-30 | 重庆川东船舶重工有限责任公司 | Flexible turnout beam joint X-shaped plate assembly of straddle type single-track traffic track |
| WO2015011641A1 (en) * | 2013-07-24 | 2015-01-29 | Doyle Phillip Paul | Semi rigid precast wall system |
| CN104988951A (en) * | 2015-07-08 | 2015-10-21 | 中铁工程设计咨询集团有限公司 | Straddle type monorail underground section rail wall structure and construction method thereof |
| CN205443946U (en) * | 2015-12-30 | 2016-08-10 | 上海浦东建筑设计研究院有限公司 | Connected system of bridge prefabrication roof beam and pier |
| CN208701426U (en) * | 2018-05-07 | 2019-04-05 | 中铁工程设计咨询集团有限公司 | A kind of cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel top |
-
2018
- 2018-05-07 CN CN201810428570.9A patent/CN108842531A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202705822U (en) * | 2012-07-20 | 2013-01-30 | 重庆川东船舶重工有限责任公司 | Flexible turnout beam joint X-shaped plate assembly of straddle type single-track traffic track |
| WO2015011641A1 (en) * | 2013-07-24 | 2015-01-29 | Doyle Phillip Paul | Semi rigid precast wall system |
| CN104988951A (en) * | 2015-07-08 | 2015-10-21 | 中铁工程设计咨询集团有限公司 | Straddle type monorail underground section rail wall structure and construction method thereof |
| CN205443946U (en) * | 2015-12-30 | 2016-08-10 | 上海浦东建筑设计研究院有限公司 | Connected system of bridge prefabrication roof beam and pier |
| CN208701426U (en) * | 2018-05-07 | 2019-04-05 | 中铁工程设计咨询集团有限公司 | A kind of cast-in-place track wall construction in the prefabricated lower part in straddle-type monorail tunnel top |
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