CN110258303A - The design method of Straddle type monorail bridge and its T pier with big line spacing T pier - Google Patents
The design method of Straddle type monorail bridge and its T pier with big line spacing T pier Download PDFInfo
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- CN110258303A CN110258303A CN201910482692.0A CN201910482692A CN110258303A CN 110258303 A CN110258303 A CN 110258303A CN 201910482692 A CN201910482692 A CN 201910482692A CN 110258303 A CN110258303 A CN 110258303A
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- 238000013461 design Methods 0.000 title claims abstract description 39
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Classifications
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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
- E01D19/00—Structural or constructional details of bridges
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
Abstract
The invention discloses a kind of Straddle type monorail bridges with big line spacing T pier, including track girder, it further include several big line spacing T piers below the track girder, the big line spacing T pier includes pier stud (2), bent cap and pinner (5), and the bent cap includes the variation section lid beam (4) that its both ends is divided into standard paragraphs bent cap (3) and transverse direction；Structure, the size of standard paragraphs bent cap (3) described in each big line spacing T pier are identical；The end height of variation section lid beam (4) is identical as the end height of the standard paragraphs bent cap (3), and for the different big line spacing T piers, the lateral length of variation section lid beam (4) is same or different.The invention also discloses a kind of design methods of big line spacing T pier for Straddle type monorail bridge.The present invention only need to reduce the workload of design and drawing according to line spacing size design variation section lid beam length, while be conducive to improve the recycling rate of waterused of template.
Description
Technical field
The invention belongs to rail traffic bridge technical field of structures, more particularly, to riding on big line spacing T pier
The design method of formula single track bridge and its T pier.
Background technique
Cross-saddle single-track traffic is one kind of urban track traffic, and since straddle-type monorail has, landscape is good, low cost, makes an uproar
The plurality of advantages such as sound is low, the construction period of cross-saddle single-track traffic is often not as good as the half in subway construction period, cost
The only one third or so of subway, but belong to the Rail Transit System of medium-heavy road traffic, it can largely improve city
Traffic problems.Three, four line cities of the country are very high to the enthusiasm of cross-saddle single-track traffic at present, and multiple cities are all being planned and built
Monorail transit has biggish market potential.
The design of the bridge pier of Straddle type monorail will not only meet the structure type of PC track girder and the stress function of structure, also
Restriction by objective factors such as greenbelt width, route ambient enviroments.Respectively have one before and after the island station of Straddle type monorail
Section route line spacing gradually changes to more than ten meters from normal line spacing.Traditional big line spacing pier of rail traffic bridge can be set
Two single line bridge piers are set, but Straddle type monorail bridge pier is generally positioned at road center, does not have the condition of vertical two single lines bridge pier, because
This can only be designed as two-wire Single column pier.
Straddle type monorail single line usually has dozens or even hundreds of big line spacing T pier in the prior art, at present across
Sitting posture single track only has 2, No. 3 lines of Chongqing Light Rail, and big line spacing T pier is individually set using for every kind of line spacing
Meter, as shown in Figure 1, there are various problems:
1, when the only column of setting chooses greatly arm T pier, since the line spacing of each pier is different, lead to the bent cap size of each pier
All different, Straddle type monorail route usually has dozens or even hundreds of big line spacing bridge pier, and bent cap length and height are according to each
The corresponding line spacing of bridge pier is designed, and increases the workload of design drawing in the design；
2, when big line spacing T pier is more, the drafting workload of T pier reinforcement drawing is increased, it is big to reduce Straddle type monorail
The design efficiency of line spacing T pier；
3, since the bent cap size of each pier is different, in requisition for various sizes of template, mould is increased in construction
The usage amount of plate increases the cost of manufacture of template.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of for the big of Straddle type monorail bridge
Bent cap is divided into standard paragraphs bent cap and variation section lid beam by line spacing T pier, and wherein standard paragraphs bent cap structure, size are fixed, it is only necessary to
According to the size design variation section lid beam length of line spacing, reduce the workload of design and drawing.
To achieve the above object, according to one aspect of the present invention, a kind of sit-astride list with big line spacing T pier is provided
Rail bridge, including track girder further include several big line spacing T piers below the track girder, wherein
The big line spacing T pier include pier stud, the bent cap at the top of the pier stud and be set to the bent cap at the top of two sides
Pinner, and the bent cap includes the variation section lid that the standard paragraphs bent cap both ends are divided into standard paragraphs bent cap and transverse direction
Beam；
The standard paragraphs bent cap is fixedly installed at the top of the pier stud, and the two forms integral structure, and between each big line
Structure, size away from standard paragraphs bent cap described in T pier are identical；
The variation section lid beam is connected with the end of the corresponding standard paragraphs bent cap respectively, and the variation section lid beam
End height is identical as the end height of the standard paragraphs bent cap, and for the different big line spacing T piers, the change
The lateral length for changing section lid beam is same or different.
Further, the thickness of the standard paragraphs bent cap successively thickeies from both ends to the middle, and standard paragraphs bent cap bottom
Portion and pier stud pier shaft two sides junction use circular arc drop-over.
Further, the pier stud, standard paragraphs bent cap, the longitudinal width of variation section lid beam are identical.
Further, one of rectangular longitudinal groove is equipped at the pier shaft of the pier stud, which is located at bridge pier center
At line, vertical height is consistent with the pier stud, and top is located at the bottom of the bent cap.
Further, the bent cap top planes are rectangle, and rectangular four angles were carried out by small arc-shaped
It crosses.
It is another aspect of this invention to provide that providing a kind of design side of big line spacing T pier for Straddle type monorail bridge
Method includes the following steps:
S1: the height of pier stud is determined；
S2: setting standard paragraphs bent cap (3) for the bent cap of the big line spacing T pier and is located at the standard paragraphs in transverse direction
Variation section lid beam (4) two parts of bent cap (3) both side ends；First determine big line spacing T pier Plays section lid beam (3) structure,
Size, the transverse direction with the slope of pier stud (2) junction circular arc, the standard paragraphs bent cap (3) including the standard paragraphs bent cap (3)
The arrangement of reinforcing bar in length and bent cap；
S3: according to the required distance and route of the pinner width, pinner and bridge pier edge of two sides at the top of line spacing, bent cap
Offset distance determines the lateral length for changing section lid beam in the big line spacing T pier.
Further, in step S2, the lateral length of the standard paragraphs bent cap is fixed value, and the standard paragraphs bent cap
Lateral length is determined according to line spacing, the production requirement of template and force request.
Further, in step S2, the slope of the circular arc is fixed value, and the slope is according to bent cap height and the standard
Section lid beam length determines.
Further, in step S2, in each big line spacing T pier, the steel bar arrangement of the standard paragraphs bent cap is identical, institute
The steel bar arrangement of variation section lid beam is stated by determining according to its length parameter A.
Further, the template of the standard paragraphs bent cap uses same set of, and the template of the variation section lid beam is set as prefabricated
Standard segment unit.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect:
(1) the Straddle type monorail bridge with big line spacing T pier of the invention, the bent cap of T pier are divided into standard paragraphs and variation
Section, the length and slope of standard paragraphs bent cap are fixed value, and the variation section far from pier stud is the fixed straight section of height, the length of straight section
Degree is determined according to line spacing, can be indicated in the design with parameter, the standard paragraphs of each T pier are identical, it is only necessary to according to line spacing
Size design variation section lid beam length, reduce the workload of design and drawing.
(2) the Straddle type monorail bridge with big line spacing T pier of the invention passes through arc transition between bent cap and pier stud,
Pier shaft a front surface and a side surface has the cutting of different proportion simultaneously, increases the three-dimensional sense of pier shaft, seems pier stud from any angle
It is all more lively.
(3) the Straddle type monorail bridge with big line spacing T pier of the invention also meets bridge while optimizing structure
Whole landscape and the unified principle of environment.
(4) design method of the big line spacing T pier for Straddle type monorail bridge of the invention, bent cap change the reinforcing bar of section
It is arranged through parameter expression, the reinforcement drawing of all bridge piers can be indicated by a figure, when big line spacing T pier is more,
The drafting workload for reducing T pier reinforcement drawing improves the design efficiency of the big line spacing T pier of Straddle type monorail.
(5) design method of the big line spacing T pier for Straddle type monorail bridge of the invention, the template of standard paragraphs bent cap
It can be reused using same set of, and the template for changing section lid beam is also designed to prefabricated standard segment unit,
Construction site carries out assembly, advantageously reduces the cost of manufacture of template, improves the recycling rate of waterused of template.
Detailed description of the invention
Fig. 1 chooses greatly arm T pier structure schematic diagram for traditional；
Fig. 2 be the present embodiments relate to big line spacing T pier structure schematic diagram；
Fig. 3 be the present embodiments relate to big line spacing T pier side view；
Fig. 4 be the present embodiments relate to big line spacing T pier top view；
Fig. 5 be the present embodiments relate to 1/2 bent cap reinforcing bar schematic diagram of big line spacing T pier.
In all the appended drawings, same appended drawing reference indicates identical technical characteristic, specifically: 1- tradition chooses arm T pier greatly,
101- pier, 102- bent cap, 103- pinner；2- pier stud, 3- standard paragraphs bent cap, 4- change section lid beam, 5- pinner.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below that
Not constituting conflict between this can be combined with each other.
Fig. 1 be domestic rail traffic bridge it is traditional choose arm T pier structure schematic diagram greatly, it includes pier that tradition, which chooses greatly arm T pier 1,
101, bent cap 102 and pinner 103, bent cap 102 be set to pier 101 over top, the thickness of bent cap 102 from end to root by
Gradually increase, and with 101 junction of pier, the thickness of bent cap 102 is maximum.Traditional chooses greatly arm T pier, and the length of bent cap 102 needs
Determine which is when the big line spacing T pier in route is more, according to track according to the two-wire spacing of 102 both lateral sides of bent cap
When the actual conditions and special road conditions of traffic driving, often interval can encounter the different situation of line spacing, the length of bent cap 102
Degree, thickness and corresponding other parameters need to be determined according to each line distance computation, on the one hand increase design in the design
On the other hand Plot Work amount increases the usage amount of template in construction, bring more inconvenience, reduces working efficiency.
To solve deficiency existing for big line spacing T pier in the prior art, the present invention provides one kind to be used for Straddle type monorail
The big line spacing T pier of bridge, Fig. 2 be the present embodiments relate to big line spacing T pier structure schematic diagram, as shown in Fig. 2, having
The Straddle type monorail bridge of big line spacing T pier, several big line spacing T piers including track girder and below the track girder,
Wherein, big line spacing T pier, including pier stud 2, standard paragraphs bent cap 3, variation section lid beam 4 and pinner 5, the design of bent cap are by ginseng
Number variation, bent cap includes standard paragraphs bent cap 3 and is located at the variation section lid beam 4 of 3 both side ends of standard paragraphs bent cap in transverse direction,
Transverse direction, that is, cross-bridges beam direction；Standard paragraphs bent cap 3 and pier stud 2 form integral structure, the variation section lid beam 4 of two sides with respectively with
The end of corresponding standard paragraphs bent cap 3 is connected, and there is pinner 5 in the top of the variation section lid beam 4 of two sides.Of the invention has big line
The Straddle type monorail bridge of spacing T pier, big line spacing T pier overcome traditional big line spacing T pier and need according between each line
Disadvantage away from one pier cap beam size of design, greatly reduces the workload of design and drawing, the bridge pier of big line spacing is made to exist
It is more flexible in design.
The present invention also provides the design methods of the big line spacing T pier for Straddle type monorail bridge, include the following steps:
S1: the height of pier stud 2 is determined；
S2: setting standard paragraphs bent cap 3 for the bent cap of big line spacing T pier and is located at the standard paragraphs bent cap 3 in transverse direction
4 two parts of variation section lid beam of both side ends；First determine structure, the size of big line spacing T pier Plays section lid beam 3, including mark
The arrangement with reinforcing bar in the slope of 2 junction circular arc of pier stud, the lateral length and bent cap of standard paragraphs bent cap 3 of quasi- section lid beam 3；
S3: big line is determined according to the required distance at line spacing, pinner width, pinner 5 and bridge pier edge and route offset distance
Change the lateral length of section lid beam 4 in spacing T pier.
Specifically, the thickness of standard paragraphs bent cap 3 successively thickeies from both ends to the middle, the thickness of bent cap i.e. from bent cap bottom to
The vertical height at top；And 3 bottom of standard paragraphs bent cap and 2 pier shaft two sides junction of pier stud use circular arc drop-over, general circular arc
Radius is bigger, better to the stress of bent cap root, but the radius of circular arc is bigger, and the overall aesthetic degree of bridge pier can decline, especially
It is the T pier shorter for pier height, circular arc is too big to seem that whole bridge pier is very thick and heavy, therefore circular arc is preferably 1 meter of radius.And the circle
The slope of arc is fixed value, i.e., the corner dimension formed between 3 bottom of standard paragraphs bent cap and pier stud 2 is fixed, standard paragraphs bent cap 3
Slope is determined according to bent cap height and 3 length of standard paragraphs bent cap.
Meanwhile the lateral length (length of direction across bridge) of both ends standard paragraphs bent cap 3 is also fixed, and between the same big line
Length away from the standard paragraphs bent cap 3 of both lateral sides in T pier is preferably identical.The lateral length of standard paragraphs bent cap 3 need to consider with
Under several aspects: be line spacing first, the length of standard paragraphs bent cap 3 should be more than or equal to what minimum line spacing bridge pier needed
Bent cap length needs to be designed to that the bridge pier minimum line spacing of T pier is 5.8 meters, bridge pier by taking a certain practical application of the invention as an example
It needs to place pinner 5 on bent cap, in addition the width of pinner 5 and pinner 5 are apart from pier side minimal distance requirement, bridge pier standard paragraphs bent cap
3 length are no less than 8 meters；The production requirement of its secondary consideration template, 3 length of standard paragraphs bent cap should be integer；Finally consider by
Force request, 3 length of standard paragraphs bent cap is shorter, and variation 4 length of section lid beam just needs to lengthen, and bridge pier biggish for line spacing comes
It says, the variation too long configuration to stress and prestressed cable of segment length is unfavorable, therefore is set as standard paragraphs bent cap 3 by tentative calculation
8~10 meters of length is relatively reasonable.
In addition, the height of the end cross-sectional of standard paragraphs bent cap 3 is identical as the variation height of end cross-sectional of section lid beam 4, because
Design of the height relationships of this standard paragraphs bent cap 3 to variation 4 height of section lid beam.Determining for the end height of standard paragraphs bent cap 3 needs
Meet the anchoring requirement of prestressed cable, in practical applications, finds that the arrangement of the prestressed cable of bridge pier at most needs by tentative calculation
Three row's steel beams are wanted, the anchored end of steel beam is set to the end of bent cap, since prestressed anchor has the requirement in tensioning space, steel beam
Between and steel beam and bent cap edge at a distance from need to meet defined minimum spacing in anchorage product sample volume.So standard paragraphs bent cap
3 end heights should meet the arrangement requirement of prestressed cable first, secondly should meet the force request of this engineering.
Further, 3 transverse ends of standard paragraphs bent cap respectively with variation section lid beam 4 be connected, change section lid beam 4 with a thickness of
Fixed value, it is identical as the height of end cross-sectional of 3 two sides of standard paragraphs bent cap, unlike 3 Design of length of standard paragraphs bent cap, become
Change the length of section lid beam 4 mainly according to the number such as required distance, the route offset distance at line spacing, pinner width, pinner 5 and bridge pier edge
Length according to determination, substantially variation section lid beam 4 is different for each bridge pier.
In addition, due to bridge pier be it is cast-in-place, change when section lid beam 4 and standard paragraphs bent cap 3 are construction bridge piers and directly pour
It builds together.But the template of standard paragraphs bent cap 3 and variation section lid beam 4 makes respectively, the template of standard paragraphs bent cap 3 can
It is same set of to use, it can reuse, it is preferable that it is single that the template of variation section lid beam 4 is also designed to prefabricated standard segment
Member carries out assembly at the construction field (site), advantageously reduces the cost of manufacture of template, improve the recycling rate of waterused of template, directly reduces
Engineering cost has society and economic benefit well.
Preferably, the position of pinner 5 is determined according to the position of route, between the outermost of both lateral sides pinner 5
Two sides transverse direction pinner as defined in distance and specification is identical to the sum of the distance at pier edge and the length of bent cap.
Preferably, as shown in Fig. 2, the pier shaft of pier stud 2 is transversely provided with cutting.There is wide 60cm in the transverse direction of bridge pier, deep 5cm's
Transverse notch, the Transverse notch lower part are straight line, and top is circular arc.The size of Transverse notch is laterally accounting for entire transverse width
1/3, longitudinal depth is 5cm, finds that the ratio of this size on bridge pier is most beautiful by research, at the same nor affect on pier shaft by
Power.Pier stud it is moulded from the coco stretched as one plant of tree crown is seen at a distance, when choosing arm T pier greatly and forming a line, with surrounding
Greening form mutual concord, have good promotion to whole landscape effect.
It is proposed is additionally needed, the height (height of pier top to bottom surface) of whole bridge pier is according to ground line absolute altitude and route
Absolute altitude, pier position mileage are determining, generally 0.5 multiple.Preferably, bent cap standard paragraphs root height is 2.5 meters, and end height is
It is 1.5 meters, main to be determined by tentative calculation.Since the PC track girder self weight of Straddle type monorail is lighter, act on dead load on bridge pier and
Mobile load has substantially achieved the ratio of 1:1, thus have vehicle and without two kinds of operating conditions of vehicle under counter-force variation width suffered by pier cap beam
Degree range be it is very big, the case where line taking spacing is maximum when determining bent cap height, bent cap length longest and line spacing are most
Small, bent cap is that two kinds of situations of standard segment length carry out tentative calculation, when line spacing maximum, bent cap length longest, if bent cap is high
Spend too small, the configuration of prestressed cable satisfaction has a turner condition, and when no vehicle, bent cap lower edge just will appear tensile stress；When line spacing most
Small, when bent cap length is standard segment length, height required for bent cap is just easier to meet the requirements, but if the height of bent cap
Degree is too big, will cause the waste of material first, next will affect the beauty of bridge pier.Therefore, the height of bent cap standard paragraphs is basis
The specific load situation of this engineering is determined according to tentative calculation, neither causes the waste of material, and be able to satisfy the requirement of stress.
Straddle type monorail bridge with big line spacing T pier of the invention, has carried out excellent on traditional big line spacing T pier
Change, the bent cap of T pier is divided into standard paragraphs and variation section, and the bent cap standard paragraphs close to pier stud are the change gradually thickeied from end to root
Slope, the length and slope of standard paragraphs bent cap are fixed value, and the variation section far from pier stud is the fixed straight section of height, the length of straight section
Degree is determined according to line spacing, can be indicated in the design with parameter, the standard paragraphs of each T pier are identical, it is only necessary to according to line spacing
Size design variation segment structure, reduce the workload of design and drawing.
Further, Fig. 3 be the present embodiments relate to big line spacing T pier side view, Fig. 4 be the present embodiments relate to
Big line spacing T pier top view.As shown in figure 3, pier stud 2, standard paragraphs bent cap 3, the longitudinal width of change section lid beam 4 are identical, bridge pier
Side bent cap and pier shaft form an entirety, and from the side, and rectangular longitudinal groove together is equipped at the pier shaft of pier stud 2,
The aesthetic beauty for being conducive to improve bridge pier entirety, increases three-dimensional sense.Preferably, the wide 6cm of longitudinal groove, deep 2cm, and with it is adjacent
Standard pier keeps unified, which is located at bridge pier centerline, and vertical height and pier stud 2 are consistent, and top is located at lid
The bottom of beam.As shown in figure 4, bent cap top planes are rectangle, and rectangular four angles carry out transition by small arc-shaped,
Keep T pier top facial planes softer, in addition, the bent cap of pier top is equipped with enough spaces to place the pad for being used to support track girder
Stone 5.
Further, Fig. 5 be the present embodiments relate to 1/2 bent cap reinforcing bar schematic diagram, as shown in figure 5, pier cap beam
Steel bar arrangement be divided into two parts, the steel bar arrangement of bent cap standard paragraphs is the same for all bridge piers, bent cap change section
Steel bar arrangement by bent cap change segment length A parameter indicate, longitudinal reinforcement N1 length according to the value of A change, lateral tie
The length of N2 is constant, and spacing is constant, and radical is indicated according to bent cap length with parameter A, and the reinforcement drawing of all bridge piers can lead to
A figure is crossed to indicate, when big line spacing T pier is more, the drafting workload of T pier reinforcement drawing is reduced, improves sit-astride list
The design efficiency of the big line spacing T pier of rail.
Big line spacing T pier of the invention be suitable for Straddle type monorail and the self weight of similar with Straddle type monorail PC track girder compared with
Gently, the lesser Bridges on Urban Rail Transit of load.Since the monolithic track girder that Straddle type monorail uses corresponds to the form of single vehicles,
Therefore there is biggish flexibility in city, drive a vehicle when two-wire and arrange the building for encountering bad evacuation in city, or occur not
The case where the case where must being not provided with island station, the arrangement of route just will appear the variation of line spacing, in this case, we can be with
Two column bridge piers are set, but in general city route be all it is parallel with surface road, bridge pier can only be arranged among greenbelt,
Therefore it needs to be arranged to choose arm T pier greatly, the present invention can save the design time of the big line spacing T pier of Straddle type monorail, greatly reduce
Design efforts would, it has very strong specific aim to Straddle type monorail, has good help to the development of subsequent Straddle type monorail.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of Straddle type monorail bridge with big line spacing T pier, including track girder, which is characterized in that further include being set to be somebody's turn to do
Several big line spacing T piers below track girder, wherein
The big line spacing T pier includes pier stud (2), the bent cap being set at the top of the pier stud (2) and is set to two at the top of the bent cap
The pinner (5) of side, and the bent cap includes that standard paragraphs bent cap (3) both ends are divided into standard paragraphs bent cap (3) and transverse direction
Variation section lid beam (4)；
The standard paragraphs bent cap (3) is fixedly installed at the top of the pier stud (2), and the two forms integral structure, and each big line
Structure, the size of standard paragraphs bent cap (3) described in spacing T pier are identical；
Variation section lid beam (4) is connected with the end of the corresponding standard paragraphs bent cap (3) respectively, and the variation section lid beam
(4) end height is identical as the end height of the standard paragraphs bent cap (3), and for the different big line spacing T piers,
The lateral length of its variation section lid beam (4) is same or different.
2. the Straddle type monorail bridge according to claim 1 with big line spacing T pier, which is characterized in that the standard
The thickness of section lid beam (3) successively thickeies from both ends to the middle, and standard paragraphs bent cap (3) bottom and the pier stud (2) pier shaft
Two sides junction uses circular arc drop-over.
3. the Straddle type monorail bridge according to claim 1 or 2 with big line spacing T pier, which is characterized in that the pier
Column (2), standard paragraphs bent cap (3), the longitudinal width of variation section lid beam (4) are identical.
4. the Straddle type monorail bridge according to claim 1-3 with big line spacing T pier, which is characterized in that
One of rectangular longitudinal groove is equipped at the pier shaft of the pier stud (2), which is located at bridge pier centerline, vertical height
Unanimously with the pier stud (2), and top is located at the bottom of the bent cap.
5. the Straddle type monorail bridge according to claim 1-4 with big line spacing T pier, which is characterized in that
The bent cap top planes are rectangle, and rectangular four angles carry out transition by small arc-shaped.
6. a kind of design method of the big line spacing T pier for Straddle type monorail bridge, which comprises the steps of:
S1: the height of pier stud (2) is determined；
S2: setting standard paragraphs bent cap (3) for the bent cap of the big line spacing T pier and is located at the standard paragraphs bent cap in transverse direction
(3) variation section lid beam (4) two parts of both side ends；First determine structure, the size of big line spacing T pier Plays section lid beam (3),
The lateral length with the slope of pier stud (2) junction circular arc, the standard paragraphs bent cap (3) including the standard paragraphs bent cap (3)
And in bent cap reinforcing bar arrangement；
S3: according to the required distance and route of the pinner width, pinner (5) and bridge pier edge of two sides at the top of line spacing, bent cap
Offset distance determines the lateral length for changing section lid beam (4) in the big line spacing T pier.
7. the design method of the big line spacing T pier according to claim 6 for Straddle type monorail bridge, feature exist
In in step S2, the lateral length of the standard paragraphs bent cap (3) is fixed value, and the lateral length of the standard paragraphs bent cap (3)
It is determined according to line spacing, the production requirement of template and force request.
8. the design method of the big line spacing T pier according to claim 6 for Straddle type monorail bridge, feature exist
In in step S2, the slope of the circular arc is fixed value, and the slope is according to bent cap height and the standard paragraphs bent cap (3) length
It determines.
9. the design method of the big line spacing T pier according to claim 6 for Straddle type monorail bridge, feature exist
In in step S2, in each big line spacing T pier, the steel bar arrangement of the standard paragraphs bent cap (3) is identical, the variation section lid
The steel bar arrangement of beam (4) according to its length parameter A by determining.
10. according to the design method of the described in any item big line spacing T piers for Straddle type monorail bridge of claim 6-9,
It is characterized in that, the template of the standard paragraphs bent cap (3), using same set of, the template of variation section lid beam (4) is set as prefabricated
Standard segment unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482692.0A CN110258303A (en) | 2019-06-04 | 2019-06-04 | The design method of Straddle type monorail bridge and its T pier with big line spacing T pier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482692.0A CN110258303A (en) | 2019-06-04 | 2019-06-04 | The design method of Straddle type monorail bridge and its T pier with big line spacing T pier |
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