CN108755446A - A kind of construction system and construction method of no buttress suspension pouring arch-type bridge - Google Patents
A kind of construction system and construction method of no buttress suspension pouring arch-type bridge Download PDFInfo
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- CN108755446A CN108755446A CN201810614337.XA CN201810614337A CN108755446A CN 108755446 A CN108755446 A CN 108755446A CN 201810614337 A CN201810614337 A CN 201810614337A CN 108755446 A CN108755446 A CN 108755446A
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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
- E01D21/10—Cantilevered erection
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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
- E01D4/00—Arch-type 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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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Abstract
The present invention provides provide a kind of construction system of no buttress suspension pouring arch-type bridge comprising bridge location area rock is equipped with and is suitable for the vertical shaft that anchorage cable anchoring provides operating space, and vertical shaft, which is equipped with, is suitable for the anchor cable hole path that anchor cable passes through；Anchor cable, one end are fixedly connected across anchor cable hole path with bridge location area rock, and the other end is fixedly connected with arch rib, and arch rib is integrally connected by skewback and bridge location area rock；Anchor system after prestressing force type, it includes the concrete pedestal being fixedly connected with bridge location area rock, concrete pedestal side connects prestress anchorage cable, prestress anchorage cable extends linearly into rock fixed, the other side connects Inclined cable-stayed or cable ring rope, Inclined cable-stayed or the cable ring rope other end are fixedly connected with arch rib.The technical solution makes full use of existing structure, reduces project cost.The present invention also provides a kind of construction methods without buttress suspension pouring arch-type bridge based on the construction system without buttress suspension pouring arch-type bridge.
Description
Technical field
The present invention relates to a kind of construction systems and construction method of no buttress suspension pouring arch-type bridge.
Background technology
With the fast development of highway in China building cause, the bridge construction as highway construction important component obtains
It flourishes.Especially development of the West Regions construction is thriving, and road need to cross over intermountain valley, river, river, be typically chosen at this time
It is crossed over using type of bridge, and the structure type of bridge is often suspension bridge, cable-stayed bridge, it is especially many with arch bridge.
The emphasis and difficult point of Arch Bridge Construction are that main arch ring is constructed.Most popular method in mountain area arch bridge main arch ring construction at present
Mainly have：Stiff skeleton method, erection with cableway, construction by swing, erection by protrusion, cast-in-place cantilever method etc., and many constructions
Method be unable to do without CABLEWAY ERECTION SYSTEM or erection, and core is rear anchor section in this two big system.
Currently, as permanent structure (such as suspension bridge) anchorage, mainly there are gravity anchor, tunnel-type anchorage and combined type anchor
Heavy stone used as an anchor.Either as the CABLEWAY ERECTION SYSTEM of temporary structure or the rear anchor of erection, the main function of anchorage is all to use
To carry and balance the huge pulling capacity of cable, it is ensured that the safety and stability of whole system.
Gravity anchor is to use one of most common anchorage form at present.Since gravity anchor is bulky, and hold
By huge horizontal loading, therefore it is required that ground has higher vertical bearing capacity and larger horizontal friction coefficient below.
For karst area, though the high distribution solution cavity of rock strength, and solution cavity is mostly cavity or filling clay, cannot meet anchorage
Requirement for bearing capacity.On the other hand, due to the presence of solution cavity, underground water is often very abundant, is brought to anchorage construction and durability
Large effect.
Compared with gravity anchor, bridge anchorage is cheap, for example permanent structure Analysis of Suspension Bridges ' Anchorage, is built in 2000 years
The Chongqing E Gongyan Yangtze Bridge, tunnel-type anchorage force of gravity formula anchorage save 15,000,000 yuan or so.Due to tunnel anchorage can with enclose
Rock one works carries the huge pulling force of main push-towing rope jointly, the extensive excavation to original place table is avoided, in terms of environmental protection
Advantage is that gravity anchor is irreplaceable.Although tunnel-type anchorage heavy force formula anchorage in terms of saving construction cost, environmental protection has
Clear advantage, but the practical engineering application of tunnel-type anchorage is seldom, it is cable due to large-span suspension bridge to trace it to its cause
Power is larger (single cable reaches tens thousand of tons), higher for the rock quality at bridge location anchorage, and since male cone body size is larger, opens
The difficulty for digging supporting is larger.But for the rear anchor system of temporary institution, need the Suo Li balanced with respect to permanent structure bridge after
Much smaller for anchor, the quantities and supporting difficulty excavated certainly are much smaller, therefore according to live actual landform, fully send out
The advantage of tunnel anchorage is waved, the design interim anchorage of tunnel type is entirely possible.
Construction prestressed cable technology has been widely used in science of bridge building, wherein using prestressed anchor Cable Structure as cable
The successful engineering experience of the anchorage of rope Lift-on/Lift-off System or erection proves that prestress anchorage cable Technology application is in large-scale lifting
The anchorage structures of facility are safe and reliable.However the technology is limited in practical application by topographic and geologic condition, anchorage position
Buried depth of bedrock should not use when deeper.Different base rock conditions, need scene anchor force experimental data, need special equipment into
The series of factors requirement such as row construction selects anchor chain-formed anchor to need specific research as the case may be.
Western mountainous areas complicated geology, common soft rock foundation, intensity is low, Lack of support, and in stress long term
Under, it is easy to happen creep, while soft rock foundation is low with the friction coefficient of concrete cement plane, especially meeting water will occur
Ruckbildung so that cement plane micro-structural system becomes loose, to reduce the cohesive force and internal friction angle of cement plane, in turn
Lead to the strength reduction of cement plane.In order to improve the stability against sliding of anchorage, certainly will need to increase anchorage scale, it is ensured that anchorage base
Plinth has enough skid resistances, but also increases project cost simultaneously.As the rear anchor system of temporary structure, if due to soft rock foundation
Many unfavorable geological conditions often take increasing buried depth, and the lower rock stratum of selective weathering degree is as supporting course, or is aided with
The measures such as stake, open caisson, ground continuous wall base have so inevitably enlarged quantities and material consumption, make cost substantially on
It rises.Therefore, traditional anchorage structures design can not meet reasonable, economic, safe temporary structure anchorage design theory.
So, it is possible to find gravity anchor, generally use concreting form the anchor body of large volume, by dead weight and ground
Frictional force between base is come the pulling capacity for the system of resisting, and earthwork evacuation amount is big, concrete construction amount is more, to ecological environment shadow
It rings greatly, and usually will appear unstable slopes or different earth formations in the construction process, so as to cause entire anchorage
There is probabilistic deformation, causes the phenomenon that anchorage is unstable, using often resulting in constructional difficulties in Bridges in Mountainous Areas construction,
And it is unfavorable for reducing project cost.
The stress of tunnel-type anchorage is similar to conventional support anchor rod, but its actual size and actual loading big will obtain
More, it is also more more complicated to influence the factor of its stability, and the also higher of the requirement to country rock.Possible destruction after tunnel anchorage stress
Pattern mainly has：Massif overall deformation unstable failure, country rock failure by shear, country rock and anchorage concrete cement plane failure by shear and
Anchor rope breakage skids off.Because the technical problem involved by tunnel-type anchorage is more, difficulty of construction is big, therefore hinders its extensive hair
Exhibition.
The combined type anchorage of gravity anchor (tunnel anchorage)+anchor cable, the durability of anchor cable are difficult to ensure.Rock mass and armored concrete
The drilling of plate combined type anchorage is more, and working procedure is complicated.
In conclusion the rear anchor system as current temporary structure, not only wastes a large amount of human and material resources and financial resources, more
Important is the constructions of above-mentioned form anchorage can bring disturbance to precipitous side slope, and faces tail rope angle simultaneously and should not adjust
It is whole so that tail rope be easy bending, Engineering Quality Control difficulty is big, the construction period is long, security risk is big, stress is indefinite and compared with
A series of complicated, problems of high cost.
Invention content
It is an object of the present invention to provide one kind making full use of existing structure, and a kind of no buttress for reducing project cost is outstanding
Pour the construction system of arch bridge.
The second purpose of the present invention is to provide a kind of based on the construction system without buttress suspension pouring arch-type bridge without buttress cantilever
The construction method of arch bridge.
In order to solve the above-mentioned technical problem, the technical solution that the present invention takes is：
A kind of construction system of no buttress suspension pouring arch-type bridge comprising：
Bridge location area rock is equipped with and is suitable for the vertical shaft that anchorage cable anchoring provides operating space, and the vertical shaft, which is equipped with, is suitable for anchor
The anchor cable hole path that rope passes through；
Anchor cable, one end are fixedly connected across the anchor cable hole path with bridge location area rock, and the other end is solid with arch rib
Fixed connection, the arch rib are integrally connected by skewback and bridge location area rock；
Anchor system after prestressing force type comprising the concrete pedestal being fixedly connected with bridge location area rock, the coagulation
Soil matrix seat side connects prestress anchorage cable, and the prestress anchorage cable extends linearly into rock fixed, other side connection oblique pull button
It hangs or cable ring rope, the Inclined cable-stayed or the cable ring rope other end is fixedly connected with arch rib.
Preferably, the construction system of above-mentioned a kind of no buttress suspension pouring arch-type bridge, wherein anchor system packet after the prestressing force type
The concrete pedestal is included, one lateral plates are fitted closely with bedrock surface, and the opposite other side is fixedly connected with several goosenecks
With steel longeron；
Prestress anchorage cable, one end is extended linearly across the concrete pedestal and the steel longeron anchor connection, another
Linear extend in rock is fixed；
Inclined cable-stayed or cable ring rope, one end, which is extended linearly, to be consolidated with the gooseneck anchor connection, the other end with arch rib
Fixed connection.
Preferably, the construction system of above-mentioned a kind of no buttress suspension pouring arch-type bridge, wherein the concrete pedestal is serrated,
Including the plate face, and protrude from the vertical concrete rib at several intervals that are mutually parallel of the plate face.
Preferably, the construction system of above-mentioned a kind of no buttress suspension pouring arch-type bridge, wherein several goosenecks are mutually parallel
Interval setting, is fixedly connected with the outermost vertical concrete rib respectively, and outermost described vertical through this is located at
To other described vertical concrete ribs between concrete rib.
Preferably, the construction system of above-mentioned a kind of no buttress suspension pouring arch-type bridge, wherein several steel longerons are located at
Above the gooseneck, the top surface for being fixedly connected on the vertical concrete rib is corresponded respectively.
Preferably, the construction system of above-mentioned a kind of no buttress suspension pouring arch-type bridge, wherein anchor system is set after the prestressing force type
It is placed in the lower section of the vertical shaft, respectively the corresponding different segment that the arch rib is connected by anchor cable.
A kind of construction method of no buttress suspension pouring arch-type bridge comprising following steps：
S1：It determines bridge location area rock integrality and intensity value, judges whether that anchor cable force can be met；
S2：Using manually digging hole or existing vertical shaft is utilized, operating space is provided for anchorage cable anchoring；
S3：According to design anchor cable angle, the anchor cable hole path passed through suitable for anchor cable of constructing out；
S4：Using anchor system after prestressing force type, its prestress anchorage cable is extended linearly into rock and is fixed, the other end passes through
Inclined cable-stayed or cable ring rope are fixedly connected with arch rib；
S5：By the anchor cable break-through being fixedly connected with arch rib to Shaft Location, and the anchor cable is corresponded in step S3
Anchor cable hole path is fixed on rock.
Preferably, the construction method of above-mentioned a kind of no buttress suspension pouring arch-type bridge, anchor system after prestressing force type in wherein step S4
System construction includes the following steps：
S4.1：Construction prestress anchorage cable, in the deep of rock, arrangement beats anchor cable hole, and it is fixedly mounted in anchor cable steel strand wires
In；
S4.2：Concrete pedestal of constructing is corrected original ground concordant before the plate face of the pedestal is contacted with bedrock surface
And it is excavated to bedrock surface, it is ensured that concrete pedestal plate face is fitted closely with bedrock surface；Either after being excavated to bedrock surface, shut
Template, use are cast-in-place；
S4.3：Gooseneck is installed, gooseneck is installed and connected in concrete pedestal；
S4.4：Steel longeron is installed, steel longeron is installed and connected in concrete pedestal；
S4.5：The free end of stretch-draw prestressing force anchor cable in step S1 is corresponded to and is connected and fixed with steel longeron；
S4.6：Inclined cable-stayed or cable ring rope are installed, by itself and the gooseneck anchor connection in step S4.3, the other end with
Arch rib is fixedly connected.
Preferably, the anchoring of the construction method of above-mentioned a kind of no buttress suspension pouring arch-type bridge, wherein step S5 stream lines both can be with
It is completed in vertical shaft, also directly p-type anchor can be used to anchor.
Compared with prior art, the technology of the present invention advantage is：The technical solution efficiently uses the strong landform item in bridge location area
Part, especially rock integrality are good, the high situation of intensity, are directly fixed with bridge location area rock across anchor cable hole path using anchor cable
Connection, the other end are fixedly connected with arch rib, and in combination with anchor system after use prestressing force type, anchor stress after prestress anchorage cable is made
Structure resists the anchor cable pulling force of arch rib by the frictional force between prestress anchorage cable and rock, simple in structure, and design is skilful
It is wonderful, it is rationally distributed, and also structure stress is clear, easy for construction.Existing structure is made full use of simultaneously, reduces project cost, greatly
Reduce construction volume greatly, saves construction period.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is structural schematic diagram of the embodiment of the present invention；
Fig. 2 is anchor system structural schematic diagram after prestressing force type in the embodiment of the present invention；
Fig. 3 is concrete pedestal structural schematic diagram in the embodiment of the present invention.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
The present invention is described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.
As shown in FIG. 1 to 3, a kind of construction system of no buttress suspension pouring arch-type bridge, including bridge location area rock 1, anchor cable 3, in advance
Anchor system 5 after stress type；Bridge location area rock 1, which is equipped with, is suitable for the vertical shaft 2 that the anchoring of anchor cable 3 provides operating space, and vertical shaft 2 is equipped with suitable
In the anchor cable hole path that anchor cable 3 passes through；3 one end of anchor cable is fixedly connected across anchor cable hole path with bridge location area rock 1, the other end with
Arch rib 4 is fixedly connected, and arch rib 4 is integrally connected by skewback 7 and bridge location area rock 1；Anchor system 5 includes and bridge location after prestressing force type
The concrete pedestal 50 that area's rock 1 is fixedly connected, 50 side of concrete pedestal connect prestress anchorage cable 53,53 line of prestress anchorage cable
Property extends in rock fixed, and the other side connects Inclined cable-stayed or cable ring rope 6, Inclined cable-stayed or 6 other end of cable ring rope with
Arch rib 4 is fixedly connected.
Specifically, as shown in Figures 2 and 3, anchor system 5 includes the concrete pedestal 50, one side plate after prestressing force type
Face 500 is fitted closely with bedrock surface, and the opposite other side is fixedly connected with several goosenecks 51 and steel longeron 52；Prestress anchorage cable
53 one end are extended linearly across concrete pedestal 50 and 52 anchor connection of steel longeron, and the other end extends linearly into rock fixed；
Inclined cable-stayed or 6 one end of cable ring rope, which are extended linearly, to be fixedly connected with 51 anchor connection of gooseneck, the other end with arch rib 4.
More specifically, concrete pedestal 50 is serrated, including plate face 500, and protrude from the several mutual of plate face 500
The vertical concrete rib 501 of parallel interval.
Several goosenecks 51, which are mutually parallel, is spaced setting, is fixedly connected respectively with outermost vertical concrete rib 501,
And through other vertical concrete ribs 501 between the outermost vertical concrete rib 501；Several steel longerons 52 are distinguished
Above gooseneck 51, the top surface for being fixedly connected on vertical concrete rib 501 is corresponded respectively.
As shown in Figure 1, anchor system 5 is set to the lower section of vertical shaft 2 after prestressing force type, corresponds to connect by anchor cable respectively and encircle
The different segment of rib 4.
A kind of construction method of no buttress suspension pouring arch-type bridge comprising following steps：
S1：It determines bridge location area rock integrality and intensity value, judges whether that anchor cable force can be met；
S2：Using manually digging hole or existing vertical shaft is utilized, operating space is provided for anchorage cable anchoring；
S3：According to design anchor cable angle, the anchor cable hole path passed through suitable for anchor cable of constructing out；
S4：Using anchor system after prestressing force type, its prestress anchorage cable is extended linearly into rock and is fixed, the other end passes through
Inclined cable-stayed or cable ring rope are fixedly connected with arch rib；
S5：By the anchor cable break-through being fixedly connected with arch rib to Shaft Location, and the anchor cable is corresponded in step S3
Anchor cable hole path is fixed on rock.
Preferably, the construction method of above-mentioned a kind of no buttress suspension pouring arch-type bridge, anchor system after prestressing force type in wherein step S4
System construction includes the following steps：
S4.1：Construction prestress anchorage cable, in the deep of rock, arrangement beats anchor cable hole, and it is fixedly mounted in anchor cable steel strand wires
In, specifically, drilling machine is arranged in rock surface, is gradually drilled by export-oriented rock depths, then steel strand, is finally filled
Slurry；
S4.2：Concrete pedestal of constructing is corrected original ground concordant before the plate face of the pedestal is contacted with bedrock surface
And it is excavated to bedrock surface, it is ensured that concrete pedestal plate face is fitted closely with bedrock surface；Either after being excavated to bedrock surface, shut
Template, use are cast-in-place；
S4.3：Gooseneck is installed, gooseneck is installed and connected in concrete pedestal；
S4.4：Steel longeron is installed, steel longeron is installed and connected in concrete pedestal；
S4.5：The free end of stretch-draw prestressing force anchor cable in step S1 is corresponded to and is connected and fixed with steel longeron；
S4.6：Inclined cable-stayed or cable ring rope are installed, by itself and the gooseneck anchor connection in step S4.3, the other end with
Arch rib is fixedly connected.
Preferably, the anchoring of the construction method of above-mentioned a kind of no buttress suspension pouring arch-type bridge, wherein step S5 stream lines both can be with
It is completed in vertical shaft, also directly p-type anchor can be used to anchor.
The technical solution efficiently uses the strong orographic condition in bridge location area, and especially rock integrality is good, the high feelings of intensity
Condition is directly fixedly connected across anchor cable hole path with bridge location area rock using anchor cable, and the other end is fixedly connected with arch rib, and simultaneously
In conjunction with using anchor system after prestressing force type, anchor force structure after prestress anchorage cable is made, by between prestress anchorage cable and rock
Frictional force resists the anchor cable pulling force of arch rib, simple in sturcture, ingenious in design, rationally distributed, and structure stress is clear, construction
It is convenient.Existing structure is made full use of simultaneously, project cost is reduced, greatly reduces construction volume, saved construction period.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (9)
1. a kind of construction system of no buttress suspension pouring arch-type bridge, which is characterized in that including：
Bridge location area rock, is equipped with and is suitable for the vertical shaft that anchorage cable anchoring provides operating space, and the vertical shaft is equipped with and is worn suitable for anchor cable
The anchor cable hole path crossed；
Anchor cable, one end are fixedly connected across the anchor cable hole path with bridge location area rock, and the other end is fixed with arch rib to be connected
It connects, the arch rib is integrally connected by skewback and bridge location area rock；
Anchor system after prestressing force type comprising the concrete pedestal being fixedly connected with bridge location area rock, the coagulation soil matrix
Seat side connects prestress anchorage cable, the prestress anchorage cable extend linearly into rock it is fixed, the other side connect Inclined cable-stayed or
Cable ring rope, the Inclined cable-stayed or the cable ring rope other end are fixedly connected with arch rib.
2. a kind of construction system of no buttress suspension pouring arch-type bridge according to claim 1, it is characterised in that：The prestressing force type
Anchor system includes the concrete pedestal afterwards, and one lateral plates are fitted closely with bedrock surface, and the opposite other side is fixedly connected with
Several goosenecks and steel longeron；
Prestress anchorage cable, one end are extended linearly across the concrete pedestal and the steel longeron anchor connection, another end line
Property extend in rock it is fixed；
Inclined cable-stayed or cable ring rope, one end is extended linearly fixes company with the gooseneck anchor connection, the other end with arch rib
It connects.
3. a kind of construction system of no buttress suspension pouring arch-type bridge according to claim 2, which is characterized in that the coagulation soil matrix
Seat is serrated, including the plate face, and protrudes from the vertical concrete rib at several intervals that are mutually parallel of the plate face.
4. a kind of construction system of no buttress suspension pouring arch-type bridge according to claim 3, which is characterized in that several steel are horizontal
Beam, which is mutually parallel, is spaced setting, is fixedly connected respectively with the outermost vertical concrete rib, and outermost through this is located at
Other described vertical concrete ribs between the vertical concrete rib of side.
5. a kind of construction system of no buttress suspension pouring arch-type bridge according to claim 3, which is characterized in that several steel are vertical
Beam is located above the gooseneck, corresponds the top surface for being fixedly connected on the vertical concrete rib respectively.
6. a kind of construction system of no buttress suspension pouring arch-type bridge according to claim 1, which is characterized in that the prestressing force type
Anchor system is set to the lower section of the vertical shaft afterwards, respectively the corresponding different segment that the arch rib is connected by anchor cable.
7. a kind of construction method of no buttress suspension pouring arch-type bridge, which is characterized in that include the following steps：
S1：It determines bridge location area rock integrality and intensity value, judges whether that anchor cable force can be met；
S2：Using manually digging hole or existing vertical shaft is utilized, operating space is provided for anchorage cable anchoring；
S3：According to design anchor cable angle, the anchor cable hole path passed through suitable for anchor cable of constructing out；
S4：Using anchor system after prestressing force type, its prestress anchorage cable is extended linearly into rock and is fixed, the other end passes through oblique pull
Button is hung or cable ring rope is fixedly connected with arch rib；
S5：By the anchor cable break-through being fixedly connected with arch rib to Shaft Location, and the anchor cable is corresponded into the anchor cable in step S3
Hole path is fixed on rock.
8. a kind of construction method of no buttress suspension pouring arch-type bridge according to claim 7, which is characterized in that answered in advance in step S4
Anchor system construction includes the following steps after power type：
S4.1：Construction prestress anchorage cable, in the deep of rock, arrangement beats anchor cable hole, and anchor cable steel strand wires are fixedly mounted wherein；
S4.2：Construct concrete pedestal, before the plate face of the pedestal is contacted with bedrock surface, by original ground amendment concordantly and open
It digs to bedrock surface, it is ensured that concrete pedestal plate face is fitted closely with bedrock surface；Either after being excavated to bedrock surface, mould is shut
Plate, use are cast-in-place；
S4.3：Gooseneck is installed, gooseneck is installed and connected in concrete pedestal；
S4.4：Steel longeron is installed, steel longeron is installed and connected in concrete pedestal；
S4.5：The free end of stretch-draw prestressing force anchor cable in step S1 is corresponded to and is connected and fixed with steel longeron；
S4.6：Inclined cable-stayed or cable ring rope, by itself and the gooseneck anchor connection in step S4.3, the other end and arch rib are installed
It is fixedly connected.
9. a kind of construction method of no buttress suspension pouring arch-type bridge according to claim 7, which is characterized in that step S5 stream lines
Anchoring can both be completed in vertical shaft, also directly p-type anchor can be used to anchor.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110851953A (en) * | 2019-09-30 | 2020-02-28 | 中铁十二局集团有限公司 | Method, system and medium for calculating anchoring force of long anchor cable penetrating through non-filled karst cave |
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