CN104195946B - The time phasing method of the dual-purpose suspension bridge of multilayer deck public affairs rail - Google Patents
The time phasing method of the dual-purpose suspension bridge of multilayer deck public affairs rail Download PDFInfo
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- CN104195946B CN104195946B CN201410316828.8A CN201410316828A CN104195946B CN 104195946 B CN104195946 B CN 104195946B CN 201410316828 A CN201410316828 A CN 201410316828A CN 104195946 B CN104195946 B CN 104195946B
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Abstract
The present invention discloses a kind of stage construction method of the dual-purpose suspension bridge of multilayer deck public affairs rail, the suspension bridge is three layers of bridge floor suspension bridge that dual-layer Parallel main truss structure is constituted, track traffic is located at the superiors, during highway communication is located at, lower floor, can be constructed in highway communication operation using the stage construction method and track traffic of track traffic of constructing after first Construction Highway traffic, using three layers of bridge floor suspension bridge scheme, it is not only able to improve structure efficiency, enhancing structure is to the adaptable of landform, also accommodate the demand of track traffic and highway communication built by separate periods, Near Future Project construction input is effectively reduced, avoid resources idle, simultaneously can meet the requirement that construction period in long term do not interrupt having traffic circulation, reduce impact of the construction to traffic to greatest extent.
Description
Technical field
The present invention relates to field of bridge construction, the time phasing side of the dual-purpose suspension bridge of more particularly to a kind of multilayer deck public affairs rail
Method.
Background technology
Urban track traffic crosses over rivers, mountain valley in the lump with urban road generally by the way of rail is built jointly, to save
Investment.During for realizing that track traffic is crossed river and meets that higher ship under bridge is current to be required, large-span suspension bridge side is often adopted
Formula crosses over river surface.Simultaneously by the way of rail is built together, preferably using rare bridge location resource structure efficiency can be improved.But
Due to being limited by structure stress and being affected, the main push-towing rope of suspension bridge, steel truss girder are generally completed using disposable enforcement, reserve good track
Cross the passage in river.In practical situation, the construction of track routes often lags behind bridge itself, crosses long-term not busy after river passage builds up
Put, reduce the utilization ratio of fund.If can be at the beginning of the construction of bridge, it is considered to main push-towing rope, the scheme of steel truss girder built by separate periods, closely
Phase only implements highway communication part, during track routes whole implementation at a specified future date, increases track traffic part, then will greatly improve resource
Utilization rate, and can preferably adapt to the current requirement of track traffic.Enforcement rail traffic structure at a specified future date, except fully examining
Consider outside the demand of structure stress, the most key is the interference that construction period to be reduced passes through to thoroughfare traffic.
Content of the invention
In order to solve the above problems, it is an object of the invention to provide a kind of based on the multilayer deck public affairs dual-purpose suspension bridge of rail
Time phasing method, using track traffic and highway communication stage construction, meet structure can time phasing requirement, effectively reduce
Near Future Project construction puts into, and reduces resources idle.Impact of the construction in later period to traffic can also be reduced to greatest extent simultaneously.
The stage construction method of the dual-purpose suspension bridge of the public rail of the multilayer deck of the present invention, the bridge are that dual-layer Parallel main truss is tied
Three layers of bridge floor suspension bridge that structure is constituted, track traffic are located at the superiors, during highway communication is located at, lower floor, using first Construction Highway
After traffic construct track traffic stage construction method and to greatest extent reduce track traffic construction period to existing highway communication
The interference of operation, its construction method are comprised the following steps：
A. highway communication construction in the recent period:
A1. first construction basis, bridge tower, anchorage；
A2., main push-towing rope I is installed and sets up lower floor's main truss and set a roof beam in place and remain for the truss abdomen that later stage erection upper strata main truss is set a roof beam in place in advance
Bar interface, then carries out deck paving and forms lower floor's bridge floor and intermediate deck；
A3. deck paving；
B. track traffic construction at a specified future date:
B1. construction main push-towing rope II and on intermediate deck set up meet upper strata main truss bridge erection, movement, install positioning needs
Removable construction platform, installing in construction platform includes the upper layer bridge panel and top boom of track beam in length and breadth, install on the inside of
Hoist cable；
B2., the upper web member of upper strata main couple beam is installed by the reserved joint of lower floor's main truss；
B3. carry out upper deck of bridge to mat formation and track construction.
Further, in step b1, set a roof beam in place using upper strata main truss is set up by the way of assembly on portable assembling support.
Further, lower floor's main truss is set a roof beam in place, and just connects, formed after being first hinged
Recent structure；Upper strata main couple beam column part is transported at bridge location king-tower using loose mail mode, from king-tower to main span span centre direction by
Section is assembled；Sequence construction according to upper layer bridge panel (longitudinal and cross beam containing track) → top boom → interior side sling.Whole upper stratas
After floorings installation, interim counterweight is installed on upper layer bridge panel, adjusts the linear of main push-towing rope II, section installs upper strata master section by section
The upper web member of girder truss, removes interim counterweight, and between welding sections, floorings seam forms whole upper strata main truss and sets a roof beam in place；
Further, the dual-layer Parallel main truss structure include the top boom being connected with track cross beam and with track lower and upper cross-member
The middle chord member for connecting respectively and lower boom, are cross-linked to form the node on chord member by web member between chord member.
Beneficial effects of the present invention：The time phasing method of the dual-purpose suspension bridge of the public rail of the multilayer deck of the present invention, in conjunction with rail
Road, the river demand excessively of urban road, propose vertical layered Traffic Organization, track traffic are arranged in the superiors' bridge floor,
Urban transportation is arranged in middle level, lower floor's bridge floor according to current direction, forms vertical three layers of Bridge alternatives, and three layers of bridge floor are handed over
Logical arrangement, effectively raises section rigidity, improves the span ability of bridge, meets the Deformation control that track traffic operation is proposed
Require, close orbit construction and lag behind the practical situation of urban road, bridge structure is adjusted to clad steel truss form, and according to
Single main push-towing rope is designed to two with mobile load by the deadweight that upper and lower layer steel truss girder undertakes, and undertakes recent, at a specified future date load respectively, it is to avoid
Early excise track Rotating fields, improve resource utilization, construct, it is ensured that do not interrupt lower floor's traffic under the engineering method, and
The current headroom of intermediate deck 4.5m is can guarantee that, reduces impact of the construction to middle level traffic to greatest extent；Meanwhile, at mobile
Rod member is carried out on frame assembled, be easily guaranteed that splicing accuracy, be difficult to be affected by operation Bridge deformation.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the recent construction operating mode schematic diagram of the present invention；
Fig. 2 is the construction operating mode schematic diagram at a specified future date of the present invention；
Fig. 3 is the suspension bridge profile that construction is completed；
Fig. 4 is dual-layer Parallel main truss structure schematic diagram.
Specific embodiment
Fig. 1 is the recent construction operating mode schematic diagram of the present invention；Fig. 2 is the construction operating mode schematic diagram at a specified future date of the present invention, and Fig. 3 is
The suspension bridge profile that construction is completed, structural representations of the Fig. 4 for dual-layer Parallel main truss structure.As shown in the figure：1 main push-towing rope I, 2 is led
I suspension rod of cable, chord member in 3,4 times web members, 5 lower booms, 6 sills, 7 ballasts, 8 middle cross beams, 9 top booms, web member, 11 main push-towing ropes on 10
IIth, 21 main push-towing rope, II suspension rod, 12 entablatures, the assembled moulding bed of the movement of track longeron 13,14,15 upper strata main trusses set a roof beam in place, 16 reserved joints
Gusset plate.The stage construction method of the dual-purpose suspension bridge of multilayer deck public affairs rail, the bridge are constituted for dual-layer Parallel main truss structure
Three layers of bridge floor suspension bridge, track traffic is located at the superiors, during highway communication is located at, lower floor, using first Construction Highway traffic after
Construction track traffic stage construction method and track traffic can highway communication operation in construct, its construction method includes following
Step：
A. highway communication construction in the recent period:
A1. first construction basis, bridge tower, anchorage：
A2., main push-towing rope I 1 is installed and set up lower floor main truss set a roof beam in place and remain in advance the later stage set up upper strata main truss set a roof beam in place 15 truss
Web member interface, then carries out deck paving and forms lower floor's bridge floor and intermediate deck；
A3. deck paving；
Anchorage construction：Anchorage resists tension of main cable by gravity, and anchor block is mass concrete construction, needs according to temperature
Degree control program carries out plane point storehouse and vertical layered, being layered according to certain construction plan by stages and being poured and supported to anchor block
Shield.Notice that hydro-thermalization affects, prevent anchor block from producing crack.Anchor block should form entirety with basis.
The construction of tower：Bridge tower is usually gate frame structure, pours tower body concrete, applying in upper king-post strut using creeping formwork method
Interim strut can be arranged during work guarantees that tower body structure is stable.Construction period is needed to install by Sarasota again and is completely independent with Sarasota
Tower crane carry out the transport of material, installation.
Main cable erection：Anchorage, bridge tower engineering are completed, and main cable saddle and the installation of scattered cable saddle are in place, after trailer system is set up, so that it may
Worked with carrying out main cable erection.The erection method of main push-towing rope mainly has aerial wire feed method (AS methods) and prefabricated strand method (PWS methods),
The method of prior art is all, here is omitted.
Lower floor's main truss bridge erection：Suspension bridge steel truss girder arrangement and method for construction has：Rod member support is assembled, rod member suspention is assembled, whole
Body section is assembled.In the case of under bridge, navigation condition is preferable, generally using overall section assembling.Trusses rod member is in factory process
Afterwards, shipping lifts by crane assembly to precalculated position paragraph by paragraph using deck erection gantry.
B. track traffic construction at a specified future date:
B1. construction main push-towing rope II and on intermediate deck set up meet upper strata main truss set a roof beam in place 15 erections, movement, install positioning need
The removable construction platform that wants；
Specific construction step is：The upper deck of bridge structure that implements at a specified future date, is not suitable for being constructed using integral hoisting, can only be taken
Loose mail transports the scheme of spelling, it is possible to reduce the requirement of Lifting Capacity.Main truss 15 rod members of setting a roof beam in place in upper strata are transported using loose mail mode
To at bridge location king-tower, assembled paragraph by paragraph to main span span centre direction from king-tower.During construction, first on mobile support, upper layer bridge panel is laid
(longitudinal and cross beam containing track), then top boom is installed, form the deck structrue of single sections.By installing hoist cable, by bridge floor
Plate weight is transferred on main push-towing rope II.To span centre reach support, repeat the installation of next sections deck structrue, until whole
Upper deck of bridge structure construction is completed.Thereafter, by applying interim counterweight, adjustment main push-towing rope II and upper deck of bridge on upper deck of bridge
The absolute altitude of plate, linear, the distance of top boom and middle chord member is controlled, the upper web member of upper strata main couple beam 15 is progressively installed, in upper
Bridge deck structure connection is integral, finally completes intersegmental bridge floor attachment weld, forms whole upper strata main truss and sets a roof beam in place 15.
B2. carry out upper deck of bridge to mat formation and track construction.
In the present embodiment, dual-layer Parallel main truss structure include the top boom 9 being connected with track entablature 12 and with track in
Sill (8, the middle chord member 3 for 6) connecting respectively and lower boom 5, between chord member by web member (10,4) be cross-linked to form and be located at
Node on chord member.
Finally illustrate, above example is only unrestricted in order to technical scheme to be described, although with reference to compared with
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, and without deviating from the objective and scope of technical solution of the present invention, which all should be covered at this
In the middle of the right of invention.
Claims (4)
1. the stage construction method of the dual-purpose suspension bridge of a kind of multilayer deck public affairs rail, it is characterised in that：The suspension bridge is double-deck flat
Three layers of bridge floor suspension bridge that row main truss structure is constituted, track traffic are located at the superiors, during highway communication is located at, lower floor, using elder generation
After Construction Highway traffic construct track traffic stage construction method and track traffic can highway communication operation in construct, which is applied
Work method is comprised the following steps：
A. highway communication construction in the recent period:
A1. first construction basis, bridge tower, anchorage；
A2., main push-towing rope I is installed and is set up lower floor main truss and is set a roof beam in place and remain for the later stage in advance and set up the truss web that upper strata main truss sets a roof beam in place and connect
Mouthful, then carry out deck paving and form lower floor's bridge floor and intermediate deck；
A3. deck paving；
B. track traffic construction at a specified future date:
B1. construction main push-towing rope II and on intermediate deck set up meet upper strata main truss bridge erection, movement, install positioning needs can
Mobile construction platform, installing in construction platform includes the upper layer bridge panel of track beam in length and breadth, and top boom, install on the inside of hang
Rope；
B2. the web member of upper strata main couple beam is installed by set a roof beam in place reserved joint of lower floor's main truss；
B3. carry out upper deck of bridge to mat formation and track construction.
2. the stage construction method of the dual-purpose suspension bridge of multilayer deck according to claim 1 public affairs rail, it is characterised in that：Step
In b1, set a roof beam in place using upper strata main truss is set up by the way of assembly on portable assembling support.
3. the stage construction method of the dual-purpose suspension bridge of multilayer deck according to claim 2 public affairs rail, it is characterised in that：Lower floor
Main truss is set a roof beam in place, and just connects, form recent structure after being first hinged；Upper strata main couple
Beam column part is transported at bridge location king-tower using loose mail mode, assembled paragraph by paragraph to main span span centre direction from king-tower；First construction includes rail
The upper layer bridge panel of road longitudinal and cross beam, top boom of then constructing, interior side sling of finally constructing；All upper layer bridge panel is installed
Cheng Hou, installs interim counterweight on upper layer bridge panel, adjusts the linear of main push-towing rope II, and section installs the abdomen of upper strata main couple beam section by section
Bar, removes interim counterweight, and between welding sections, floorings seam forms whole upper strata main truss and sets a roof beam in place.
4. the stage construction method of the dual-purpose suspension bridge of multilayer deck according to claim 3 public affairs rail, it is characterised in that：Described
Dual-layer Parallel main truss structure include the top boom being connected with track cross beam and the middle chord member that is connected with track lower and upper cross-member respectively and
Lower boom, is cross-linked to form the node on chord member by web member between chord member.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410316828.8A CN104195946B (en) | 2014-07-04 | 2014-07-04 | The time phasing method of the dual-purpose suspension bridge of multilayer deck public affairs rail |
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| CN201410316828.8A CN104195946B (en) | 2014-07-04 | 2014-07-04 | The time phasing method of the dual-purpose suspension bridge of multilayer deck public affairs rail |
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| CN104195946A CN104195946A (en) | 2014-12-10 |
| CN104195946B true CN104195946B (en) | 2017-03-15 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106988201B (en) * | 2017-03-16 | 2019-08-06 | 中铁大桥勘测设计院集团有限公司 | A kind of double deck girder of suspension bridge structure |
| CN108103947A (en) * | 2017-12-21 | 2018-06-01 | 芜湖铁路桥梁制造有限公司 | The construction method of three layers of bridge |
| CN109112961B (en) * | 2018-10-30 | 2021-03-02 | 长沙学院 | Ultrathin bridge deck structure, truss bridge and construction method of truss bridge |
| CN110241974B (en) * | 2019-04-29 | 2023-11-17 | 深圳市建筑设计研究总院有限公司 | Full-bolt-connection truss type steel reinforced concrete beam and construction method |
| CN111535185A (en) * | 2020-04-30 | 2020-08-14 | 中交二公局第二工程有限公司 | Method for installing plate girder combination beam of suspension bridge |
| CN111424561A (en) * | 2020-05-07 | 2020-07-17 | 西南交通大学 | Layered suspension structure of single-side double-main-cable steel truss stiffening beam suspension bridge |
| CN112921813B (en) * | 2021-01-25 | 2022-06-21 | 中建科工集团有限公司 | Double-layer multi-span bridge construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB931297A (en) * | 1959-09-08 | 1963-07-17 | Strabag Bau Ag | An arrangement for the construction of concrete bridges and like structures |
| US5771518A (en) * | 1989-06-16 | 1998-06-30 | Roberts; Michael Lee | Precast concrete bridge structure and associated rapid assembly methods |
| CN1020491C (en) * | 1990-11-18 | 1993-05-05 | 黄国才 | Concrete arch, its construction and utilization |
| CH687623A5 (en) * | 1994-05-03 | 1997-01-15 | Steiner Urs A | Tonnes Heavy stationary vera forming royal scaffolding. |
| CN1231363A (en) * | 1999-04-19 | 1999-10-13 | 上海辛耕置业发展有限公司 | Three-layer three-purpose bridge |
| US8266751B2 (en) * | 2009-12-10 | 2012-09-18 | Yidong He | Method to compress prefabricated deck units by tensioning supporting girders |
| CN103147385B (en) * | 2013-03-13 | 2014-12-24 | 江苏省淮安市航道管理处 | Double-spliced extradosed cable-stayed bridge |
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