CN207987705U - RPC steel truss combined bridge deck, combined double-layer bridge floor and combined double-layer continuous bridge - Google Patents

Abstract

The utility model discloses a kind of RPC steel truss combined bridge decks, combined double-layer bridge floor and combined double-layer continuous bridge, the RPC steel truss combined bridge deck includes purlin box beam, purlin box beam includes top plate, lower wing plate set on bottom and two blocks of webs set on both sides, two pieces of web lower parts both sides have been respectively and fixedly connected with RPC stiffened portions, RPC stiffened portions include end template and RPC layers, end template one end is fixed in web lower part, the other end extends outwardly along the direction of purlin box beam both sides, RPC layers are filled in end template, in the region that web and lower wing plate both sides enclose, needle beam is vertically connected on web, bridge floor steel sole plate is connected on needle beam, RPC floorings have been poured on bridge floor steel sole plate.Lower layer's bridge floor is above-mentioned RPC steel truss combined bridge decks in the double deck of the utility model.The bridge floor of the utility model double-deck continuous girder bridge is above-mentioned RPC steel truss combined double-layer bridge floor.The utility model has many advantages, such as that intensity is high, light-weight, load-bearing is good, antifatigue, long lifespan.

Description

RPC steel truss combined bridge deck, combined double-layer bridge floor and combined double-layer continuous bridge

Technical field

The utility model belongs to bridge structure field more particularly to RPC steel truss combined bridge deck, combined double-layer bridge floor and combination Double-deck continuous girder bridge.

Background technology

Existing highway and Urban Bridge are mostly single layer flat bridge, this bridge when current motor vehicle, non-motor vehicle and Pedestrian can interfere with each other, and not only affect river speed, so that trip is seemed very dangerous, about especially with net in recent years The rapid development of shared bicycle, bicycle have become the essential vehicles of people's go off daily, but using voluntarily Vehicle cross river often and can face without specific cycle track and the climbing of dangerous and upper bridge it is difficult the problems such as, therefore this form Bridge does not meet the development trend of future transportation.In order to solve this problem, it is wide and build left and right two width bridge that bridge can be increased, Bridge floor beam overall is set to reach 34~40m, but this structural cost is higher and constructional difficulties, has in contrast bilevel double Layer bridge is more advantageous.

Double-decker bridge is initially the passage for rail traffic and highway, and the contour bilayer as nineteen fifty-seven builds up is combined Wuhan Yangtze River Bridge, what nineteen sixty-eight built up gets higher the combined Nanjing Yangtze River Bridge of bilayer and the band built up for 1993 arch pair The combined Jiujiang Yangtze Bridge of layer.Steel truss double-decker bridge was gradually promoted in Urban Bridge in recent years, such as China's seat of honour highway and the shared suspended cable stiffening bilayer steel girder bridge (Dongguan 208m Dongjiang River Bridge) of municipal administration and city track of having stable political situation are total It is put more energy into double-decker bridge (the curved bridge in the Chongqing 462m powder room) etc. with oblique pull, these bridges are often required for outer structure to put more energy into, practice have shown that, tiltedly The drag-line of bridge is drawn generally to be required for replacing within every 20 years, later maintenance expense is sufficiently expensive, therefore puts more energy into without the outer structure such as oblique pull, suspension cable Conventional double truss-type bridges retrieve the attention of people.

With Chinese vehicle fleet size sharp increase, wherein the number of overweight vehicle is also constantly soaring, this load-bearing energy to bridge More stringent requirements are proposed for power and anti-fatigue performance, is even more a challenge for the conventional double truss-type bridges put more energy into without outer structure.It is living Property powder concrete (Reactive Powder Concrete) as a kind of high density, high intensity, high-durability and stability it is intact Concrete pedestal material, for ordinary concrete, intensity has improved 3~4 times, and elasticity modulus is also 1.5 times big, therefore can To consider for RPC to be applied in the double-deck truss bridge structure load-bearing capacity to improve bridge and antifatigue energy performance.

Utility model content

The technical problems to be solved in the utility model is to overcome the shortcomings of the prior art, and it is high, again to provide a kind of intensity Measure light, good, antifatigue, long lifespan the RPC steel truss combined bridge deck of load-bearing, combined double-layer bridge floor and combined double-layer continuous bridge.

In order to solve the above technical problems, the utility model proposes technical solution be：

A kind of RPC steel truss combined bridge deck, including purlin box beam, the purlin box beam include top plate, the bottom wing set on bottom Plate and two blocks of webs set on both sides, two pieces of web lower parts both sides have been respectively and fixedly connected with RPC stiffened portions, the RPC stiffened portions Including end template and RPC layers, described end template one end is fixed in web lower part, and the other end is outside along the direction of purlin box beam both sides Extend, described RPC layers is filled in the region that end template, web and lower wing plate both sides enclose, vertical affixed on the web There is needle beam, bridge floor steel sole plate is connected on the needle beam, RPC floorings have been poured on the bridge floor steel sole plate.

Above-mentioned RPC steel truss combined bridge decks, it is preferred that on the end template, web, lower wing plate and bridge floor steel sole plate uniformly It is provided with peg, the bar-mat reinforcement for putting more energy into is equipped in described RPC layers and RPC floorings.

Above-mentioned RPC steel truss combined bridge decks, it is preferred that the end template favours horizontally arranged, and the RPC is made to add Strength portion is thicker close to purlin box beam one end, and the thickness of RPC stiffened portions is gradually reduced with increasing at a distance from the box beam of purlin.

Above-mentioned RPC steel truss combined bridge decks, it is preferred that the spacing of the adjacent needle beam is 1.4~1.8m, the RPC Bridge floor plate thickness is 30~50mm, and tar sand wearing course has been poured on the RPC floorings, and the tar sand abrasion layer thickness is 15~25mm.

A kind of RPC steel truss combined double-layer bridge floor, including lower layer's bridge floor, upper deck of bridge and be used for load-bearing and be connected and fixed described The steel stringers beam of lower layer's bridge floor and upper deck of bridge, lower layer's bridge floor are such as above-mentioned RPC steel truss combined bridge decks, the upper layer bridge Face includes winding up purlin box beam, the purlin box beam of winding up include wind up bottom plate, set on top upper flange and be set to both ends Two blocks of case webs that wind up, the case web top both sides of winding up have been respectively and fixedly connected with upper layer RPC stiffened portions, and the upper layer RPC adds Strength portion includes upper layer end template and upper layer RPC layers, and upper layer end template one end is fixed in case web top of winding up, and the other end is solid It is connected to upper deck of bridge steel sole plate, described upper layer RPC layers are filled in upper layer end template, wind up case web and upper flange both sides enclose Region in, the upper deck of bridge steel sole plate downward vertical is connected with stringer, has been poured on the upper deck of bridge steel sole plate Layer RPC floorings, the steel stringers beam be set to purlin box beam and the upper deck of bridge of lower layer's bridge floor wind up purlin box beam it Between.

Above-mentioned RPC steel truss combined double-layer bridge floors, it is preferred that the upper layer end template, the case web that winds up, upper flange and on It is evenly arranged with peg on layer bridge floor steel sole plate, equipped with the reinforcing bar for putting more energy into described upper layer RPC layer and upper layer RPC floorings Net.

Above-mentioned RPC steel truss combined double-layer bridge floors, it is preferred that the upper layer end template favours horizontally arranged, makes The upper layer RPC stiffened portions are thicker close to purlin box beam one end of winding up, and the thickness of upper layer RPC stiffened portions with purlin box of winding up The distance of beam increases and is gradually reduced, and the upper deck of bridge steel sole plate is waveform configuration, and the stringer is fixed in upper deck of bridge The downwardly convex place of steel sole plate.

Above-mentioned RPC steel truss combined double-layer bridge floors, it is preferred that the spacing of the adjacent stringer is 1.4~1.8m, upper layer RPC bridge floor plate thickness is 50~150mm, and tar sand wearing course has been poured on the upper layer RPC floorings, and the pitch is sanded Consumption layer thickness is 30~50mm.

A kind of RPC steel truss combined double-layer continuous bridge, including pile foundation, bridge pier, cap, bearing and bridge floor, the pile foundation Plinth is embedded to ground end, and the bridge pier is set on the pile foundation, and straining beam is vertically equipped between the bridge pier, and the cap is set to Pier coping portion, the bridge floor are connect by the bearing with cap, and the bridge floor is above-mentioned RPC steel truss combined double-layer bridge floors, The pile foundation is to bore to bury hollow steel pipe pile.

Above-mentioned RPC steel truss combined double-layer continuous bridges, it is preferred that be equipped with Quick motor vehicle on the upper deck of bridge Road, is equipped with bus dedicated Lanes and equipment of small motor track on lower layer's bridge floor, and the both sides of lower layer's bridge floor are equipped with outstanding Arm outrigger is equipped with non-motorized lane, electrical salf-walking track and pavement on the cantilever outrigger.

Compared with prior art, the utility model has the advantage of：

The RPC steel truss combined bridge decks of the utility model cancel the plane diagonal brace system at former truss top bottom, using high elastic modulus RPC, purlin box beam lower wing plate and end template combine common stress, form RPC steel truss and combine new construction, lower wing plate can increase The tension and compression area of purlin box beam, and then the permitted bearing capacity of compression is substantially improved, RPC, can be effective in the advantage of intensity etc. It puts more energy into lower wing plate, improves bridge floor load-bearing anti-pressure ability, which can be with relative to general steel-concrete architecture quality The length for mitigating 30~50%, realizing the lightness of bridge floor, while can also effectively reduce purlin height, reduce two sides access bridge.This practicality Novel RPC steel truss combined double-layer bridge floors setting upper layer and lower layer can effectively be directed to mixed traffic and carry out function division, greatly improve Current efficiency and safety, wherein upper deck of bridge replace U ribs with stringer, using RPC floorings, bridge floor steel sole plate, small vertical The structure of beam and the common stress of end template promotes the load-bearing anti-pressure ability of bridge floor, reduces bridge deck weight, stringer, which is increased, to be widened Weld seam quantity can be effectively reduced, antifatigue durable performance is improved.The RPC steel truss composite continuous bridge intensity of the utility model It is high, light-weight, load-bearing anti-pressure ability is strong, double layer design has advantage in mixed traffic, ensures current safety and unobstructed.

Description of the drawings

Fig. 1 is the cross-sectional configuration schematic diagram of the utility model RPC steel truss composite continuous bridges.

Fig. 2 is the longitudinal plane structure schematic diagram of the utility model RPC steel truss composite continuous bridges.

Fig. 3 is the cross-sectional configuration schematic diagram of the utility model RPC steel truss combined double-layer bridge floors.

Fig. 4 is the longitudinal plane structure schematic diagram of the utility model RPC steel truss combined double-layer bridge floors.

Fig. 5 is the cross-sectional configuration schematic diagram of the utility model RPC steel truss combined double-layers bridge floor bridge floor at the middle and upper levels.

Fig. 6 is the cross-sectional configuration schematic diagram of lower layer's bridge floor in the utility model RPC steel truss combined double-layer bridge floors.

Fig. 7 is the partial enlarged view of A in Fig. 6.

Fig. 8 is the longitudinal plane structure schematic diagram of lower layer's bridge floor in the utility model RPC steel truss combined double-layer bridge floors.

Marginal data：

1, bridge floor；A, lower layer's bridge floor；A1, purlin box beam；A11, top plate；A12, lower wing plate；A13, web；A2, RPC add Strength portion；A21, end template；A22, RPC layers；A3, needle beam；A4, bridge floor steel sole plate；A5, RPC floorings；A6, peg；A7, steel Muscle net；A8, tar sand wearing course；A9, cantilever outrigger；B, upper deck of bridge；B1, purlin box beam of winding up；B11, bottom of winding up plate； B12, upper flange；B13, wind up case web；B2, upper layer RPC stiffened portions；B21, upper layer end template；B22, upper layer RPC layers；It is b3, small Longeron；B4, upper deck of bridge steel sole plate；B5, upper layer RPC floorings；C, steel stringers beam；2, pile foundation；21, it bores and buries steel pipe hollow Stake；3, bridge pier；4, cap；5, bearing；6, straining beam.

Specific implementation mode

For the ease of understanding the utility model, below in conjunction with Figure of description and preferred embodiment to the utility model It does and more comprehensively, meticulously describes, but the scope of protection of the utility model is not limited to following specific examples.

As depicted in figs. 1 and 2, the RPC steel truss combined double-layer continuous bridges of the present embodiment, including pile foundation 2, bridge pier 3, cap Beam 4, bearing 5 and bridge floor 1, pile foundation 2 are embedded to ground end, and bridge pier 3 is set on pile foundation 2, and straining beam is vertically equipped between bridge pier 3 6, cap 4 is set to 3 top of bridge pier, and bridge floor 1 is connect by bearing 5 with cap 4, and pile foundation 2 is to bore to bury hollow steel pipe pile 21, should RPC steel truss combined double-layer continuous bridge intensity is high, light-weight, load-bearing anti-pressure ability is strong, and double layer design has in mixed traffic Advantage, ensures current safety and unobstructed, pile foundation 2 using no cushion cap, variable cross-section, major diameter brill bury hollow steel pipe pile 21 can Mitigate the dead weight of 2 half of pile foundation, less construction cost effectively shortens the duration.

In the present embodiment, Quick motor vehicle road is equipped on upper deck of bridge b, it is special to be equipped with bus on lower layer bridge floor a The both sides in track and equipment of small motor track, lower layer bridge floor a are equipped with cantilever outrigger a9, and non-motor vehicle is equipped on cantilever outrigger a9 Road, electrical salf-walking track and pavement complete communication function by the track arrangement to upper deck of bridge b and lower layer bridge floor a Subregion, upper deck of bridge b pass through for Quick motor vehicle, ensure that it crosses the efficiency in river, lower layer bridge floor a is equipped with bus zone, minicomputer The slow moving vehicles track such as motor-car road and Agricultural automotive vehicle, itself and Quick motor vehicle are kept apart, and will not be influenced each other, and are met mixed Close the demand of traffic；Non-motorized lane, electrical salf-walking track and pavement require relatively low, setting to the load-bearing anti-pressure ability of bridge floor Can be saved on cantilever outrigger a9 space, reduce construction cost, while by non-motor vehicle, electric bicycle and pedestrian with it is motor-driven Vehicle is kept apart, and a safe and efficient gap bridge channel is provided for.

Bridge floor 1 in the RPC steel truss combined double-layer continuous bridges of the present embodiment is RPC steel truss groups as shown in Figures 3 to 5 It closes double deck, including lower layer bridge floor a, upper deck of bridge b and is used for load-bearing and is connected and fixed lower layer bridge floor a and upper deck of bridge b Steel stringers beam c, upper deck of bridge b include the purlin box beam b1 that winds up, the purlin box beam b1 that winds up include wind up bottom plate b11, be set to top The upper flange b12 in portion and two pieces of case web b13 that wind up set on both ends, the case tops web b13 both sides of winding up have been respectively and fixedly connected with Layer RPC stiffened portion b2, upper layer RPC stiffened portions b2 includes upper layer end template b21 and upper layer RPC layers of b22, upper layer end template b21 mono- End is fixed in the tops case web b13 of winding up, and the other end is connected with upper deck of bridge steel sole plate b4, and upper layer RPC layers of b22 is filled in Layer end template b21, wind up case web b13 and region that the both sides upper flange b12 enclose in, hang down below upper deck of bridge steel sole plate b4 It directly is connected with stringer b3, upper layer RPC floorings b5 have been poured on upper deck of bridge steel sole plate b4, steel stringers beam c is set to lower layer's bridge Between the purlin box beam b1 that winds up of purlin the box beam a1 and upper deck of bridge b of face a, the RPC steel truss combined double-layer bridges of the utility model Upper layer and lower layer, which is arranged, in face can effectively be directed to mixed traffic progress function division, greatly improve current efficiency and safety, wherein Upper deck of bridge b replaces U ribs with stringer b3, using upper layer RPC floorings b5, upper deck of bridge steel sole plate b4, stringer b3, upper layer The structure of end template b21 and the upper layer RPC layers of common stress of b22 promote the load-bearing anti-pressure ability of bridge floor, reduce bridge deck weight, Stringer b3, which increases to widen, can effectively reduce weld seam quantity, improve antifatigue durable performance.

In the present embodiment, upper layer end template b21, wind up on case web b13, upper flange b12 and upper deck of bridge steel sole plate b4 It is evenly arranged with the bar-mat reinforcement a7, peg a6 being equipped in peg a6, upper layer RPC layers of b22 and upper layer RPC floorings b5 for putting more energy into The load-bearing resistance to compression of bridge floor can be further promoted with bar-mat reinforcement a7 with upper layer RPC layers of b22 collective effect, the stability of reinforcement structure Ability.

In the present embodiment, upper layer end template b21 favours horizontally arranged, makes upper layer RPC stiffened portions b2 close to winding up Purlin one end box beam b1 is thicker, and the thickness of upper layer RPC stiffened portions b2 is gradual with increasing at a distance from the purlin box beam b1 that winds up Reduce, upper deck of bridge steel sole plate b4 is waveform configuration, and stringer b3 is fixed in the downwardly convex places upper deck of bridge steel sole plate b4, is tilted It is arranged and waveform configuration matches with the force way of bridge floor, holding for floorings is improved under conditions of ensureing using less material Beijing South Maxpower Technology Co. Ltd's power effectively reduces bridge floor weight, and stringer b3 is welded in the downwardly convex places upper deck of bridge steel sole plate b4, solve for a long time with Come that stringer b3 and concrete plate adhesion strength are inadequate to denounce.

In the present embodiment, the spacing of adjacent stringer b3 is 1.4~1.8m, upper layer RPC floorings b5 thickness is 50~ Tar sand wearing course a8 is poured on 150mm, upper layer RPC floorings b5, tar sand wearing course a8 thickness is 30~50mm, setting Tar sand wearing course a8 can protect upper layer RPC floorings b5 not direct contacted with wheel and cause to wear, reduce repairing upkeep charges With.

The lower layer bridge floor a of RPC steel truss combined double-layer bridge floors in the present embodiment is RPC steel truss groups as shown in Figure 6 to 8 Bridge floor is closed, including purlin box beam a1, purlin box beam a1 include top plate a11, two set on the lower wing plate a12 of bottom and set on both sides Block web a13, two pieces of lower parts web a13 both sides be respectively and fixedly connected with RPC stiffened portions a2, RPC stiffened portion a2 include end template a21 and The one end RPC layers of a22, end template a21 is fixed in the lower parts web a13, and the other end extends outwardly along the direction of the purlin both sides box beam a1, It is vertical solid on web a13 in the region that RPC layers of a22 are filled in end template a21, web a13 and the both sides lower wing plate a12 enclose It is connected to needle beam a3, bridge floor steel sole plate a4 is connected on needle beam a3, RPC floorings a5 have been poured on bridge floor steel sole plate a4, is used RPC layers of a22, the lower wing plate a12 of purlin box beam a1 and end template a21 combine common stress, and lower wing plate a12 can increase purlin box beam The tension and compression area of a1, and then the permitted bearing capacity of compression is substantially improved, RPC layers of a22 can effectively put more energy into lower wing plate a12, RPC bridge floor Plate a5 can improve bridge floor load-bearing anti-pressure ability, which can mitigate 30 relative to general steel-concrete architecture quality ~50%, the length for realizing the lightness of bridge floor, while can also effectively reducing purlin height, reducing two sides access bridge.

In the present embodiment, peg is evenly arranged on end template a21, web a13, lower wing plate a12 and bridge floor steel sole plate a4 The bar-mat reinforcement a7, peg a6 and bar-mat reinforcement a7 being equipped in a6, RPC layers of a22 and RPC floorings a5 for putting more energy into can be with RPC layers A22 collective effects, the stability of reinforcement structure further promote the load-bearing anti-pressure ability of bridge floor.

In the present embodiment, end template a21 favours horizontally arranged, makes RPC stiffened portions a2 close to purlin box beam a1 mono- End is thicker, and the thickness of RPC stiffened portions a2 is gradually reduced with increasing at a distance from the box beam a1 of purlin, this construction and purlin box The force way of beam a1 matches, and stress general goal is put more energy into thickness RPC stiffened portions a2, the slightly thin RPC stiffened portions a2 in the small place of stress It puts more energy into, under conditions of ensureing to put more energy into pressure-bearing effect, reduces the usage amount of RPC, reduce bridge floor weight, reduce simultaneously Cost.

In the present embodiment, the spacing of adjacent needle beam a3 is 1.4~1.8m, and RPC floorings a5 thickness is 30~50mm, Tar sand wearing course a8 is poured on RPC floorings a5, tar sand wearing course a8 thickness is 15~25mm, and setting pitch is sanded Consumption layer a8 can protect RPC floorings a5 not direct contact with wheel and cause to wear, reduction repair maintenance costs.

When carrying out construction to the RPC steel truss combined double-layer continuous bridges in the present embodiment, it is contemplated that the technique of RPC Condition requires more harshness, can be used to make the temperature control of the double-deck RPC steel truss girders by Chinese patent literature CN205501838U Wet system and Chinese patent literature CN205502652U are controlled for making the technologies such as the waveform steel mill canopy of pushing tow bilayer RPC steel truss girders It constructs, the truss pushing tow during, cancels Temporary Piers in water, hanging fish method using intelligence carries out cantilever construction, and then complete At the construction of entire RPC steel truss combined double-layer continuous bridge.

Although the utility model has been disclosed with preferred embodiment as above, it is not limited to the utility model.It is any Those skilled in the art, in the case where not departing from technical solutions of the utility model range, all using the disclosure above Technology contents many possible changes and modifications are made to technical solutions of the utility model, or be revised as the equivalent of equivalent variations Embodiment.Therefore, every content without departing from technical solutions of the utility model, according to the utility model technical spirit to above real Any simple modifications, equivalents, and modifications that example is done are applied, should all be fallen in the range of technical solutions of the utility model are protected.

Claims (10)

1. a kind of RPC steel truss combined bridge deck, including purlin box beam（a1）, the purlin box beam（a1）Including top plate（a11）, be set to The lower wing plate of bottom（a12）With two blocks of webs set on both sides（a13）, it is characterised in that：Two blocks of webs（a13）Lower part two Side has been respectively and fixedly connected with RPC stiffened portions（a2）, the RPC stiffened portions（a2）Including end template（a21）With RPC layers（a22）, the bottom Template（a21）One end is fixed in web（a13）Lower part, the other end is along purlin box beam（a1）The direction of both sides extends outwardly, described RPC layers（a22）It is filled in end template（a21）, web（a13）And lower wing plate（a12）In the region that both sides enclose, the web （a13）On be vertically connected with needle beam（a3）, the needle beam（a3）On be connected with bridge floor steel sole plate（a4）, bridge floor steel bottom Plate（a4）On poured RPC floorings（a5）.

2. RPC steel truss combined bridge deck according to claim 1, it is characterised in that：The end template（a21）, web （a13）, lower wing plate（a12）With bridge floor steel sole plate（a4）On be evenly arranged with peg（a6）, RPC layers described（a22）With RPC bridge floors Plate（a5）In be equipped with bar-mat reinforcement for putting more energy into（a7）.

3. RPC steel truss combined bridge deck according to claim 1 or 2, it is characterised in that：The end template（a21）It favours It is horizontally arranged, make the RPC stiffened portions（a2）Close to purlin box beam（a1）One end is thicker, and RPC stiffened portions（a2）Thickness Degree with purlin box beam（a1）Distance increase and be gradually reduced.

4. RPC steel truss combined bridge deck according to claim 3, it is characterised in that：The adjacent needle beam（a3）Spacing For 1.4 ~ 1.8m, the RPC floorings（a5）Thickness is 30 ~ 50mm, the RPC floorings（a5）On poured tar sand abrasion Layer（a8）, the tar sand wearing course（a8）Thickness is 15 ~ 25mm.

5. a kind of RPC steel truss combined double-layer bridge floor, including lower layer's bridge floor（a）, upper deck of bridge（b）With for load-bearing and be connected and fixed Lower layer's bridge floor（a）With upper deck of bridge（b）Steel stringers beam（c）, it is characterised in that：Lower layer's bridge floor（a）For such as right It is required that the RPC steel truss combined bridge decks described in 1, the upper deck of bridge（b）Including purlin box beam of winding up（b1）, the purlin box of winding up Beam（b1）Including the bottom plate that winds up（b11）, upper flange set on top（b12）With two blocks of case webs that wind up set on both ends （b13）, the case web that winds up（b13）Top both sides have been respectively and fixedly connected with upper layer RPC stiffened portions（b2）, the upper layer RPC puts more energy into Portion（b2）Including upper layer end template（b21）With upper layer RPC layers（b22）, the upper layer end template（b21）One end is fixed in the case that winds up Web（b13）Top, the other end are connected with upper deck of bridge steel sole plate（b4）, described upper layer RPC layers（b22）It is filled in upper layer bed die Plate（b21）, wind up case web（b13）And upper flange（b12）In the region that both sides enclose, the upper deck of bridge steel sole plate（b4） Downward vertical is connected with stringer（b3）, the upper deck of bridge steel sole plate（b4）On poured upper layer RPC floorings（b5）, described Steel stringers beam（c）Set on lower layer's bridge floor（a）Purlin box beam（a1）With the upper deck of bridge（b）Purlin box beam of winding up（b1）It Between.

6. RPC steel truss combined double-layer bridge floor according to claim 5, it is characterised in that：The upper layer end template（b21）、 Wind up case web（b13）, upper flange（b12）With upper deck of bridge steel sole plate（b4）On be evenly arranged with peg（a6）, the upper layer RPC layers（b22）With upper layer RPC floorings（b5）In be equipped with bar-mat reinforcement for putting more energy into（a7）.

7. RPC steel truss combined double-layer bridge floor according to claim 6, it is characterised in that：The upper layer end template（b21）Incline Tiltedly in horizontally arranged, make the upper layer RPC stiffened portions（b2）Close to purlin box beam of winding up（b1）One end is thicker, and upper layer RPC stiffened portions（b2）Thickness with purlin box beam of winding up（b1）Distance increase and be gradually reduced, upper deck of bridge steel bottom Plate（b4）For waveform configuration, the stringer（b3）It is fixed in upper deck of bridge steel sole plate（b4）Downwardly convex place.

8. according to claim 5 to 7 any one of them RPC steel truss combined double-layer bridge floors, it is characterised in that：It is adjacent described small vertical Beam（b3）Spacing be 1.4 ~ 1.8m, upper layer RPC floorings（b5）Thickness is 50 ~ 150mm, the upper layer RPC floorings（b5） On poured tar sand wearing course（a8）, the tar sand wearing course（a8）Thickness is 30 ~ 50mm.

9. a kind of RPC steel truss combined double-layer continuous bridge, including pile foundation（2）, bridge pier（3）, cap（4）, bearing（5）And bridge floor （1）, the pile foundation（2）It is embedded to ground end, the bridge pier（3）Set on the pile foundation（2）On, the bridge pier（3）Between hang down Directly it is equipped with straining beam（6）, the cap（4）Set on bridge pier（3）Top, the bridge floor（1）Pass through the bearing（5）With cap （4）Connection, it is characterised in that：The bridge floor（1）For RPC steel truss combined double-layer bridge floor as claimed in claim 5, the pile foundation Plinth（2）Hollow steel pipe pile is buried to bore（21）.

10. RPC steel truss combined double-layer continuous bridge according to claim 9, it is characterised in that：The upper deck of bridge（b） On be equipped with Quick motor vehicle road, lower layer's bridge floor（a）On be equipped with bus dedicated Lanes and equipment of small motor track, it is described Lower layer's bridge floor（a）Both sides be equipped with cantilever outrigger（a9）, the cantilever outrigger（a9）On be equipped with non-motorized lane, electrical salf-walking Track and pavement.