CN202401381U - A bridge - Google Patents
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- CN202401381U CN202401381U CN 201120284647 CN201120284647U CN202401381U CN 202401381 U CN202401381 U CN 202401381U CN 201120284647 CN201120284647 CN 201120284647 CN 201120284647 U CN201120284647 U CN 201120284647U CN 202401381 U CN202401381 U CN 202401381U
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Abstract
The utility model provides a bridge, comprising a first concrete layer (1) on the top, a second concrete layer (2) in the middle and a steel plate layer (3) at the bottom. The compression strength of the first concrete layer (1) is greater than the compression strength of the second concrete layer (2). The bright has strong bending resistance, shearing resistance, compression resistance, and fatigue resistance property.
Description
Technical field
The utility model relates to a kind of bridge.
Background technology
At present, increasing along with the vehicles, highway, railway begin by ground to aerial development; Form various day by day road surface bridge engineering now; But there are a large amount of problems in road surface bridge construction now, and for example: the bridge design load is " CR live loading ", if the mobile load coefficient is bigger than normal; The bridge security deposit can reduce greatly, and long-term operation can produce bigger negative effect to bridge security; Train and large-scale passenger traffic, goods stock load long term can aggravate the fatigue damage development of bridge construction down, influence the fatigue behaviour of bridge, shorten the application life of bridge.
Present bridge adopts concrete or steel work more.Yet there are problems such as pitted skin problem, problem, honeycomb problem, hole problem, slit and interlayer problem, truncation and the arrisdefect problem of revealing muscle, crack problem, strength deficiency in the ordinary concrete bridge; There is etching problem in steel structure bridge, and the maintenance difficulty, and upkeep cost is expensive, and in addition, steel structure bridge is inflammable, and fire safety problem has become the problem that is on the rise now.
The utility model content
The utility model is intended to overcome the problems referred to above and a kind of novel bridge is provided, and this bridge possesses bending resistance preferably, shearing resistance, resistance to compression and anti-fatigue performance.
To achieve these goals; The utility model provides a kind of bridge; This bridge comprises first layer of concrete at top, second layer of concrete of centre and the steel plate layer of bottom, and the compressive strength of said first layer of concrete is greater than the compressive strength of said second layer of concrete.
Preferably, said first layer of concrete is processed by RPC.
Preferably, the thickness of said second layer of concrete is greater than the thickness of said first layer of concrete.
Preferably, the thickness at the middle part of said bridge is greater than the thickness of the both sides of said bridge.
Preferably, the thickness at the middle part of said first layer of concrete is greater than the thickness of the both sides of said first layer of concrete.
Preferably, the thickness at the middle part of said second layer of concrete is greater than the thickness of the both sides of said second layer of concrete.
Preferably, the bottom corner of the said first layer of concrete both sides is fillet or chamfering.
Preferably, the bottom corner of the said second layer of concrete both sides is fillet or chamfering.
Preferably, said steel plate layer is a precompressed prestress steel flaggy.
Preferably, be provided with hole in said first layer of concrete and/or second layer of concrete.
Preferably, said bridge is arranged and connected to described hole along the longitudinal direction of said bridge.
Preferably, described hole is arranged on the binding site of said first layer of concrete and said second layer of concrete.
Preferably, the shape of the cross section of described hole and/or size change along the longitudinal direction of described hole.
Preferably, be provided with first reinforcing rib in the described hole, this first reinforcing rib is arranged on the sidewall of described hole along the longitudinal direction of described hole.
Preferably, be provided with second reinforcing rib of annular in the described hole, this second reinforcing rib is arranged on the sidewall of described hole along the horizontal direction of described hole.
Preferably, be connected with WELDING STUDS on the said steel plate layer, this WELDING STUDS is inserted in said second layer of concrete.
Preferably, be provided with the bending reinforcing bar in said second layer of concrete or in said first layer of concrete and second layer of concrete, at least one end of this bending reinforcing bar is connected with said WELDING STUDS.
Preferably, be provided with the 3rd reinforcing rib between said first layer of concrete and said second layer of concrete.
Preferably, be provided with the 4th reinforcing rib between said second layer of concrete and the said steel plate layer.
Preferably, the sidewall of said second layer of concrete is provided with the 5th reinforcing rib of arranging along the short transverse of said bridge.
Preferably, be provided with stirrup in said first layer of concrete and second layer of concrete, this stirrup is arranged along the short transverse of said first layer of concrete and second layer of concrete.
Preferably, be provided with prestressed reinforcement in said first layer of concrete and/or second layer of concrete, this prestressed reinforcement is arranged along the longitudinal direction of said bridge.
Preferably, the sidewall of said bridge is provided with recess.
Preferably, be embedded with suspender member on the said bridge.
Pass through technique scheme; First layer of concrete, second layer of concrete and steel plate layer are stressed jointly as a new integral body; And can bring into play the high and high advantage of steel plate layer tensile strength of the first layer of concrete compressive strength fully; Improve bending resistance, shearing resistance, resistance to compression and the anti-fatigue performance of integral bridge, thereby prolong the application life of bridge, improve the durability of bridge.
Other feature and advantage of the utility model will partly specify in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is the further understanding that is used to provide the utility model, and constitutes the part of manual, is used to explain the utility model with the following specific embodiment, but does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the structural representation of first kind of embodiment of the bridge that provides of the utility model;
Fig. 2 is the structural representation of second kind of embodiment of the bridge that provides of the utility model;
Fig. 3 is the structural representation of the third embodiment of the bridge that provides of the utility model;
Fig. 4 is the structural representation of the 4th kind of embodiment of the bridge that provides of the utility model;
Fig. 5 is the structural representation of the 5th kind of embodiment of the bridge that provides of the utility model;
Fig. 6 is the structural representation of the 6th kind of embodiment of the bridge that provides of the utility model;
Fig. 7 is the structural representation of the 7th kind of embodiment of the bridge that provides of the utility model;
Fig. 8 is the structural representation of the 8th kind of embodiment of the bridge that provides of the utility model;
Fig. 9 is the structural representation of the 9th kind of embodiment of the bridge that provides of the utility model;
Figure 10 is the structural representation of the tenth kind of embodiment of the bridge that provides of the utility model;
Figure 11 is the structural representation of the 11 kind of embodiment of the bridge that provides of the utility model;
Figure 12 is the structural representation of the 12 kind of embodiment of the bridge that provides of the utility model;
Figure 13 is the structural representation of the 13 kind of embodiment of the bridge that provides of the utility model;
Figure 14 is the structural representation of the 14 kind of embodiment of the bridge that provides of the utility model;
Figure 15 is the structural representation of the 15 kind of embodiment of the bridge that provides of the utility model;
Figure 16 is the structural representation of the 16 kind of embodiment of the bridge that provides of the utility model;
Figure 17 is the structural representation of the 17 kind of embodiment of the bridge that provides of the utility model;
Figure 18 is the structural representation of the 18 kind of embodiment of the bridge that provides of the utility model;
Figure 19 is the structural representation of the 19 kind of embodiment of the bridge that provides of the utility model;
Figure 20 is the structural representation of the 20 kind of embodiment of the bridge that provides of the utility model;
Figure 21 is the structural representation of the 21 kind of embodiment of the bridge that provides of the utility model.
Description of reference numerals
1: the first layer of concrete; 2: the second layer of concrete; 3: the steel plate layer; 4: hole; 5: WELDING STUDS; 6: the first reinforcing ribs; 7: the second reinforcing ribs; 8: the bending reinforcing bar; 9: the three reinforcing ribs; 10: the four reinforcing ribs; 11: the five reinforcing ribs; 12: stirrup; 13: prestressed reinforcement; 14: groove; 15: pit; 16: suspender member; 17: transverse reinforcement.
The specific embodiment
Be elaborated below in conjunction with the specific embodiment of accompanying drawing to the utility model.Should be understood that the specific embodiment described herein only is used for explanation and explains the utility model, is not limited to the utility model.
In the utility model, under the situation of not doing opposite explanation, the situation the when noun of locality of use is the bridge that provides at the utility model and normally uses like " top, centre, bottom, short transverse, longitudinal direction " is undefined.
Fig. 1 to Figure 21 has shown 21 kinds of embodiments of the bridge that the utility model provides.Extremely shown in Figure 21 like Fig. 1; The utility model provides a kind of bridge; This bridge comprises first layer of concrete 1 at top, middle second layer of concrete 2 and the steel plate layer 3 of bottom, and the compressive strength of said first layer of concrete 1 is greater than the compressive strength of said second layer of concrete 2.
Pass through technique scheme; First layer of concrete 1, second layer of concrete 2 and steel plate layer 3 are stressed jointly as a new integral body; And can bring into play the high and high advantage of steel plate layer 3 tensile strength of first layer of concrete, 1 compressive strength fully; Improve bending resistance, shearing resistance, resistance to compression and the anti-fatigue performance of integral bridge, thereby prolong the application life of bridge, improve the durability of bridge.
Said first layer of concrete 1 selects the higher concrete of compressive strength rate to process, and for example, said first layer of concrete 1 can be processed by RPC (RPC concrete).The RPC concrete has mechanical property, intensity, toughness and durability preferably.In addition, RPC is a kind of environment-friendly materials, under the equal bearing capacity condition cement consumption of RPC material still less, the discharge value of the CO2 in the manufacturing process still less, for the consumption of aggregate also still less.Therefore, the RPC concrete integrates intensity, toughness, resists advantages such as fiery, anticorrosive, is excellent bridge surface layer structure, can improve the ability of anti-live load effectively, improves the fatigue resistance of bridge.
Said second layer of concrete 2 can adopt common concrete to process, and for example, second layer of concrete 2 can adopt C60, C70 or C80 steel concrete to process.Above-mentioned concrete can enough conventional materials and explained hereafter, has the desired each item mechanical property of concrete structure and has the concrete of high-durability, high workability and high volume stability.And above-mentioned concrete also has good operation property and higher-strength.
Said first layer of concrete 1 and second layer of concrete 2 can be in-situ layer or preformed layer; Perhaps first layer of concrete 1 is a preformed layer, and second layer of concrete 2 is an in-situ layer; Perhaps first layer of concrete 1 is an in-situ layer, and second layer of concrete 2 is a preformed layer.Can stick to one through adhesive glue between first layer of concrete 1 and second layer of concrete 2.In addition, first layer of concrete 1, second layer of concrete 2 and steel plate layer 3 can be preformed layer, stick to one through adhesive glue each other.
To shown in Figure 21, in order to reduce the consumption of first layer of concrete 1, and then practice thrift cost like Fig. 1, preferably, the thickness of said second layer of concrete 2 is greater than the thickness of said first layer of concrete 1.In embodiment shown in Figure 1, the thickness of second layer of concrete 2 is greater than the thickness of first layer of concrete 1, and the thickness of first layer of concrete 1 is greater than the thickness of steel plate layer 3.
Preferably, the thickness at the middle part of said bridge is greater than the thickness of the both sides of said bridge.Like this, can reduce concrete amount at the less position of load, thus the purpose that reaches economical with materials, reduces cost; And increase the thickness of superimposed bridge at the bigger position of load, thus the intensity of bridge increased, and then the application life of improving bridge.
Like Fig. 1 and shown in Figure 19, according to a kind of embodiment of the utility model, the thickness at the middle part of said first layer of concrete 1 is greater than the thickness of the both sides of said first layer of concrete 1.In embodiment shown in Figure 1; The width of first layer of concrete 1 is greater than the width of second layer of concrete 2; And the bottom corner of the both sides of first layer of concrete 1 has carried out chamfered, like this, can reduce material usage at the less rotation angle position of load; Thereby the purpose that reach economical with materials, reduces cost, and make simple, be convenient in demoulding.In embodiment shown in Figure 19; The width of first layer of concrete 1 is greater than the width of second layer of concrete 2; And the bottom corner of the both sides of first layer of concrete 1 is set to arc-shaped transition, like this, can reduce material usage at the less rotation angle position of load; Thereby the purpose that reach economical with materials, reduces cost, and make simple, be convenient in demoulding.
Like Fig. 2, Figure 13 and shown in Figure 19, according to the another kind of embodiment of the utility model, the thickness at the middle part of said second layer of concrete 2 is greater than the thickness of the both sides of said second layer of concrete 2.In Fig. 2 and embodiment shown in Figure 19; The bottom corner of the both sides of second layer of concrete 2 has carried out chamfered, like this, can reduce material usage at the less rotation angle position of load; Thereby the purpose that reach economical with materials, reduces cost, and make simple, be convenient in demoulding.In embodiment shown in Figure 13; The bottom corner of the both sides of second layer of concrete 2 is set to arc-shaped transition, like this, can reduce material usage at the less rotation angle position of load; Thereby the purpose that reach economical with materials, reduces cost, and make simple, be convenient in demoulding.
In addition, can suitably handle, so that first layer of concrete 1 smoothly contacts with second layer of concrete 2 binding site of first layer of concrete 1 and second layer of concrete 2.For example, in embodiment shown in Figure 21, the top corner of the both sides of second layer of concrete 2 is set to arc-shaped transition, and in the bottom of first layer of concrete 1 arc-shaped recess is set accordingly, and first layer of concrete 1 is cooperated with second layer of concrete 2 smoothly.
The confined concrete sex change effectively of said steel plate layer 3; Thereby can improve the rigidity and the cracking resistance of integral bridge effectively; Make whole stressed even; Can the phenomenon that stress is concentrated not occur, thereby prolong the application life of bridge, improve the durability of bridge at first layer of concrete 1 and second layer of concrete 2.Said steel plate layer 3 can be the general steel plate layer, also can be precompressed prestress steel flaggy.Preferably, said steel plate layer 3 is precompressed prestress steel flaggy.Like this, can improve the rigidity of steel plate layer 3 effectively, postpone the time that the crack occurs; Increase the durability of steel plate layer 3; Improve the elastic strength that receives the drawing-die piece, make the resistance of steel plate layer 3 stronger, thereby promote the integrally-built intensity of bridge, rigidity, bending resistance, shearing resistance and fatigue resistance.
Said steel plate layer 3 can also can have certain moulding for a smooth steel plate.For example, in embodiment shown in Figure 1, steel plate layer 3 is a smooth steel plate, and in embodiment shown in Figure 17, the upwards bending of the both sides of steel plate layer 3 is to wrap up second layer of concrete 2.
Preferably, be provided with hole 4 in said first layer of concrete 1 and/or second layer of concrete 2.Like this, can alleviate bridge weight effectively, reduce concrete consumption; And can reach the effect that subtracts the sound noise reduction, the heat of hydration that behind the fluid concrete plate, can avoid the bridge inner concrete is excessive and can't discharge, and prevents concrete cracking; Keep the bridge internal-external temperature difference as far as possible little in the while use afterwards; Thereby play the effect that prevents concrete cracking, and can prevent the corrosion of bridge effectively, guarantee the total quality of bridge; And can play the effect of obstruct to the live load of bridge floor, improve the fatigue resistance of bridge.Hole 4 can have multiple arrangement, and for example, hole 4 can connect said bridge and arrange, also can not connect said bridge and arrange.Be provided with for ease, preferably, said bridge is arranged and connected to hole 4 along the longitudinal direction of said bridge.
The position is set selects according to the working design needs of hole 4.As shown in Figure 1, according to a kind of embodiment of the utility model, described hole 4 is arranged in said second layer of concrete 2.As shown in Figure 2, according to the another kind of embodiment of the utility model, described hole 4 is arranged on the binding site of said first layer of concrete 1 and said second layer of concrete 2.
The shape of the cross section of hole 4 and/or size can remain unchanged on the longitudinal direction of hole 4, also can change along the longitudinal direction of hole 4.Like Fig. 3 and shown in Figure 4, according to a kind of embodiment of the utility model, the shape of the cross section of described hole 4 and/or size change along the longitudinal direction of described hole 4.Like this, can come reasonably to select the shape of cross section and the size of hole 4 according to the thickness of working design needs, layer of concrete and width and bridge shape of cross section.In addition, the shape of the cross section of described hole 4 and/or size can be selected along the longitudinal direction gradual change or the sudden change of described hole 4 as required.
In order to improve the bulk strength of bridge, preferably, be provided with first reinforcing rib 6 in the described hole 4, this first reinforcing rib 6 is arranged on the sidewall of described hole 4 along the longitudinal direction of described hole 4.As shown in Figure 5; The binding site of said first layer of concrete 1 and second layer of concrete 2 is provided with vertical perforation hole 4; The cross sectional shape of hole 4 is a rectangle; Be provided with first reinforcing rib of arranging along the longitudinal direction of hole 46 in the hole 4, the bottom of attending of rectangle hole 4 is respectively arranged with a reinforcing rib, and right sides is respectively arranged with three reinforcing ribs.First reinforcing rib 6 can the integrally formed or split setting with the sidewall of hole 4.
In order to improve the bulk strength of bridge, preferably, be provided with second reinforcing rib 7 of annular in the described hole 4, this second reinforcing rib 7 is arranged on the sidewall of described hole 4 along the horizontal direction of described hole 4.As shown in Figure 6; The binding site of said first layer of concrete 1 and second layer of concrete 2 is provided with vertical perforation hole 4; The cross sectional shape of hole 4 is the arc angle rectangle; Be provided with second reinforcing rib 7 of annular in the hole 4, this second reinforcing rib 7 is arranged on the sidewall of described hole 4 along the horizontal direction of described hole 4.Second reinforcing rib 7 can the integrally formed or split setting with the sidewall of hole 4.
Described hole 4 can be selected according to the working design needs for a row, two rows or many rows.The quantity in every round hole 4 also can be selected according to the working design needs.For example, in embodiment shown in Figure 1, hole 4 is a row.And in embodiment shown in Figure 16, hole 4 is two rows, hole 4 alignment up and down, and as selection, hole 4 also can be staggeredly arranged up and down.
Shape of cross section to hole 4 does not have special qualification, and for example, the shape of cross section of hole 4 can be circle or polygon.In embodiment shown in Figure 1, the shape of cross section of hole 4 is a rectangle.In embodiment shown in Figure 17, the shape of cross section of hole 4 is the arc angle rectangle.
The cross-sectional area in same round hole 4 can be identical, also can be inequality.In embodiment shown in Figure 1, the cross-sectional area in same round hole 4 is identical, and in embodiment shown in Figure 21, the cross-sectional area in same round hole 4 is then inequality.
In addition, hole 4 can equidistantly be arranged, also can non-equidistant arranging, select according to concrete working design needs.For example, in embodiment shown in Figure 17, be provided with 5 holes 4, these 5 holes 4 are arranged in second layer of concrete, 2 moderate distance.In embodiment shown in Figure 20, in second layer of concrete 2, be provided with 7 holes 4, these 7 holes 4 from the centre to both sides by loose to closely arranging.
To shown in Figure 21, preferably, be connected with WELDING STUDS 5 on the said steel plate layer 3 like Fig. 1, this WELDING STUDS 5 is inserted in said second layer of concrete 2.Second layer of concrete 2 moulding by casting on steel plate layer 3, concrete wraps up the WELDING STUDS 5 on the steel plate layer 3 fully.Like this, not only can guarantee that second layer of concrete 2 is stressed jointly as a new integral body with steel plate layer 3, and can bring into play the intensity of steel plate layer 3 fully; Improve bending resistance, shearing resistance and the compressive property of integral bridge, and can seal the crack at glued position, confined concrete sex change effectively; Thereby can improve the rigidity and the cracking resistance of integral bridge effectively; Make whole stressedly evenly can the phenomenon that stress is concentrated not occur, can make the bearing capacity of bridge higher, fatigue resistance is higher at second layer of concrete 2; And can prevent bridge bottom cracking effectively, improve the tensile strength and the shear strength of bridge bottom.
As shown in Figure 7, according to a kind of embodiment of the utility model, WELDING STUDS 5 is evenly distributed on hole 4 belows.Like this, WELDING STUDS 5 can bear shearing and uplift force, the concrete of hole 4 belows is played the effect of support, reinforcement and power transmission; Can the load around the hole 4 be distributed on the steel plate layer 3 as early as possible; Make bridge more firm, thereby guarantee the quality of bridge, prolong the application life of bridge.
As shown in Figure 8, according to the another kind of embodiment of the utility model, WELDING STUDS 5 is evenly distributed between the adjacent hole 4.Like this; WELDING STUDS 5 can bear shearing and uplift force; Can be used as the reinforcement of vertical concrete rod or plate, and can upper load be delivered on the bottom steel flaggy 3 equably, form the overall coordination stress system; Can bring into play the intensity of steel plate layer 3 fully, improve bending resistance, shearing resistance and the compressive property of integral bridge.
As shown in Figure 9, according to another embodiment of the utility model, WELDING STUDS 5 is evenly distributed on the steel plate layer 3.Like this; WELDING STUDS 5 can bear shearing and uplift force, can be used as the reinforcement of second layer of concrete 2, and second layer of concrete 2 is enhanced; And can upper load be delivered on the bottom steel flaggy 3 equably; Form the overall coordination stress system, can bring into play the intensity of steel plate layer 3 fully, improve bending resistance, shearing resistance and the compressive property of integral bridge.
Said WELDING STUDS 5 can be upright, also can stand upside down.In embodiment shown in Figure 1, WELDING STUDS 5 is in upright state.In embodiment shown in Figure 4, WELDING STUDS 5 is in the state of handstand.In addition, can be that the end of WELDING STUDS 5 is connected with steel plate layer 3, as depicted in figs. 1 and 2.As selection, also can be that WELDING STUDS 5 penetrates steel plate layer 3 or inserts the inside of steel plate layer 3 and be connected with steel plate layer 3, like Fig. 4 and shown in Figure 13.
Preferably, be provided with bending reinforcing bar 8 in said second layer of concrete 2 or in said first layer of concrete 1 and second layer of concrete 2, at least one end of this bending reinforcing bar 8 is connected with said WELDING STUDS 5.Like this, can improve the globality of bridge, improve intensity, rigidity and the power transmission ability of integral bridge, pass as for the live load decomposition of bridge floor future effectively, thereby improve the fatigue resistance of bridge effectively.
Like Fig. 3 and shown in Figure 10, according to a kind of embodiment of the utility model, said bending reinforcing bar 8 is arranged in said second layer of concrete 2, and an end of said bending reinforcing bar 8 is connected with said WELDING STUDS 5.According to the another kind of embodiment of the utility model, said bending reinforcing bar 8 is arranged in said first layer of concrete 1 and second layer of concrete 2, and an end of said bending reinforcing bar 8 is connected with said WELDING STUDS 5.Particularly; In embodiment shown in Figure 3; The two ends of bending reinforcing bar 8 all form kink; The kink of one end is connected with WELDING STUDS 5, is being provided with bending reinforcing bar 8 below the hole 4 and between the adjacent hole 4, and the other end of the bending reinforcing bar 8 between the adjacent hole 4 extend in first layer of concrete 1.In embodiment shown in Figure 10; One end of bending reinforcing bar 8 forms kink; This kink is connected with WELDING STUDS 5, is being provided with bending reinforcing bar 8 below the hole 4 and between the adjacent hole 4, and the other end of the bending reinforcing bar 8 between the adjacent hole 4 extend in first layer of concrete 1.Said bending reinforcing bar 8 adopts the mode of welding to be connected with WELDING STUDS 5 usually.
Preferably, be provided with the 3rd reinforcing rib 9 between said first layer of concrete 1 and said second layer of concrete 2.Like this; Contact surface between first layer of concrete 1 and second layer of concrete 2 is strengthened, and can enlarge both contacts area effectively, can make both bond more firmly; Globality is better, intensity is higher, can prevent effectively that contact surface from producing the crack.
The 3rd reinforcing rib 9 can adopt integrally formed mode to form with first layer of concrete 1 or adopt integrally formed mode to form with second layer of concrete 2.In addition; The 3rd reinforcing rib 9 also can with first layer of concrete 1 and the 2 split settings of second layer of concrete; It is simpler that split production can make prefabricated component make; And the position of the 3rd reinforcing rib 9 can be set neatly, help the 3rd reinforcing rib 9 being set at the local location of first layer of concrete 1 and second layer of concrete 2.In embodiment shown in Figure 11, along the longitudinal direction of bridge be provided with the 3rd reinforcing rib 9, the three reinforcing ribs 9 and first layer of concrete 1 integrally formed.In embodiment shown in Figure 12, along the longitudinal direction of bridge be provided with the 3rd reinforcing rib 9, the three reinforcing ribs 9 and second layer of concrete 2 integrally formed.In embodiment shown in Figure 14; Longitudinal direction along bridge is provided with the 3rd reinforcing rib 9; The 3rd reinforcing rib 9 and first layer of concrete 1 and the 2 split settings of second layer of concrete, the top and the bottom of the 3rd reinforcing rib 9 are embedded in respectively in first layer of concrete 1 and second layer of concrete 2.
Preferably, be provided with the 4th reinforcing rib 10 between said second layer of concrete 2 and the said steel plate layer 3.Like this; Contact surface between second layer of concrete 2 and the steel plate layer 3 is strengthened, and can enlarge both contacts area effectively, can make both bond more firmly; Globality is better, intensity is higher, can prevent effectively that contact surface from producing the crack.
The 4th reinforcing rib 10 can adopt integrally formed mode to form with steel plate layer 3 or adopt integrally formed mode to form with second layer of concrete 2.In addition; The 4th reinforcing rib 10 also can with steel plate layer 3 and the 2 split settings of second layer of concrete; It is simpler that split production can make prefabricated component make; And the position of the 4th reinforcing rib 10 can be set neatly, help the 4th reinforcing rib 10 being set at the local location of the steel plate layer 3 and second layer of concrete 2.
As shown in Figure 3; Be provided with the 4th reinforcing rib 10 between second layer of concrete 2 and the bottom steel flaggy 3; The 4th reinforcing rib 10 and second layer of concrete 2 are the split setting with bottom steel flaggy 3; The 4th reinforcing rib 10 tops are embedded in the bottom of second layer of concrete 2, and the bottom is embedded in the groove of bottom steel plate 3, and the 4th reinforcing rib 10 connects pontic and vertical with the longitudinal axis of pontic.As shown in Figure 9; Be provided with the 4th reinforcing rib 10 between second layer of concrete 2 and the bottom steel flaggy 3; It is whole and be embedded in the groove of bottom steel flaggy 3 that the 4th reinforcing rib 10 and second layer of concrete 2 are one of the forming, and the 4th reinforcing rib 10 connects pontics and vertical with the longitudinal axis of pontic.Shown in figure 14, be provided with 10 one-tenth " well " fonts of the 4th reinforcing rib 10, the four reinforcing ribs rack between second layer of concrete 2 and the bottom steel flaggy 3 and be arranged on the bottom steel flaggy 3, the 4th reinforcing rib 10 is embedded in the bottom of second layer of concrete 2.
Shown in figure 15, preferably, the sidewall of said second layer of concrete 2 is provided with the 5th reinforcing rib 11, the five reinforcing ribs 11 arranged along the short transverse of said bridge can be for a plurality of, and the layout that is parallel to each other.Like this, can carry out the part along the short transverse of bridge and strengthen, can improve the strength and stiffness of integral bridge effectively, improve the globality of bridge.
As shown in Figure 1, in order to improve the strength and stiffness of integral bridge effectively, preferably, be provided with stirrup 12 in said first layer of concrete 1 and second layer of concrete 2, this stirrup 12 is arranged along the short transverse of said first layer of concrete 1 and second layer of concrete 2.As shown in Figure 1, stirrup 12 is arranged alternately with hole 4 in first layer of concrete 1 and second layer of concrete 2, and intersects with first layer of concrete, the 1 interior transverse reinforcement that is provided with 17.
In order to improve the strength and stiffness of integral bridge effectively, preferably, be provided with prestressed reinforcement 13 in said first layer of concrete 1 and/or second layer of concrete 2, this prestressed reinforcement 13 is arranged along the longitudinal direction of said bridge.In embodiment shown in Figure 1, be provided with one group of prestressed reinforcement 13 in first layer of concrete 1, be provided with one group of prestressed reinforcement 13 around the WELDING STUDS 5.In addition, also have one group of prestressed reinforcement 13 below hole 4, to be arranged alternately with hole 4.In embodiment shown in Figure 16, around WELDING STUDS 5, be provided with one group of prestressed reinforcement 13, also have one group of prestressed reinforcement 13 below hole 4, to be arranged alternately, and in first layer of concrete 1, prestressed reinforcement 13 is not set with hole 4.In embodiment shown in Figure 17, only above WELDING STUDS 5, be provided with one group of prestressed reinforcement 13 accordingly.
Shown in figure 18, according to a kind of preferred implementation of the utility model, the sidewall of said bridge is provided with recess, and this recess can be groove 14 or pit 15.Like this, can make things convenient for the splicing between the bridge, and can make things convenient for the draining of pontic, thereby the pontic of avoiding ponding to bring destroys, and can conveniently lay pipeline.In embodiment shown in Figure 180, the sidewall that the sidewall of second layer of concrete 2 is provided with groove 14, the first layer of concrete 1 is provided with pit 15.The set-up mode of groove 14 and pit 15 is selected according to concrete needs.
The integral manufacturing of bridge, maintenance and lifting for ease preferably, is embedded with suspender member 16 on the said bridge.Suspender member 16 can be arranged on the appropriate location of bridge, and is shown in figure 18, and suspender member 16 is arranged in the pit 15.
Said first reinforcing rib 6, second reinforcing rib 7, the 3rd reinforcing rib 9, the 4th reinforcing rib 10 and the 5th reinforcing rib 11 can be common reinforcing bar, as long as can play the effect of strengthening bridge.
As known in those skilled in the art, can be provided with common reinforcing bar in first layer of concrete 1 and second layer of concrete 2, to strengthen the overall performance of bridge.
In sum, the utility model provides a kind of heavily loaded bridge, and this bridge has characteristics such as vertical rigidity is big, intensity is high, crack resistance is good, partial pressing is strong, span is big, and makes simple, easy for installation.
The utlity model has purposes widely, go for different kinds of railways, highway bridge, be specially adapted to various Very Low Clearances road surface bridge.
More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But; The utility model is not limited to the detail in the above-mentioned embodiment; In the technical conceive scope of the utility model, can carry out multiple simple variant to the technical scheme of the utility model, these simple variant all belong to the protection domain of the utility model.
Need to prove that in addition each the concrete technical characterictic described in the above-mentioned specific embodiment under reconcilable situation, can make up through any suitable manner.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between the various embodiment of the utility model, as long as its thought without prejudice to the utility model, it should be regarded as content disclosed in the utility model equally.
Claims (24)
1. a bridge is characterized in that, this bridge comprises first layer of concrete (1) at top, second layer of concrete (2) of centre and the steel plate layer (3) of bottom, and the compressive strength of said first layer of concrete (1) is greater than the compressive strength of said second layer of concrete (2).
2. bridge according to claim 1 is characterized in that, said first layer of concrete (1) is processed by RPC.
3. bridge according to claim 1 is characterized in that, the thickness of said second layer of concrete (2) is greater than the thickness of said first layer of concrete (1).
4. bridge according to claim 1 is characterized in that the thickness at the middle part of said bridge is greater than the thickness of the both sides of said bridge.
5. bridge according to claim 4 is characterized in that, the thickness at the middle part of said first layer of concrete (1) is greater than the thickness of the both sides of said first layer of concrete (1).
6. bridge according to claim 4 is characterized in that, the thickness at the middle part of said second layer of concrete (2) is greater than the thickness of the both sides of said second layer of concrete (2).
7. bridge according to claim 1 is characterized in that, the bottom corner of said first layer of concrete (1) both sides is fillet or chamfering.
8. bridge according to claim 1 is characterized in that, the bottom corner of said second layer of concrete (2) both sides is fillet or chamfering.
9. bridge according to claim 1 is characterized in that, said steel plate layer (3) is a precompressed prestress steel flaggy.
10. bridge according to claim 1 is characterized in that, is provided with hole (4) in said first layer of concrete (1) and/or second layer of concrete (2).
11. bridge according to claim 10 is characterized in that, said bridge is arranged and connected to described hole (4) along the longitudinal direction of said bridge.
12. bridge according to claim 11 is characterized in that, described hole (4) is arranged on the binding site of said first layer of concrete (1) and said second layer of concrete (2).
13. bridge according to claim 11 is characterized in that, the shape of the cross section of described hole (4) and/or size change along the longitudinal direction of described hole (4).
14. bridge according to claim 11 is characterized in that, is provided with first reinforcing rib (6) in the described hole (4), this first reinforcing rib (6) is arranged on the sidewall of described hole (4) along the longitudinal direction of described hole (4).
15. bridge according to claim 11 is characterized in that, is provided with second reinforcing rib (7) of annular in the described hole (4), this second reinforcing rib (7) is arranged on the sidewall of described hole (4) along the horizontal direction of described hole (4).
16. bridge according to claim 1 is characterized in that, is connected with WELDING STUDS (5) on the said steel plate layer (3), this WELDING STUDS (5) is inserted in said second layer of concrete (2).
17. bridge according to claim 16; It is characterized in that; Be provided with bending reinforcing bar (8) in said second layer of concrete (2) or in said first layer of concrete (1) and second layer of concrete (2), at least one end of this bending reinforcing bar (8) is connected with said WELDING STUDS (5).
18. bridge according to claim 1 is characterized in that, is provided with the 3rd reinforcing rib (9) between said first layer of concrete (1) and said second layer of concrete (2).
19. bridge according to claim 1 is characterized in that, is provided with the 4th reinforcing rib (10) between said second layer of concrete (2) and the said steel plate layer (3).
20. bridge according to claim 1 is characterized in that, the sidewall of said second layer of concrete (2) is provided with the 5th reinforcing rib of arranging along the short transverse of said bridge (11).
21. bridge according to claim 1 is characterized in that, is provided with stirrup (12) in said first layer of concrete (1) and second layer of concrete (2), this stirrup (12) is arranged along the short transverse of said first layer of concrete (1) and second layer of concrete (2).
22. bridge according to claim 1 is characterized in that, is provided with prestressed reinforcement (13) in said first layer of concrete (1) and/or second layer of concrete (2), this prestressed reinforcement (13) is arranged along the longitudinal direction of said bridge.
23. bridge according to claim 1 is characterized in that, the sidewall of said bridge is provided with recess.
24. bridge according to claim 1 is characterized in that, is embedded with suspender member (16) on the said bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120284647 CN202401381U (en) | 2011-08-05 | 2011-08-05 | A bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120284647 CN202401381U (en) | 2011-08-05 | 2011-08-05 | A bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202401381U true CN202401381U (en) | 2012-08-29 |
Family
ID=46699035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120284647 Expired - Lifetime CN202401381U (en) | 2011-08-05 | 2011-08-05 | A bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202401381U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359057A (en) * | 2011-08-05 | 2012-02-22 | 中国神华能源股份有限公司 | Bridge |
| CN105421220A (en) * | 2015-12-18 | 2016-03-23 | 广东冠粤路桥有限公司 | RPC leveling board, T type beam and construction method for RPC leveling board and T type beam |
-
2011
- 2011-08-05 CN CN 201120284647 patent/CN202401381U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359057A (en) * | 2011-08-05 | 2012-02-22 | 中国神华能源股份有限公司 | Bridge |
| CN102359057B (en) * | 2011-08-05 | 2014-10-29 | 中国神华能源股份有限公司 | Bridge |
| CN105421220A (en) * | 2015-12-18 | 2016-03-23 | 广东冠粤路桥有限公司 | RPC leveling board, T type beam and construction method for RPC leveling board and T type beam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120829 |