CN101215820A - Pull-resisting press-resisting component for assembly structure and manufacturing method thereof - Google Patents
Pull-resisting press-resisting component for assembly structure and manufacturing method thereof Download PDFInfo
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- CN101215820A CN101215820A CNA2008100304730A CN200810030473A CN101215820A CN 101215820 A CN101215820 A CN 101215820A CN A2008100304730 A CNA2008100304730 A CN A2008100304730A CN 200810030473 A CN200810030473 A CN 200810030473A CN 101215820 A CN101215820 A CN 101215820A
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- reinforcing rib
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- assembly structure
- tension member
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Abstract
The invention relates to a compression member and a tension member of an assembly structure and a process. The tension member comprises a slight hollow column tube which is internally provided with reinforcement along the axis direction extending from one end of the tube to the other end, wherein, the reinforcement is prestressed; the inner chamber of the tube is filled with concrete tightly wrapping the reinforcement. The compression member comprises a slight arc hollow column tubular part, wherein the inner chamber of the tubular part is filled with concrete. The invention also provides a process of making the tension member and the compression member. The tension member and the compression member have high tension and compression strength, are not easy to be damaged, tired and dropped in bearing wind load and vibration, are especially suitable for bridge assembly, and can replace cables of the prior cable-stayed bridge and lengthen the cable-stayed bridge service life.
Description
Technical field
The present invention relates to pull-resisting press-resisting component of a kind of assembly structure and preparation method thereof, particularly relate to a kind of pull-resisting press-resisting component that is applied to the bridge assembling and preparation method thereof.
Background technology
The polytype bridge of human use is crossed over brook, river, valley or the like, and hundreds of years history has been arranged.At present, the bridge that is mainly come into operation has three kinds of fundamental types---beam bridge, suspension bridge and arch bridge.Beam bridge is considered to beam bridge and freely-supported on a series of bearings.The cable that uses in the suspension bridge is in extended state, and they the bridge pier of tail end or bearing on applied pulling force.Arch formula compressed member is applied to arch bridge, and the bridge pier of extrapolation tail end.Similar other the design of arch bridge design, but compression member and tension member are to be present in the structure simultaneously.In addition, the bridge of these three kinds of fundamental types through change or comprehensively, can form different architectural designs.One of them variant is a cable stayed bridge.At present, this bridge is very popular in Japan and Europe.The crossbeam of cable stayed bridge extends between the concrete towers of setting.Frame is upright vertically upward from current bridge deck for this tower, and is used to support a collection of isolated cable.One end of cable is fixed on the tower, and an opposite end is fixed on the bridge deck, thereby has applied certain support force to bridge deck.
The cable that is applied at present in the cable stayed bridge is made up of the steel strand, covers thin protective coating on it, and has been applied in known prestressing force on the cable.It is reported, the easy fatigue failure of using of cable at present, this is to cause owing to vibration that wind and traffic loading cause.In addition, the cable that is under the gravity load is easily sagging.
In addition, in assembly structure, bridge particularly, the constructional materials major part is to select between steel and concrete.Concrete is the most cheap typical effective material, and has good compressive strength performance.On the other hand, the relative concrete of steel is expensive more, but has stronger tensile strength.Because these characteristics, concrete is typical compression member, and steel are typical tension members.Concrete shortcoming is that its tensile strength is lower, and this has illustrated that the arrangement of reinforcement member provides additional necessity to concrete, particularly steel component.Therefore, since 19 end of the centurys, armored concrete just begins to be applied to bridge and has suffered.
Another kind of method to concrete reinforcement is a stretching arrangement of reinforcement member before concrete pouring, in order that improve concrete tensile strength.Tensile force and arrangement of reinforcement member have certain correlation, and concrete component has the compressive pre-stress corresponding to the balance pulling force.The armored concrete member has the ability of the opposing pulling force of enhancing, has surpassed prestressed numerical value up to externally applied forces.Therefore, use the prestress reinforcement member and can strengthen concrete tensile strength.In any case, in the assembly structure as bridge, still be necessary considering that economic factor simultaneously, further strengthens concrete component tensile strength.
Though the existing concrete member has compressive strength preferably,, for many buildings, particularly bridge, seek to remain and be necessary than the compression member that uses concrete to have better compressive strength performance separately.
Summary of the invention
It is higher that first purpose of the present invention provides a kind of tensile strength, and indefatigability is destroyed when bearing wind load and vibration, also is difficult for sagging tension member that is used for the bridge assembly structure and preparation method thereof.
Second purpose of the present invention provides the higher compression member of a kind of compressive strength.
First purpose of the present invention is achieved through the following technical solutions: it comprises elongated hollow cylinder pipe fitting, in the described elongated hollow cylindrical tube, be axially arranged with the reinforcing rib that extends to the other end from an end of pipe fitting, and on reinforcing rib, apply prestressing force; Be perfused with the concrete that described reinforcing rib is tightly wrapped up in the tube intracavity.Because the concrete outsourcing pipe fitting in this member helps keeping the tensile force that is applied on the reinforcing rib.When the tensile force of reinforcing rib is released, tensile member will be in pressured state.
Concrete hardens in tube intracavity, can guarantee that it and tube wall, reinforcing rib have good adhesion stress.Like this, can keep the tensile stress that is applied to above the reinforcing rib.
The effect of tube wall is protection concrete and the distortion of restriction concrete lateral expansion.
Concrete in the described pipe fitting should not extend outside the pipe.
The preferred steel pipe of described pipe fitting also can be other metal tube or non-metallic pipe, for example fibre reinforced plastics (FRP) pipe; The fiber that described FRP uses can be carbon fiber, aramid fibre or glass fiber.
Described reinforcing rib can be a reinforcing bar, also can be with other metal material or the composite material muscle made of fibre reinforced plastics for example.
Second purpose of the present invention is achieved through the following technical solutions: it comprises elongated arch hollow cylinder pipe fitting, is perfused with concrete in the tube intracavity.
The present invention's concrete can be applicable to the material outsourcing of bridge construction industry by the steel outsourcing or by other.Mainly be to have utilized high-strength prestressed reinforcing rib and the body that has than high-tensile.
The tension member preparation method of the present invention's assembly structure may further comprise the steps:
(1) provide hollow moulding in advance and slender rectangular tube predetermined length, described pipe fitting constitutes the outmost part of pull-resisting press-resisting component;
(2) reinforcing rib is axial arranged in described slender rectangular tube, described reinforcing rib has the terminal that can apply reaction force, and purpose is that reinforcing rib is extended axially in described slender rectangular tube;
(3) apply the end of pulling force at described reinforcing rib;
(4) with concrete spouting in pipe fitting, reinforcing rib that will be wherein up to it all tightly coats;
(5) guarantee that concrete hardens in pipe fitting, guarantee that there is good adhesion stress it and pipe fitting inner wall and reinforcing rib;
(6) end at reinforcing rib discharges stretching force, to keep the pulling force of reinforcing rib under concrete effect; After pulling force is released, the end of excision reinforcing rib.
The present invention's tension and compression member tension compressive strength height, bear wind load and when vibration indefatigability destroy, also be difficult for saggingly, be specially adapted to the bridge assembling, more can replace the cable in the present cable stayed bridge, prolong the application life of cable stayed bridge.
Description of drawings
Fig. 1 is a front view of having used the arch bridge of tension of the present invention and compression member;
Fig. 2 is the 2-2 line cross-sectional drawing of Fig. 1;
Fig. 3 is the enlarged drawing that circle 3 circles are lived part among Fig. 1;
Fig. 4 is the 4-4 cross section enlarged drawing of Fig. 3;
Fig. 5 is the front view (wherein local for vertically analysing and observe) of the not pipe fitting of penetration concrete;
Fig. 6 is the tension member schematic diagram that is similar to Fig. 5, has represented one and has passed the cable of member pipe fitting and the pulling force applying method of cable;
Fig. 7 is the 7-7 cross-sectional drawing of Fig. 6;
Fig. 8 is the schematic diagram (but concrete has joined tube intracavity) that is similar to Fig. 6;
Fig. 9 is the schematic diagram (but concrete has been full of tube intracavity) that is similar to Fig. 8;
Figure 10 is the 10-10 cross-sectional drawing of Fig. 9;
Figure 11 is that another kind can be for the structural form cross-sectional drawing of tension member use;
Figure 12 is a partial front elevation view of having used the cable stayed bridge of tension member of the present invention;
Figure 13 is the partial enlarged drawing that circle 13 circles are lived part among Fig. 1;
Figure 14 is the partial enlarged drawing that circle 14 circles are lived part among Fig. 1.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
With reference to Fig. 1, form the tension and the compression member of arch bridge 10 and used basic principle of the present invention.The a pair of arch formula compression member 12 that has of forming bridge 10 is with a pair of elongated parallel tension member 14 that separates.Compression member 12 and tension member 14 are the non-individual bodies that are connected in series by short member.The afterbody of compression member 12 and tension member 14 is anchored in bridge pier 16.
By Fig. 1 and Fig. 3 as seen, compression member 12 couples together by coupling arrangement 18 with tension member 14.Coupling arrangement 18 has a pair of connecting piece 20, and one of them is fixed in tension member 14, and another is fixed in compression member 12.More particularly, each connecting piece 20 has a pair of arch formula carriage 22, and described carriage 22 is bound up by hinge 26.In addition, the shape of threads inner surface 28 of arch formula carriage 22 can combine with the shape of threads external surface 30 of compression member 12 and tension member 14.Arch formula carriage 22 and compression member 12 and tension member 14 outer surface are in syntople.As shown in Figure 4, flank 24 is coordinated to couple together with gusset plate 32.The lower end of gusset plate 32 has transparent hole, corresponding to flank 24 penetrable holes 34.The hole 34 of arch formula carriage 22 by protecting bolt and can penetrating, and transparent hole of the lower end of gusset plate 32 are connected with tension member 14 with compression member 12.Fixing down of bolt 36, arch formula carriage 22 can not be thrown off.Because thread inner surface 28 is connected with thread outer surface 30, axial displacement can not take place along compression member 12 and tension member 14 directions in arch formula carriage 22.
Gusset plate 32 has a pair of transparent hole, and coupling head 38 extensions penetrate this hole is connected with gusset plate 32.In particular, coupling head 38 has a pair of elongated arm of separating 40.The penetrable hole 42 of arm 40 is collocation corresponding relations with the upper end hole of gusset plate 32, and connector 44 is to penetrate this two hole and connect coupling head 38 and gusset plate 32.Connector 44 can be a latch, or other connected mode, as rivet.Connector 38 is fixed on the cable 46, and cable 46 is typical multiply cables, and has covered one deck protective material, as epoxy resin.
Arch formula carriage 22, gusset plate 32 and Connecting jont 38 are used for being connected of compression member 12 and tension member 14.Same effective and efficient manner, C type anchor clamps 48 are arranged in the penetrable hole of flank 24.The shape of the groove 50 of anchor clamps 48 is corresponding with the shape of cable.Anchor clamps 48 are rigidity, are used to clamp the arch formula carriage 22 adjacent with the thread outer surface 30 of compression member 12 and tension member 14.In use, cable 46 passes penetrable hole 34, rests on the groove 50.Linkage 18 comes to this and connects compression member 12 and tension member 14.
As shown in Figure 2, the parallel transverse member of keeping apart 52 is sprawled between tension member 14.Transverse member 52 and compression member 12 form triangle in cross section, compression member 12 links together on the top of arch.Transverse member 52 along tension member 14 be arranged in each linkage 18 near, the bindiny mechanism of tension member 14 is known technologies.What link transverse member 52 is bridge deck 54, as arch bridge 10 buy car in installments and the pedestrian transitable be surface 56.Is guardrail 58 from bridge deck 54 both sides to putting on the shelf upright.The guardrail 58 extensible scopes that exceed the arch that constitutes by compression member 12, as shown in Figure 1.Transition ramp 60 is as the changeover portion of initial current face 62 to the current face 56 of bridge deck.
In practice, tension member 14 and compression member 12 assembled lengths are littler than the total length that uses.
As shown in Figure 5, pipe fitting 64 is the ingredients that form compression member 12 and tension member 14.As Fig. 5 and shown in Figure 10, pipe fitting 64 is hollow cylindrical tube, has outer wall 66.Yet other structure of pipe fitting 64 also is to coordinate collocation.Material as pipe fitting 64 is preferably steel or fibre reinforced plastics (FRP).Obviously, in fact the outer wall 66 unnecessary thickness that abundance is arranged depend on use, and three millimeters is feasible.When forming tension member 14, reinforcing rib 68 is arranged in the inside of pipe fitting 64.Preferably, as shown in Figure 7, reinforcing rib 68 is in the center of pipe fitting 64 inner spaces.Reinforcing rib 68 can be high-strength steel reinforcing rib or FRP, and the fiber that FRP uses can be carbon fiber, aramid fibre or glass fiber.Connect reinforcing rib 68 two ends 70 be a pair of anchor clamps 72 of holding.Wherein, anchor clamps are fixed, and another anchor clamps connect tensioner, shown in the arrow of Fig. 7.Another feasible pattern is two and holds anchor clamps 72 and can connect tensioner, thereby tension force is assigned on the reinforcing rib 68.When applying pulling force on reinforcing rib 68 time by holding anchor clamps 72 and tensioner, concrete seven 4 pours into the inside of pipe fitting 64, and surrounds reinforcing rib 68, is a predetermined length up to concrete seven 4 apart from the tail end 76 of pipe fitting 64.For guaranteeing that concrete seven 4 can not exceed predetermined length, a pair of tail-hood is installed in tail end 76, extremely solidifies up to concrete seven 4 maintenances.In pipe fitting 64, the concrete seven 4 that pours into surrounds reinforcing rib 68 (referring to Figure 10), keeps stretching force on reinforcing rib 68, up to concrete curing.Reinforcing rib 68 moves axially and can suffer restraints under the influence of concrete seven 4.Therefore, by the release of reinforcing rib 68 tension force, applied compressive pre-stress in the tension member 14.Like this, tension member 14 has been concentrated these advantages, is respectively the tensile strength of prestressed concrete enhancing and the tensile strength of the enhancing that pipe fitting 64 restriction concrete sevens 4 lateral expansions cause.Therefore, reinforcing rib 68 is very important; As shown in Figure 9, it is not outstanding from the tail end 76 of pipe fitting 64.
The kind of reinforcing rib 68 and size, the material of pipe fitting 64 and the kind of pipe thickness and concrete seven 4 all are adjustable, depend primarily on the feature of tension member application target and required bearing load.This point according to known technology general knowledge, just is appreciated that.In addition, the quantity of reinforcing rib 68 and type also are adjustable.As Figure 11, present embodiment is to use 13 reinforcing ribs 68, is arranged in the pipe fitting 64.The quantity of reinforcing rib 68 depends primarily on the feature of the application target and the required bearing load of tension member.
Be applied to the compression member 12 of arch bridge 10, be similar to the constituted mode of tension member 14.Yet, in compression member 12, do not have the reinforcing rib 68 of tension force in the pipe fitting 64.Just simply concrete seven 4 is poured into the inner chamber of pipe fitting 64.The advantage that compression member 12 has is that under the constraint of tube wall, concrete has stronger compressive strength.Pipe fitting 64 can limit the lateral expansion of concrete seven 4.Pipe fitting 64 itself can not carry any axial force.Because concrete lateral expansion, at the circumferencial direction of pipe circumference stress is arranged, cause concrete lateral expansion effectively to be retrained.
As Fig. 1, Figure 13 and shown in Figure 14, compression member 12 and tension member 14 are to be strung by many short short members.Figure 13 has illustrated the mode that compression member 12 polyphones get up.As shown in figure 13, concrete seven 4 does not extend to the tail end of pipe fitting 64 fully, and ends at before the tail end 76.The tail end of each tension member 12 has been placed a rigidity insert 78.As shown in figure 13, rigidity insert 78 connects one by one that compression member 12 arrives another.There is certain distance between the tail end 76 of compression member 12.Therefore, pipe fitting 64 does not carry any axial force.Rigidity insert 78 also can replace with a kind of high-strength silicate material.The effect of rigidity insert 78 is to transmit pressure to another member from a compression member 12.
As Fig. 1 and shown in Figure 14, tension member 14 is to connect bunchiness by short member.As seen from Figure 14, for two tension members 14 are linked together, concrete seven 4 does not touch the tail end 76 of pipe fitting 64.Connector 80 is attached to the tail end 82 of reinforcing rib 68.The effect of connector 80 is connecting thread bar 84 and tail end 82.A kind of threaded rod 84 is counterclockwise screw threads, and reverse threaded rod 84 is clockwise screw threads.Reverse threaded rod 84 and turn buckle 86 link together.Turn buckle 86 can apply pulling force in reinforcing rib 68.After turn buckle 86 was installed, the pulling force of predetermined quantity was applied on the reinforcing rib 68, cement paste 88 be cast in connector 80, threaded rod 84 and turn buckle 86 around, assemble in aggregates.Therefore, compression member 12 and tension member 14 all connect into a string.
Like this, compression member 12 and tension member 14 can be used for assembly structure, as arch bridge, and according to the load characteristics of bearing, can use compression member and tension member in this kind structure more economically.Except that arch bridge, tension member 14 also can be applicable to other bridge and building structure.In cable stayed bridge 90, a kind of special purposes of tension member 14 is exactly to substitute traditional suspension cable, as shown in figure 12.In this application, the effect of tension member 14 is to hold bridge deck.Here, an end fixed bridge panel 54 of tension member 14, an opposite end is connected one of concrete towers 92 of numerous settings.Wherein, the tension member 14 of Figure 11 has multiply reinforcing rib 68, and its application is more extensive.When tension member 14 alternative traditional suspension cables were applied to cable stayed bridge, because reinforcing rib 68 has concrete protective, this can reduce reinforcing rib because the fatigue that vibration causes.In addition, tension member 14 is difficult for stress relaxation, and this phenomenon of stress relaxation is very common in present suspension cable.
Claims (10)
1. the tension member of an assembly structure, it is characterized in that, comprise elongated hollow cylinder pipe fitting, in the described elongated hollow cylindrical tube inner chamber, be axially arranged with the prestressing force reinforcing rib that extends to the other end from an end of pipe fitting, be perfused with the concrete that described reinforcing rib is tightly wrapped up in the tube intracavity.
2. the tension member of assembly structure according to claim 1 is characterized in that described elongated hollow cylindrical tube is a steel pipe.
3. the tension member of assembly structure according to claim 1 is characterized in that described elongated hollow cylindrical tube is a fibre reinforced plastic tube.
4. as the tension member of assembly structure as described in one of claim 1-3, it is characterized in that described reinforcing rib is a reinforcing bar.
5. as the tension member of assembly structure as described in one of claim 1-3, it is characterized in that the muscle of described reinforcing rib for making with composite material.
6. as the tension member of assembly structure as described in the claim 5, it is characterized in that the described muscle made from composite material is a fiber reinforced plastic rod.
7. the compression member of an assembly structure is characterized in that, comprises elongated hollow cylinder pipe fitting, in the described elongated hollow cylindrical tube inner chamber, is perfused with concrete.
8. as the compression member of assembly structure as described in the claim 7, it is characterized in that described elongated hollow cylindrical tube is a steel pipe.
9. as the compression member of assembly structure as described in the claim 7, it is characterized in that described elongated hollow cylindrical tube is a fibre reinforced plastic tube.
10. as the preparation method of the tension member of assembly structure as described in one of claim 1-6, it is characterized in that, may further comprise the steps:
(1) provide hollow moulding in advance and slender rectangular tube predetermined length, described pipe fitting constitutes the outmost part of pull-resisting press-resisting component;
(2) reinforcing rib is axial arranged in described slender rectangular tube, described reinforcing rib has the terminal that can apply reaction force, and purpose is that reinforcing rib is extended axially in described slender rectangular tube;
(3) apply the end of pulling force at described reinforcing rib;
(4) with concrete spouting in pipe fitting, reinforcing rib that will be wherein up to it all tightly coats;
(5) guarantee that concrete hardens in pipe fitting, guarantee that there is good adhesion stress it and pipe fitting inner wall and reinforcing rib;
(6) end at reinforcing rib discharges stretching force, to keep the pulling force of reinforcing rib under concrete effect; After pulling force is released, the end of excision reinforcing rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100304730A CN101215820A (en) | 2008-01-15 | 2008-01-15 | Pull-resisting press-resisting component for assembly structure and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100304730A CN101215820A (en) | 2008-01-15 | 2008-01-15 | Pull-resisting press-resisting component for assembly structure and manufacturing method thereof |
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| CN101215820A true CN101215820A (en) | 2008-07-09 |
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| CNA2008100304730A Pending CN101215820A (en) | 2008-01-15 | 2008-01-15 | Pull-resisting press-resisting component for assembly structure and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635063A (en) * | 2012-04-28 | 2012-08-15 | 西安建筑科技大学 | Post-tensioned prestressing steel pipe high-strength concrete superposition bridge pier and construction method thereof |
| CN102635064A (en) * | 2012-04-28 | 2012-08-15 | 西安建筑科技大学 | Pre-tensioned prestressing steel pipe high-strength concrete superposition bridge pier and construction method thereof |
| CN104652243A (en) * | 2014-12-24 | 2015-05-27 | 中交第二公路勘察设计研究院有限公司 | FRP tube concrete and FRP corrugated plate combined buried arch bridge and construction method thereof |
-
2008
- 2008-01-15 CN CNA2008100304730A patent/CN101215820A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635063A (en) * | 2012-04-28 | 2012-08-15 | 西安建筑科技大学 | Post-tensioned prestressing steel pipe high-strength concrete superposition bridge pier and construction method thereof |
| CN102635064A (en) * | 2012-04-28 | 2012-08-15 | 西安建筑科技大学 | Pre-tensioned prestressing steel pipe high-strength concrete superposition bridge pier and construction method thereof |
| CN104652243A (en) * | 2014-12-24 | 2015-05-27 | 中交第二公路勘察设计研究院有限公司 | FRP tube concrete and FRP corrugated plate combined buried arch bridge and construction method thereof |
| CN104652243B (en) * | 2014-12-24 | 2017-01-18 | 中交第二公路勘察设计研究院有限公司 | FRP tube concrete and FRP corrugated plate combined buried arch bridge and construction method thereof |
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Open date: 20080709 |