CN101205724B - Prefabricated concrete box culvert using grouting method and bidirectional anchoring system as well as mounting structure and method thereof - Google Patents
Prefabricated concrete box culvert using grouting method and bidirectional anchoring system as well as mounting structure and method thereof Download PDFInfo
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- CN101205724B CN101205724B CN2006101689873A CN200610168987A CN101205724B CN 101205724 B CN101205724 B CN 101205724B CN 2006101689873 A CN2006101689873 A CN 2006101689873A CN 200610168987 A CN200610168987 A CN 200610168987A CN 101205724 B CN101205724 B CN 101205724B
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Abstract
The invention discloses a pre-fabricated concrete box culvert, the assembly structure thereof and an assembly method. The invention can ensure that the mortar is completely filled on a connecting surface of the pre-fabricated concrete box culvert, thereby furthest reducing the pre-stress damage caused by the sliding when the reinforcing steel bar is fixed, and allowing the pre-fabricated concrete box culvert to be assembled into a structure with extremely strong adhesion force, firmness and reliability, furthest reducing the loss of the bundled reinforcing steel bars and avoiding the damage to the structure.
Description
Technical field
Relate generally to concrete box culvert of the present invention, the assembly structure of prefabricated concrete box culvert and assembly method thereof.More specifically, the present invention relates to by to the space filling mortar of coupling part with use the tendon that provides in the bidirectional anchoring device stretch-draw box culvert to make a prefabricated concrete box culvert and another prefabricated concrete box culvert securely, couple together continuously.The invention still further relates to the structure and the method for continuous assembling prefabricated concrete box culvert.
Background technology
Precast concrete box culvert (hereinafter to be referred as prefabricated concrete box culvert) assembles by this way, be about to prefabricated concrete box culvert and vertically arrange continuously, and then the face that connects couples together.When the assembling prefabricated concrete box culvert, it is essential its each joint face is assembled up firm, solidly.
The formed recess of joint face that slurry placement to two box culvert is relative can couple together prefabricated concrete box culvert.To recess filling mortar the time, can not load onto a watertight band at the mortar inlet, because the mortar inlet all is formed on the top part of prefabricated concrete box culvert.Therefore, in this structure, can not obtain out of this world watertight effect in the coupling part of prefabricated concrete box culvert.In addition, because gravity also can run off downwards along recess by the mortar of inlet to the recess filling, perhaps this can produce recess can not be fully by the problem of slurry placement.Particularly the air of recess can not emptying, and therefore, recess also just can not be with the complete filling of mortar.So, be difficult to sheerly, be connected with each other two prefabricated concrete box culverts watertight.
Meanwhile, assembling also provides prestressing tendon during prefabricated concrete box culvert, and one-way reinforcement bundle anchor device is used for placement, stretch-draw and fixing tendon.But the length of tendon but has only 2-4 rice, and when using one-way reinforcement bundle anchor device, at fixing tendon and fixedly during the creep in stage, owing to the slip of tendon, the prestressing force of tendon can reduce widely.
In addition, when using unidirectional anchor device, the concrete pile (blockout) that box culvert is used for fixing tendon is positioned on the inner wall surface of prefabricated concrete box culvert, thereby causes the reinforcement bar of arrangement to cut away, and causes water to leak out from stake.In addition, when using one-way reinforcement bundle anchor device, because tendon cuts in the middle of the prefabricated concrete box culvert wall, the reinforcing bar material unaccounted-for (MUF) is bigger.
Summary of the invention
At the above-mentioned deficiency of prior art, purpose of the present invention promptly is the technical problem that solves its existence.The first provides a kind of prefabricated concrete box culvert; Its two assembly structure that provides this prefabricated concrete box culvert; Its three method that a plurality of prefabricated concrete box culverts of a kind of continuous assembling are provided.
In order one of to solve the problems of the technologies described above, the prefabricated concrete box culvert that a kind of box shape provided by the invention constitutes, that a plurality of box culverts of energy are linked and packed continuously, provide recessed mortar recess on the joint face of described prefabricated concrete box culvert, so as prefabricated concrete box culvert when interconnecting mortar can be filled in the space of this generation; Article one, the watertight band that can prevent seepage is attached to around the described mortar recess; Described mortar recess provides the crucial recess of shearing, and the recessed degree of described crucial shearing recess is recessed darker than described mortar recess; Another joint face of described prefabricated concrete box culvert provides the shearing wedge of shearing recess corresponding to key; When two described prefabricated concrete box culverts interconnected, described mortar recess and the described crucial space filling of shearing recess formation mortar; The lower plate of described prefabricated concrete box culvert and upper plate provide a mortar and pour into pipe and a stack, and described mortar pours into pipe and described stack has relation with the described crucial inner surface of shearing recess respectively; The exhaust component that described mortar pours into the grouting parts of pipe and described stack is exposed to the inner passage of described prefabricated concrete box culvert.
In order one of to solve the problems of the technologies described above, the assembly structure of the prefabricated concrete box culvert that a kind of box shape provided by the invention constitutes, that a plurality of box culverts of energy are linked and packed continuously, a joint face of described prefabricated concrete box culvert provides recessed mortar recess, so as prefabricated concrete box culvert when interconnecting mortar can be filled in the space of this generation; Article one, the watertight band that can prevent seepage is attached to around the described mortar recess; Described mortar recess provides the crucial recess of shearing, and the recessed degree of described crucial shearing recess is recessed darker than described mortar recess; Another joint face of described prefabricated concrete box culvert provides the shearing wedge of shearing recess corresponding to key; When two described prefabricated concrete box culverts interconnected, described mortar recess and the described crucial space filling of shearing recess formation mortar; The lower plate of described prefabricated concrete box culvert and upper plate provide a mortar and pour into pipe and a stack, and described mortar pours into pipe and described stack has relation with the described crucial inner surface of shearing recess respectively; The exhaust component that described mortar pours into the grouting parts of pipe and described stack is exposed to the inner passage of described prefabricated concrete box culvert; When two prefabricated concrete box culverts interconnect when pouring into the described mortar of pipe perfusion by described mortar, air is from described emission by exhaust pipe, described mortar recess of described slurry placement and the described crucial space that recess generates of shearing, thus a firm adhesion provided for link.
For solve the problems of the technologies described above three, the method of a plurality of box shape prefabricated concrete box culverts of a kind of continuous assembling provided by the invention, a joint face of described prefabricated concrete box culvert provides recessed mortar recess, so as prefabricated concrete box culvert when interconnecting mortar can be filled in the space of this generation; Article one, the watertight band that can prevent seepage is attached to around the described mortar recess; Described mortar recess provides the crucial recess of shearing, and the recessed degree of described crucial shearing recess is recessed darker than described mortar recess; Another joint face of described prefabricated concrete box culvert provides the shearing wedge of shearing recess corresponding to key; When two described prefabricated concrete box culverts interconnected, described mortar recess and the described crucial space filling of shearing recess formation mortar; The lower plate of described prefabricated concrete box culvert and upper plate provide a mortar and pour into pipe and a stack, and described mortar pours into pipe and described stack has relation with the described crucial inner surface of shearing recess respectively; The exhaust component that described mortar pours into the grouting parts of pipe and described stack is exposed to the inner passage of described prefabricated concrete box culvert; When two prefabricated concrete box culverts interconnect when pouring into the described mortar of pipe perfusion by described mortar, air is from described emission by exhaust pipe, described mortar recess of described slurry placement and the described crucial space that recess generates of shearing, thus a firm adhesion provided for link.
With respect to prior art, above-mentioned prefabricated concrete box culvert provided by the invention, its assembly structure and a kind of assembly method, can make the joint face of the complete filling prefabricated concrete box culvert of mortar, thereby the prestressed loss that produces because of slip when reducing fixing tendon to greatest extent, make prefabricated concrete box culvert be assembled into one and have extremely strong connection power, solid and reliable structure, reduce the loss of tendon to greatest extent, avoid damage structure.
Description of drawings
Read following detailed description in conjunction with the accompanying drawings, can be expressly understood above-mentioned and other target of the present invention, feature and advantage more.Wherein,
Fig. 1 has shown the phantom drawing according to the prefabricated concrete box culvert of one embodiment of the invention assembling;
Fig. 2 has shown the phantom drawing of prefabricated concrete box culvert according to an embodiment of the invention;
Fig. 3 is along the elevation of the being seen prefabricated concrete box culvert of arrow D direction among Fig. 2;
Fig. 4 is the partial cross section figure of the prefabricated concrete box culvert taken along the A-A line among Fig. 3;
Fig. 5 is the partial cross section figure of the prefabricated concrete box culvert taken along the B-B line among Fig. 3;
Fig. 6 is the details drawing of circle C among Fig. 1;
Fig. 7 is the decomposition diagram of a two-way concrete slab bundle anchor device;
Fig. 8 has shown the sectional view of the two-way concrete slab bundle anchor device that is connected with a tendon;
Fig. 9-Figure 12 has shown the side view according to one embodiment of the invention assembling prefabricated concrete box culvert step;
Figure 13 has shown the details drawing that makes the two-way concrete slab bundle anchor device that tendon is connected with each other in the prefabricated concrete box culvert groove;
Figure 14 and Figure 15 have shown that slurry placement was in a mortar recess and a crucial partial cross section figure who shears the state of recess when prefabricated concrete box culvert interconnected.
The specific embodiment
Be with reference to the accompanying drawings a preferred embodiment of the present invention to be introduced below.In to following introduction of the present invention, for brief and concise to introducing of theme of the present invention, relevant known function and structure will not done detailed giving unnecessary details.
Fig. 1 is the phantom drawing according to the prefabricated concrete box culvert of one embodiment of the invention assembling, and Fig. 2 is the phantom drawing of prefabricated concrete box culvert according to an embodiment of the invention, and Fig. 3 is along the elevation of the being seen prefabricated concrete box culvert of arrow D direction among Fig. 2.
Just as shown in these figures, provide a mortar recess 211 on the joint face of prefabricated concrete box culvert, when prefabricated concrete box culvert interconnects, can generate a space, mortar can carry out filling by this space.Mortar recess 211 provides the keys more recessed than mortar recess 211 and shears recess 212, around mortar recess 211 be a watertight band 213, prevent seepage.
Meanwhile, another joint face of prefabricated concrete box culvert 201 is connected with the joint face of the prefabricated concrete box culvert that provides mortar recess 211, another joint face of prefabricated concrete box culvert 201 provides outstanding shearing wedge 214, shear wedge 214 and be inserted into crucial the shearing in the recess 213, as shown in Figure 2.Therefore, when these two prefabricated concrete box culverts connect, shear 214 of wedges and be inserted into crucial the shearing in the recess 213 respectively.When shearing wedge 214 is inserted into key shearing recess 213, between key shearing recess 212 and shearing wedge 214, a space has just been arranged, mortar is with this space of filling.
The lower plate 210 of prefabricated concrete box culvert and upper plate 220 are respectively fitted with the crucial associated mortar of recess 212 inner surfaces of shearing and pour into 300 and stacks 310 of pipe.Fig. 4 is the sectional view of the prefabricated concrete box culvert taken along the A-A line among Fig. 3, and Fig. 5 is the sectional view of the prefabricated concrete box culvert taken along the B-B line among Fig. 3.As Fig. 3 and shown in Figure 5, the inner 301 that mortar pours into pipe 300 is created on the inner surface of crucial shearing recess 212 on the lower plate 210, and mortar pours into 302 internal channels that are exposed to prefabricated concrete box culvert 201 of grouting parts of pipe 300.When the grouting parts 302 that pour into pipe 300 by mortar poured into mortar, mortar entered into the crucial recess 212 of shearing by inner 301.
The inner 311 of stack 310 also is created on crucial inner surface position of shearing recess 212 on the upper plate 220, and the exhaust component 312 of stack 310 is exposed to the internal channel of prefabricated concrete box culvert 201.When the air of key shearing recess 212 is discharged by the exhaust component 312 of the inner 311 and stack 310, the inner 311 of stack 310 also is created on crucial inner surface position of shearing recess 212 on the upper plate 220, the exhaust component 312 of stack 310 is exposed to the internal channel of prefabricated concrete box culvert 201, and the crucial air of shearing recess 212 is discharged by the exhaust component 312 of the inner 311 and stack 310.
According to the present invention, the exhaust component 312 that pours into pipe 300 grouting parts 302 and stack 310 in view of the mortar of being introduced all is exposed to the internal channel of prefabricated concrete box culvert, use the pump 500 in the box culvert just can very easily pour into mortar, with slurry placement mortar recess 211 and the space between key shearing recess 212 and shearing wedge 214.
Fig. 6 is the details drawing of circle C among Fig. 1.Each joint face of two joint faces of prefabricated concrete box culvert all generates in the position that is mounted with two-way concrete slab bundle anchor device groove 110, and groove 110 provides tendon and passes hole 112, and tendon 10 can pass this hole.Watertight band 215 can pass hole 112 attached to making mortar can not enter tendon around the groove 110.
The present invention has used following two-way concrete slab bundle anchor device.Fig. 7 is the decomposition diagram of a two-way concrete slab bundle anchor device 100, and Fig. 8 has shown the sectional view of the two-way concrete slab bundle anchor device shown in Figure 7 that is connected with 10b with tendon 10a.
Two-way concrete slab bundle anchor device 100 comprises a hollow coupling component 101, a pair of wedge shape awl 102a, 102b and a pair of wedge 103a, 103b.Wedge shape awl 102a is connected with coupling component 101 two ends respectively versatilely with 102b, and has the wedged hole 104a that lays respectively at this center, 104b.When blocking tendon 10a and 10b terminal, wedge 103a, 103b are installed in wedged hole 104a, and among the 104b, wedge shape awl 102a and 102b can be connected with coupling component 101 by screw with pulling down.
As shown in Figure 8, the external surface of wedge shape awl 102a and 102b preferably is created on center wedged hole 104a, around the 104b, have the surface rail face 107a that uses when inserting for tendon, 107b is so that tendon 10a, 10b can insert wedged hole 104a, 104b easily.Two-way concrete slab bundle anchor device 100 preferably is inserted with a spring 108, when inserting tendon 10b, if wedge 103b moves together, the phenomenon that wedge 103b can not block the tendon end fully will occur, and spring 108 can be avoided the generation of this phenomenon.
The tendon 10a on the left side is inserted among the wedged hole 104a of left wedge shape awl 102a center generation, and the tendon end is here blocked by wedge 103a.When hydraulic tensioning device and wedge shape awl 102a external surface contact when removing hydraulic pressure then with the dilatory tendon 10a of predefined tension force, wedge 103a is inserted and secured on wedge shape and bores among the wedged hole 104a of 102a when blocking tendon 10a.The end of fixing tendon 10a is cut away, coupling component 101 is connected with left wedge shape awl 102a by screw, right then wedge shape awl 102b is connected with coupling component 101 by screw, and spring 108 and right wedge 103b are inserted among coupling component 101 and the right wedge shape awl 102b together.
Subsequently, the tendon 10b that enters from the right direction is fixed on the right wedge shape awl 102b.The tendon 10b that the right direction enters is inserted among the wedged hole 104b of right wedge shape awl 102b, and the wedge 103b that is installed among the wedged hole 104b blocks.During the tendon 10b that enters when the right direction dilatory stretch-draw then of edge direction to the right, the wedge 103b that blocks tendon 10b preferably is fixed among the wedged hole 104b of right wedge shape awl 102b.
According to two-way concrete slab bundle anchor device 100 of the present invention, in such a manner, left tendon 10a and right tendon 10b are fixed on the both direction of a device, and tendon 10a and tendon 10b are by the coupling component 101 of anchor device 100 integrally, couple together continuously as a result.
When the assembling prefabricated concrete box culvert constitutes a whole box culvert structure, can use tendon to introduce prestressing force to the joint face of prefabricated concrete box culvert.According to the present invention, use two-way concrete slab bundle anchor device 100 can be on both direction fixing tendon, and basic connecting reinforcement bundle consequently uses a tendon just can play the effect of connection total.
Accompanying drawing has been introduced a kind of method of assembling prefabricated concrete box culvert according to the present invention, Fig. 9 has shown that to Figure 12 Figure 13 has shown the details drawing that tendon is interconnected on the two-way concrete slab bundle anchor device in the prefabricated concrete box culvert groove according to the side view of one embodiment of the invention assembling prefabricated concrete box culvert step.In Figure 12, for convenience's sake, beginning from the left side of accompanying drawing is respectively 201, the second prefabricated concrete box culverts 202 of first prefabricated concrete box culvert etc. at Fig. 9.
When one or more prefabricated concrete box culverts 201,202,203 be placed on the level land after, tendon 10a is inserted into tendon to be passed in the hole 112 (Fig. 9), the left end of the tendon 10a that inserts is fixed on the groove 110 that is positioned on first prefabricated concrete box culvert 201 left joint faces by wedge shape awl 102 and wedge 103, the right-hand member of tendon 10a is exposed to the outside of the 3rd prefabricated concrete box culvert 203, install with wedge shape awl 102a and wedge 103a, carry out stretch-draw and fixing with hydraulic tensioning device 400 then.
If use conventional one-way reinforcement bundle anchor device, just tendon can stretch at the joint face place of prefabricated concrete box culvert.But making locked-off is the centre (stake) that is provided in prefabricated concrete box culvert in this tendon anchor device, and therefore, the repulsive force of hydraulic means 400 can not be applied on the wedge shape awl when the stretching tendon.So,, prestressing force is greatly lost in case when the hydraulic pressure of hydraulic tensioning device removes, cause the displacement of standing part and the slip of anchor device most probably.
Yet, according to the present invention, because two-way concrete slab bundle anchor device 100 is mounted on the groove that prefabricated concrete box culvert 203 joint face places provide, and just can produce repulsive force when hydraulic tensioning device 400 stretching tendon 10a, this repulsive force just directly is applied on the wedge shape awl 102a.So, even remove the hydraulic pressure of hydraulic tensioning device, cause that the possibility that standing part displacement and anchor device slide reduces widely, therefore, the prestressed forfeiture that is applied on the tendon also can reduce.
When tendon 10a is fixed on the joint face of the 3rd prefabricated concrete box culvert 203, unnecessary tendon 10a is cut off, coupling component 101 is connected with the outside of wedge shape awl 102a, and right then wedge shape awl 102b also is connected (Figure 10) with the coupling component 101 of two-way concrete slab bundle anchor device 100.In other words, do not need to block among the wedged hole 104b that tendon 10b just can be inserted into right wedge 103b right wedge shape awl 102b, right wedge 103b is inserted in the coupling component 101.
The the 4th, the 5th and the 6th prefabricated concrete box culvert 204 subsequently, 205,206 place the back of the 3rd prefabricated concrete box culvert 203, and tendon 10b is by the the 4th, the 5th and the 6th prefabricated concrete box culvert 204,205,206 tendon passes hole 112 and inserts.The size that has also generated the groove 110 of 110, the four prefabricated concrete box culverts 204 of groove in the face of the joint face of the 4th prefabricated concrete box culvert 204 of the 3rd prefabricated concrete box culvert 203 joint faces is preferably greater than right groove 110 sizes of the 3rd prefabricated concrete box culvert 203.When according to this structure prefabricated concrete box culvert being installed, even some setup errors occur, the bidirectional anchoring device that was fixed on the mounted already prefabricated concrete box culvert just can place on the groove of prefabricated concrete box culvert subsequently easily.
Tendon 10b is inserted into tendon and passes hole 112, give prominence to outside at the 4th prefabricated concrete box culvert 204 left joint faces, outstanding tendon 10b is inserted among the wedged hole 104b of mounted already two-way concrete slab bundle anchor device 100 right wedge shape awl 102b, and the wedge 103b that is positioned among the wedged hole 104b blocks.When right wedge shape awl 102b with at wedged hole 104b insertion portion, when having the guide pass 107a of inclined surface to be positioned at its external surface together on every side, tendon 10b can insert (Figure 11) along guide pass 107a easily when tendon 10b inserts wedged hole 104b.
The other end as the tendon 10b of new insertion, for example give prominence to the end of the tendon 10b outside the joint face of the 6th prefabricated concrete box culvert 206, to be stretched by hydraulic tensioning device 400 as mentioned above, tendon 10b is dilatory to the right, is fixed on the right wedge shape awl 102b that is installed on the 4th the prefabricated concrete box culvert 204 left joint faces.In other words, dilatory to the right by blocking the wedge 103b that tendon 10b is installed among the right wedge shape awl 102b wedged hole 104b, be inserted into completely among the wedged hole 104b then, make tendon 10b be fixed among the right wedge shape awl 102b.When tendon 10b is fixed in the 4th prefabricated concrete box culvert 204 joint faces, as mentioned above, heavily cover the 203 relevant fixedly operations of tendon of the 3rd prefabricated concrete box culvert, tendon 10b just can be fixed to the right surface (Figure 12) of the 6th prefabricated concrete box culvert 206.
When by heavily covering operation prefabricated concrete box culvert being coupled together continuously, tendon is fixed on both direction, and also is connected with each other basically, can play the effect of using a tendon just can connect total.In addition, if can the length of two grooves connecting is longer slightly when some than the length of bidirectional anchoring device, the prestressing force forfeiture that produces when tendon being stretched once more just can make in previous step fixing tendon further reduces, and can also eliminate the fixedly stress of stage ground pressure.Like this, because the creep of concrete phenomenon duration is longer, can avoid prestressing force to descend substantially.
Subsequently, use slurry placement mortar recess 211 and the crucial recess 212 of shearing.Mortar pours into pipe 300 grouting parts 302 by mortar especially and pours under pressure, mortar pours into pipe 300 and has relation with the crucial inner surface of shearing recess 212 in lower plate 220 places.Crucial this space of shearing between recess 212 and the shearing wedge 214 of the slurry placement of perfusion have living space owing to shear recess 212 with being inserted into to retain between the crucial shearing wedge 214 of shearing recess 212 in key.In addition, pour into the mortars filling mortar recess 211 also of pipe 300 perfusions by mortar.Figure 14 and Figure 15 have shown when being connected prefabricated concrete box culvert mortar recess 211 and have crucially sheared the sectional view that recess 212 is filled with mortar.
When mortar is sheared recess 212 and a left side/right wall 230 with being pumped into the mortar recess 211, the key that pour on the pipe 300 filling lower plates successively 210 by mortar, and the mortar recess on the upper plate 220 211 and crucial when shearing recess 212, inner air is discharged by mortar, subsequently by 310 dischargings of the stack on the upper plate 220.Mortar is perfusion constantly under pressure, discharges by the stack on the upper plate 220 310 until mortar.Then, mortar pours into exhaust component 312 sealings of the grout pipe 302 and the stack 310 of pipe 300, finishes grouting operation.
Especially, the method according to this invention, with slurry placement mortar recess 211 and the crucial recess 212 of shearing, the two-way concrete slab bundle anchor device 100 that is installed on the corner groove 110 also is embedded in the mortar, itself and outside air is completely cut off, thereby corrosion can not take place.
In prefabricated concrete box culvert of the present invention, except box culvert body corner, a plurality of bidirectional anchoring devices can be installed on the joint face of upper plate, lower plate and the left and right wall of box culvert body.
Just as described above, the method according to this invention, because prefabricated concrete box culvert couples together with the crucial recess of shearing with shearing wedge, the resistance of the shear stress between the prefabricated concrete box culvert to be installed should be very high.In addition, owing to shear wedge in plant produced, and structure is very simple, and the one-tenth of producing prefabricated concrete box culvert should reduce, but also can operate at the scene easily.
In addition, because mortar is to be filled into to shear in wedge and the crucial slit of shearing between the recess under pressure, mortar is the space between the filling prefabricated concrete box culvert fully, thereby can obtain firm bonding strength and fabulous waterproof characteristic.Especially, because mortar injection parts and exhaust component all are exposed to the inner passage of prefabricated concrete box culvert, it is very easy to pour into.In addition, because perfusion operation can also implement rebuilding or renovate after, can prevent like this that the gene basis is upset during the ground works solidifies mortar breaking of generation often.
Moreover, because tendon provides tension force between prefabricated concrete box culvert, can assemble prefabricated concrete box culvert securely like this.Particularly owing to used the bidirectional anchoring device, tendon can be fixed at two ends, and then is connected with each other.So when the assembling prefabricated concrete box culvert, applying prestressed tendon is whole the connection on whole box culvert, thereby the adhesion between the assembly type prefabricated concrete box culvert can strengthen.
Furthermore, the method according to this invention is because the prestressing force forfeiture that locked-off to the joint face of prefabricated concrete box culvert, produces in the time of can reducing fixedly to greatest extent.So, can apply suitable prestressing force to prefabricated concrete box culvert fully, thereby greatly strengthen the connection of assembly type prefabricated concrete box culvert.
Especially,,, thereby make locked-off, just produced the structure problem that the reinforcement bar that is arranged on the prefabricated concrete box culvert need cut away here because locked-off partly is by hiding the inside center of prefabricated concrete box culvert according to early stage technology.Yet, the method according to this invention, because locked-off part (groove) is to be positioned at joint face, the existing problem of this routine techniques just can not take place.
In addition, according to early stage technology, though also embedding with the fixing locked-off part of stake by mortar etc., because the incomplete combination of New-old concrete can cause rain leakage, thus the corrosion tendon.But the method according to this invention owing to do not need to use this stake, can be avoided corrosion substantially.
Moreover, according to early stage technology,, after fixing tendon, will be abandoned to its terminal tendon from standing part because locked-off partly is positioned at the center of prefabricated concrete box culvert.But the method according to this invention because tendon is the joint face that is fixed to prefabricated concrete box culvert, can not wasted tendon.So the tendon quantity of use can reduce, thereby reducings the construction costs.
Although the present invention is introduced and illustrates with some preferred embodiment, those skilled in the art will appreciate that, only otherwise depart from the defined the spirit and scope of the present invention of the claim of enclosing, no matter can make multiple change in form or in terms of content.
Claims (7)
1. a prefabricated concrete box culvert box shape formation, that a plurality of box culverts of energy are linked and packed continuously is characterized in that:
Provide recessed mortar recess (211) on the joint face of described prefabricated concrete box culvert, so as prefabricated concrete box culvert when interconnecting mortar can be filled in the space of this generation;
Article one, the watertight band (213) that can prevent seepage is attached to around the described mortar recess (211);
Described mortar recess (211) provides the crucial recess (212) of shearing, and the recessed degree of described crucial shearing recess (212) is recessed darker than described mortar recess (211);
Another joint face of described prefabricated concrete box culvert provides the shearing wedge (214) of shearing recess (212) corresponding to key;
When two described prefabricated concrete box culverts interconnected, described mortar recess (211) and the described crucial space filling of shearing recess (212) formation mortar;
Lower plate of described prefabricated concrete box culvert (210) and upper plate (220) provide a mortar and pour into a pipe (300) and a stack (310), and described mortar pours into pipe (300) and described stack (310) has annexation with the described crucial inner surface of shearing recess (212) respectively;
The exhaust component (312) that described mortar pours into the grouting parts (302) of pipe (300) and described stack (310) is exposed to the inner passage of described prefabricated concrete box culvert (201).
2. prefabricated concrete box culvert according to claim 1 is characterized in that:
Each joint face of two joint faces of described prefabricated concrete box culvert all provides a groove (110);
Described groove (110) is positioned at the center that tendon passes hole (112), tendon (the 10a that stretches, 10b) pass described tendon and pass hole (112), so that when continuously prefabricated concrete box culvert being installed, tendon (the 10a that inserts, 10b) be stretched, be fixed on joint face, thereby prefabricated concrete box culvert is applied a compressive force;
Described groove (110) is placed in the position of a two-way concrete slab bundle anchor device (100), be used for stretching, fixedly tendon (10a, 10b), (10a, 10b) integral body couples together to make tendon.
3. prefabricated concrete box culvert according to claim 2 is characterized in that:
Described two-way concrete slab bundle anchor device (100) comprise a hollow coupling component (101), a pair of wedge shape awl (102a, 102b) and a pair of wedge (103a, 103b);
Described wedge shape awl (102a 102b) is connected versatilely with coupling component (101) two ends, and have the wedge shape of being positioned at bore (102a, 102b) wedged hole at center (104a, 104b);
Described wedge (103a, 103b) block described tendon (10a, end 10b), be inserted into described wedge shape awl (102a, described each wedged hole 102b) (104a, 104b) in, fixing described tendon (10a, 10b), make it fixing on both direction, and connect by described coupling component (101).
4. the assembly structure of box shape prefabricated concrete box culvert that constitute, that can a plurality of box culverts be linked and packed continuously is characterized in that:
A joint face of described prefabricated concrete box culvert provides recessed mortar recess (211), so as prefabricated concrete box culvert when interconnecting mortar can be filled in the space of this generation;
Article one, the watertight band (213) that can prevent seepage is attached to around the described mortar recess (211);
Described mortar recess (211) provides the crucial recess (212) of shearing, and the recessed degree of described crucial shearing recess (212) is recessed darker than described mortar recess (211);
Another joint face of described prefabricated concrete box culvert provides the shearing wedge (214) of shearing recess (212) corresponding to key;
When two described prefabricated concrete box culverts interconnected, described mortar recess (211) and the described crucial space filling of shearing recess (212) formation mortar;
Lower plate of described prefabricated concrete box culvert (210) and upper plate (220) provide a mortar and pour into a pipe (300) and a stack (310), and described mortar pours into pipe (300) and described stack (310) has annexation with the described crucial inner surface of shearing recess (212) respectively;
The exhaust component (312) that described mortar pours into the grouting parts (302) of pipe (300) and described stack (310) is exposed to the inner passage of described prefabricated concrete box culvert (201);
When two prefabricated concrete box culverts interconnect when pouring into the described mortar of pipe (300) perfusion by described mortar, air discharges from described stack (310), described mortar recess of described slurry placement (211) and the described crucial space that recess (212) generates of shearing, thus a firm adhesion provided for link.
5. the assembly structure of prefabricated concrete box culvert according to claim 4 is characterized in that:
Generate on the joint face of described prefabricated concrete box culvert groove (110) is arranged;
Described groove (110) is positioned at the center that tendon herein passes hole (112), and (10a 10b) passes described tendon and passes hole (112) tendon of stretching;
Article one, the watertight band (215) of circle makes described mortar can not enter described tendon and passes hole (112) attached to described groove (110) on every side;
When a plurality of described prefabricated concrete box culvert is installed, is inserted into described tendon and passes the described tendon in hole (112) (10a 10b) is stretched, and is fixed on described joint face, thereby described prefabricated concrete box culvert is applied a compressive force;
Described groove (110) is placed in the position of a two-way concrete slab bundle anchor device (100), be used for stretching, fixedly tendon (10a, 10b), make tendon (10a, 10b) integral body couples together;
When constantly being placed with contiguous described prefabricated concrete box culvert, described two-way concrete slab bundle anchor device (100) makes the described tendon (10a under the extended state, 10b) connect, thereby the prefabricated concrete box culvert to whole placement applies a described compressive force, and described prefabricated concrete box culvert is assembled into an integral body.
6. continuous method of a plurality of box shape prefabricated concrete box culverts of assembling is characterized in that:
A joint face of described prefabricated concrete box culvert provides recessed mortar recess (211), so as prefabricated concrete box culvert when interconnecting mortar can be filled in the space of this generation;
Article one, the watertight band (213) that can prevent seepage is attached to around the described mortar recess (211);
Described mortar recess (211) provides the crucial recess (212) of shearing, and the recessed degree of described crucial shearing recess (212) is recessed darker than described mortar recess (211);
Another joint face of described prefabricated concrete box culvert provides the shearing wedge (214) of shearing recess (212) corresponding to key;
When two described prefabricated concrete box culverts interconnected, described mortar recess (211) and the described crucial space filling of shearing recess (212) formation mortar;
Lower plate of described prefabricated concrete box culvert (210) and upper plate (220) provide a mortar and pour into a pipe (300) and a stack (310), and described mortar pours into pipe (300) and described stack (310) has annexation with the described crucial inner surface of shearing recess (212) respectively;
The exhaust component (312) that described mortar pours into the grouting parts (302) of pipe (300) and described stack (310) is exposed to the inner passage of described prefabricated concrete box culvert (201);
When two prefabricated concrete box culverts interconnect when pouring into the described mortar of pipe (300) perfusion by described mortar, air discharges from described stack (310), described mortar recess of described slurry placement (211) and the described crucial space that recess (212) generates of shearing, thus a firm adhesion provided for link.
7. method according to claim 6 is characterized in that:
A joint face of described prefabricated concrete box culvert provides groove (110);
Described groove (110) is positioned at the center that tendon herein passes hole (112), and (10a 10b) passes described tendon and passes hole (112) tendon of stretching;
A plurality of described prefabricated concrete box culverts are installed continuously, and (10a 10b) passes hole (112) by described tendon and inserts, fixes described then tendon;
Described groove (110) is placed in the position of a two-way concrete slab bundle anchor device (100), when continuing the described prefabricated concrete box culvert of assembling, be used for stretching, fixing described tendon (10a, 10b), make to be applied with a compressive force on the whole described prefabricated concrete box culvert, thereby its integral body is assembled up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101689873A CN101205724B (en) | 2006-12-19 | 2006-12-19 | Prefabricated concrete box culvert using grouting method and bidirectional anchoring system as well as mounting structure and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101689873A CN101205724B (en) | 2006-12-19 | 2006-12-19 | Prefabricated concrete box culvert using grouting method and bidirectional anchoring system as well as mounting structure and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101205724A CN101205724A (en) | 2008-06-25 |
| CN101205724B true CN101205724B (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006101689873A Expired - Fee Related CN101205724B (en) | 2006-12-19 | 2006-12-19 | Prefabricated concrete box culvert using grouting method and bidirectional anchoring system as well as mounting structure and method thereof |
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| CN102418319A (en) * | 2011-09-23 | 2012-04-18 | 新疆交通科学研究院 | Prefabricated assembled box culvert and construction method thereof |
| CN103290863B (en) * | 2012-03-03 | 2016-02-03 | 四川华西绿舍预制构件有限公司 | Box culvert arc syndeton |
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