CN100588776C - Equipment for manufacturing beam base with pretensioned prestressing concrete box beam - Google Patents
Equipment for manufacturing beam base with pretensioned prestressing concrete box beam Download PDFInfo
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- CN100588776C CN100588776C CN200710050510A CN200710050510A CN100588776C CN 100588776 C CN100588776 C CN 100588776C CN 200710050510 A CN200710050510 A CN 200710050510A CN 200710050510 A CN200710050510 A CN 200710050510A CN 100588776 C CN100588776 C CN 100588776C
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Abstract
The invention discloses a pre-tensioned prestressing concrete box bean fabrication pedestal equipment which belongs to the equipment of beam bridge prefabrication, aims at solving the problem of the prior art having no ability to prepare the prestressing concrete box beam in the 32m/900t level, and comprises a prefabrication pedestal, a tension system which is arranged on the prefabrication pedestal; wherein, the prefabrication pedestal comprises a pedestal basis which is embedded in the ground and a guide device and a template system which are arranged on the pedestal basis, and the tension system comprises a tension transfer column which is arranged on the pedestal basis, a lifting jack which is arranged on the end of the tension transfer column, protection supports which are distributedaround the lifting jack, and a tension crossbeam which protects and supports the external side; the end of the tension transfer column is a step shape which is salient in the lower part, and the tension crossbeam is divided into a tension upper crossbeam which is arranged on the step in the step-shaped end of the tension transfer column and a tension lower beam which is arranged on the pedestal basis under the step in the step-shaped end of the tension transfer column, and is applicable to manufacturing the prestressing concrete box beam in the 32m/900t level.
Description
Technical field
The invention belongs to the prefabricated equipment of beam bridge, particularly use pretensioning prestressed concrete case beam and carry out beam prefabricated pedestal equipment.
Background technology
Pre-tensioning system is earlier prestressed reinforcement (silk) to be applied certain pulling force, builds concrete again, cuts off prestressed reinforcement (silk) again when concrete reaches certain intensity, and makes member obtain prestressed a kind of method, i.e. fluid concrete behind the pretensioned steel.Pre-tensioning system be reinforcing bar on pedestal by the tension of the tension stress of designing requirement, build then on the coagulation, treat concrete reach certain intensity and with the reinforcing bar secure bond after, loosen reinforcing bar.Because the retraction of reinforcing bar is so and the adhesion stress of concrete and reinforcing bar stops this retraction. the pulling force of reinforcing bar is transmitted on the concrete, makes concrete obtain the top and answers pressure.
In the pedestal equipment of the prefabricated beam bridge of existing pre-tensioning system, mostly form of reinforcement is to adopt the straight line arrangement of reinforcement, and the beam maximum span of opening earlier commonly used is confined to below the 20m.Still do not adopt at present broken line to join the presstressed reinforcing steel box beam and use the pedestal equipment that pre-tensioning system is made 32m/900t level prestressed concrete box girder, especially tension tonnage reaches 52000kN, does not see bibliographical information especially.
Summary of the invention
The purpose of this invention is to provide a kind of pretensioning prestressed concrete case beam beam making bench, can make 32m/900t level prestressed concrete box girder, can guarantee under the effect of 52000kN large-tonnage stretching force stretch-draw and put the safety of opening and guarantee stretch-draw and put the efficient of opening.
Purpose of the present invention realizes by following technical proposals:
Equipment for manufacturing beam base with pretensioned prestressing concrete box beam comprises beam making bench and stretch-draw system disposed thereon, and beam making bench constitutes by being embedded in pedestal basis in the ground and guiding device and the template system that is arranged on the pedestal basis; The stretch-draw system by be arranged on the force-transmitting pole on the pedestal basis and be arranged on the force-transmitting pole end jack, be distributed in very heavy Periapical protection and support and be positioned at the stretch-drawing beam that jack, protection support the outside and constitute, the end of force-transmitting pole be the bottom protrude step-like, stretch-drawing beam is divided into the stretch-draw top rail on the step that is positioned at the force-transmitting pole stepped end and is positioned at stretch-draw lower transverse beam on the pedestal basis under the step of force-transmitting pole stepped end; Guiding device comprises the disposable use part that the beam body of the first Zhang Liang that is embedded in made is interior and is arranged at its outer repeated use part, disposable use partly comprises the support side plate that is connected by connecting bolt, between support side plate, be furnished with guide roller at interval, reuse part and comprise the connecting ring that is connected with the support side plate lower end by connecting pin, the lower end of connecting ring is connected with bed frame by fixed axis, and the bottom of bed frame is connected with the pedestal basis by stone bolt.Stretch-drawing beam is by the stretch-draw of straight-line prestressed muscle and broken line steel bar and put Zhang Yaoqiu and be set to stretch-draw lower transverse beam and stretch-draw top rail respectively, and stretch-drawing beam adopts movably steel box structure; The force-transmitting pole end is designed to step-like, so that the stretch-draw top rail is installed on step, satisfies the stretch-draw of case beam broken line muscle.
The template of described template system is made of beam bottom board plate, side template and Side Template, and side template and soffit formwork adopt fixed, and by designing requirement the reservation of beam body decrement, antiarch amount and end displacement amount is set.
Described template system comprises that the bottom is embedded in big support screw in the pedestal basis, is distributed in support screw and revenue and expenditure screw mandrel between the big support screw; The inboard of above-mentioned each screw mandrel is installed with falsework with it; The end sides of beam making bench is provided with side template end joint, and falsework is provided with side template termination template supporting seat, and is provided with the working platform support, is equipped with the termination working platform on the working platform support; The side, middle part of beam making bench is provided with the general joint of side template, falsework is provided with the general joint template of side template supporting seat, also be provided with the working platform support, be equipped with general working platform on the working platform support, formerly the outside of Zhang Liang also is provided with case beam closure plate; The top on the basis, middle part, concrete operation area on pedestal basis is provided with the beam bottom board plate; The arranged outside of working platform support has the side template railing.
The structure of other parts is as follows respectively among the present invention:
Described pedestal basis is made of two parts symmetrical, every part comprises footing beam respectively and is arranged on guiding device pre-embedded bolt in the footing beam, is arranged on strip foundation and basis, middle part, stretch-draw operation area on the footing beam, in the arranged outside of strip foundation the force-transmitting pole buttress of imbedding in the footing beam arranged; Be provided with basis, middle part, concrete operation area between the two parts symmetrical, be close to place, basis, middle part, concrete operation area and be provided with basis, end, concrete operation area, be close to place, basis, end, concrete operation area and be provided with basis, end, stretch-draw operation area; Force-transmitting pole is arranged on the basis, middle part, stretch-draw operation area; Above-mentioned each basis, operation area disconnects mutually.
Described force-transmitting pole comprises force-transmitting pole middle part and force-transmitting pole end, the width of force-transmitting pole end is greater than the force-transmitting pole middle part, the force-transmitting pole end is provided with and is tilted to the left in " L " of vertical line shape end step, be connected with the stretch-draw top rail after the broken line muscle of the Zhang Liang of elder generation passes the vertical part of this " L " shape end step, the straight line muscle of first Zhang Liang is connected with the stretch-draw lower transverse beam after passing the vertical part of this force-transmitting pole end; The inboard, vertical part of end step is provided with the spring muscle that can supply the broken line muscle to pass, and the inboard, vertical part of force-transmitting pole end is provided with steel plate, is close to steel plate and is provided with reinforced mesh, and the inboard of reinforced mesh is provided with the spring muscle that can supply the straight line muscle to pass.Force-transmitting pole adopts the C50 reinforced concrete structure, can satisfy case beam 52000kN stretching force and non-unstability; The force-transmitting pole end spreads to 2.5m so that jack is installed and the spiral support.
Described stretch-drawing beam comprises stacked steel case up and down, the left and right sides plate of steel case is a steel plate, pass through the slab bolt together between two steel casees up and down, the arranged outside of steel case junction has stacked anchor plate up and down, the steel strand at straight line muscle or broken line muscle and anchor plate middle part are connected, the stretch-draw lower transverse beam be provided with steel pipe between the two steel casees up and down.Stretch-drawing beam is divided into upper and lower crossbeam, the different directions displacement during with assurance straight line muscle and the stretch-draw of broken line muscle; Adopt the steel box structure, Cross section Design is reasonable, and is little in the distortion of 52000kN stretching force effect lower transverse beam; Two steel case bolt assembly units are so that make, dismantle, transport and install; Stretch-drawing beam assembling anchor plate applies prestressing force to satisfy the different presstressed reinforcing steel radicals of the following different spans of a 32m elder generation case beam; The prestressing force radical of stretch-draw lower transverse beam anchoring is more, establishes three row's steel pipes between two steel box structures, is convenient to lashing.
The steel plate thickness that is provided with on the end of described force-transmitting pole is that 30mm, reinforced mesh are four layers.Force-transmitting pole end jack active position adopts 30mm steel plate, spring muscle and 4 layers of reinforced mesh to strengthen, and guarantees the intensity in the concrete partial pressing in 52000kN stretching force bottom.
Described jack be divided into the end step that is arranged at the force-transmitting pole end the vertical part outside last jack and be arranged at following jack outside the transverse part of end step; The every side of last jack is one, is positioned at the center of protection support distribution; Following jack is five, is four around middle one symmetrical distribution.
Described protection is supported for the screw with T type screw thread and supports, and is divided into being distributed in very heavy Periapical upward protection support and being distributed in down the very heavy Periapical support of protection down.Whenever finish one-level stretch-draw, the locking jack and in time screws the protection studdle, avoids jack to lose efficacy or supports accident generations such as producing pressure release because of long-time.The protection studdle adopts 42CrMo structural alloy steel, T type screw thread.The design supporting capacity of each studdle of top rail is that 1500kN, lower transverse beam are 6000kN.
The described hydraulic circuit of going up jack and following jack adopts separate pumping plant fuel feeding respectively, constitutes respectively to go up jack oil circuit and following jack oil circuit.For guaranteeing the synchronism of jack, the upper and lower crossbeam of every end adopts a cover pumping plant, and full beam adopts quadruplet Superhigh Pressure Hydraulic System pumping plant altogether, and every cover pumping plant is guaranteed fuel feeding safety and fuel feeding efficient with two table oil parallel connection of pumps fuel feeding.
The described jack oil circuit of going up comprises first safety overflow valve that is connected between the first pumping plant oil-out and the system oil return passage, first solenoid operated directional valve that oil-in is connected with the first pumping plant oil-out, two actuator ports of first solenoid operated directional valve are connected with the oil-in of first hydraulic control one-way valve, second hydraulic control one-way valve respectively, and staggered be connected with the control port of two hydraulic control one-way valves respectively, the oil-out of first hydraulic control one-way valve is connected with the oil return opening of last jack, and the oil-out of second hydraulic control one-way valve is connected with the oil-in of last jack.
Described down jack oil circuit comprises second safety overflow valve that is connected between the second pumping plant oil-out and the system oil return passage, second solenoid operated directional valve that oil-in is connected with the second pumping plant oil-out, two actuator ports of second solenoid operated directional valve are connected with the oil-in of the 3rd hydraulic control one-way valve, the 4th hydraulic control one-way valve respectively, and staggered be connected with the control port of two hydraulic control one-way valves respectively, the oil-out of the 3rd hydraulic control one-way valve is connected with the oil return opening of following jack, and the oil-out of the 4th hydraulic control one-way valve is connected with the oil-in of following jack.
The be connected in parallel oil-in of jack on above-mentioned two platforms of the be connected in parallel oil return opening of jack on two platforms of the oil-out of described first hydraulic control one-way valve, the oil-out of second hydraulic control one-way valve; The be connected in parallel oil-in of jack under above-mentioned ten platforms of the be connected in parallel oil return opening of jack under ten platforms of the oil-out of the 3rd hydraulic control one-way valve, the oil-out of the 4th hydraulic control one-way valve.Ten at the every end of lower transverse beam, two self-locking hydraulic jack oil of the every end of top rail top, the shunt circuit fuel feeding is adopted on each oil top, the chain loop of using hydraulic control one-way valve to form, stretch-draw safety is guaranteed in the convenient locking that realizes on the optional position.
Adopt extra-high voltage magnet valve and hydraulically-controlled one-way valve, guarantee that oil does not leak under high oil pressure, control is quick on the draw, and guarantees the synchronous effect of many jack, stretch-draw and put Zhang Ping surely, safety.
After the present invention adopts said structure, have following beneficial effect:
(1) force-transmitting pole can satisfy straight, the broken line muscle stretch-draw of case beam; Can bear case beam 52000kN stretching force; The action space of tensioning equipment can be provided;
Different directions displacement when (2) stretch-drawing beam guarantees straight line muscle and the stretch-draw of broken line muscle; Little in the distortion of 52000kN stretching force effect lower transverse beam, loss of prestress is in scope of design; The box stretch-drawing beam of steel is convenient to make, dismantles, transports and is installed; Can satisfy a 32m and following different spans elder generation case beam and apply prestressing force, it is convenient to wear the steel bundle.
(3) devices such as the large-tonnage stretch-draw jack of Xuan Zeing, large-tonnage jack protection support, stretch-draw oil circuit are fit to 52000kN stretching force needs; Stretch-draw and put an equipment and can guarantee under the effect of 52000kN large-tonnage stretching force stretch-draw and put the safety of opening and guarantee stretch-draw and put the efficient of opening.
As seen, adopt the present invention of said structure, be applicable to and make 32m/900t level prestressed concrete box girder.
Description of drawings
Fig. 1 is a general structure schematic diagram of the present invention;
Fig. 2 is the structural representation on pedestal of the present invention basis;
Fig. 3 is the schematic top plan view of Fig. 2;
Fig. 4 be among Fig. 2 A-A` to B-B` to 1/2 cross section splicing schematic diagram;
Fig. 5 is the structural representation of force-transmitting pole of the present invention;
Fig. 6 is the schematic diagram of force-transmitting pole end construction of the present invention;
Fig. 7 is a force-transmitting pole of the present invention middle part schematic diagram;
Fig. 8 is a force-transmitting pole end view of the present invention;
Fig. 9 is that stretch-drawing beam of the present invention is arranged schematic diagram;
Figure 10 is a stretch-drawing beam structural representation of the present invention;
Figure 11 is the schematic side view of Figure 10;
Figure 12 is the jack and the protection support arrangement figure at stretch-draw top rail of the present invention place;
Figure 13 is the jack and the protection support arrangement figure at stretch-draw lower transverse beam of the present invention place;
Figure 14 is a hydraulic circuit schematic diagram of going up jack of the present invention;
Figure 15 is the hydraulic circuit schematic diagram of jack down of the present invention;
Figure 16 is the structural representation of template system of the present invention;
Figure 17 is that template system of the present invention is at 1/2 cross section at beam making bench end and middle part splicing schematic diagram;
Figure 18 is the structural representation of single guiding device of the present invention;
Figure 19 is that the side of Figure 18 is cutd open schematic diagram;
Number in the figure; the 1st, the pedestal basis; the 101st, the guiding device pre-embedded bolt; the 102nd, basis, middle part, concrete operation area; the 103rd, strip foundation; the 104th, the force-transmitting pole buttress; the 105th, basis, end, concrete operation area; the 106th, basis, end, stretch-draw operation area; the 107th, basis, middle part, stretch-draw operation area; the 2nd, guiding device; the 201st, guide roller; the 202nd, support side plate; the 203rd, connecting bolt; the 204th, connecting ring; the 205th, connecting pin, the 206th, bed frame, the 207th, fixed axis; the 208th, sliding sleeve; the 209th, axle clamp plate, the 210th, stone bolt, the 3rd, template system; the 31st, the beam bottom board plate top surface; the 32nd, side template end joint, the 33rd, the general joint of side template, the 34th, beam bottom board plate; the 35th, support screw; the 36th, revenue and expenditure screw mandrel, the 37th, big support screw, the 38th, V-block; the 39th, the side template railing; the 310th, working platform support, the 311st, side template termination template supporting seat, the 312nd, case beam closure plate; the 313rd, the general joint template of side template supporting seat; the 314th, general working platform, the 315th, termination working platform, the 316th, falsework; the 4th, stretch-drawing beam; the 41st, stretch-draw top rail, the 42nd, stretch-draw lower transverse beam, the 421st, anchor plate; the 422nd, steel strand; the 423rd, steel case, the 424th, slab, the 425th, steel pipe; the 5th, force-transmitting pole; the 51st, force-transmitting pole middle part, the 52nd, force-transmitting pole end, the 521st, spring muscle; the 522nd, steel plate; the 523rd, reinforced mesh, the 53rd, end step, the 6th, jack; the 61st, last jack; 6101 is first pumping plants, and 6102 is first safety overflow valves, and 6103 is first solenoid operated directional valves; 6104 is first hydraulic control one-way valves; 6105 is second hydraulic control one-way valves, the 62nd, and following jack, 6201 is second pumping plants; 6202 is second safety overflow valves; 6203 is second solenoid operated directional valves, and 6204 is the 3rd hydraulic control one-way valves, and 6205 is the 4th hydraulic control one-way valves; the 7th, protection is supported; the 71st, last protection is supported, and the 72nd, following protection is supported, and the 8th, the broken line muscle; the 9th, the straight line muscle; the 10th, first Zhang Liang, the 11st, protection counter force wall, the 12nd, the bottom surface of first Zhang Liang.
The specific embodiment
The present invention is further illustrated below in conjunction with specific embodiments and the drawings.
As shown in Figure 1, equipment for manufacturing beam base with pretensioned prestressing concrete box beam comprises beam making bench and stretch-draw system disposed thereon, and beam making bench constitutes by being embedded in pedestal basis 1 in the ground and guiding device 2 and the template system 3 that is arranged on the pedestal basis 1; The stretch-draw system by be arranged on the force-transmitting pole 5 on the pedestal basis 1 and be arranged on force-transmitting pole 5 ends jack 6, be distributed in protection around the jack 6 and support 7 and be positioned at the stretch-drawing beam 4 that jack 6, protection support 7 outsides and constitute; the end of force-transmitting pole 5 be the bottom protrude step-like, stretch-drawing beam 4 is divided into the stretch-draw top rail 41 on the step that is positioned at force-transmitting pole 5 stepped end and is positioned at stretch-draw lower transverse beam 42 on the pedestal basis 1 under the step of force-transmitting pole 5 stepped end.Also be provided with protection counter force wall 11 in the outside of stretch-drawing beam 4.
As Fig. 2, Fig. 3, shown in Figure 4, pedestal basis 1 is made of two parts symmetrical, every part comprises footing beam respectively and is arranged on guiding device pre-embedded bolt 101 in the footing beam, is arranged on strip foundation 103 and basis, middle part, stretch-draw operation area 107 on the footing beam, in the arranged outside of strip foundation 103 the force-transmitting pole buttress of imbedding in the footing beam 104 arranged; Be provided with basis, middle part, concrete operation area 102 between the two parts symmetrical, be close to basic 102 places, middle part, concrete operation area and be provided with basis, end, concrete operation area 105, be close to 105 places, basis, end, concrete operation area and be provided with basis, end, stretch-draw operation area 106; Force-transmitting pole 5 is arranged on the basis, middle part, stretch-draw operation area 107; Above-mentioned each basis, operation area disconnects mutually.Fig. 4 is that A-A` and the B-B` face among Fig. 2 got 1/2 structural representation that is spliced from its symmetrical center line respectively.
Stretch-drawing beam 4 is as Fig. 9, Figure 10, shown in Figure 11, be divided into the stretch-draw top rail 41 on the step that is positioned at force-transmitting pole 5 stepped end and be positioned at stretch-draw lower transverse beam 42 on the pedestal basis 1 under the step of force-transmitting pole 5 stepped end, comprise stacked steel case 423 up and down respectively, the left and right sides plate of steel case 423 is a steel plate, pass through slab 424 bolts together between two steel casees 423 up and down, the arranged outside of steel case 423 junctions has stacked anchor plate 421 up and down, straight line muscle 9 or broken line muscle 8 are connected with the steel strand 422 at anchor plate 421 middle parts, stretch-draw lower transverse beam 42 be provided with steel pipe 425 between the two steel casees up and down.Stretch-drawing beam is divided into upper and lower crossbeam, the different directions displacement during with assurance straight line muscle 9 and 8 stretch-draw of broken line muscle; Adopt the structure of steel case 423, Cross section Design is reasonable, and is little in the distortion of 52000kN stretching force effect lower transverse beam; Adopt Q345C type slab 424, solderability is good, guaranteed welding quality, improved the strength and stiffness of structure, two steel case bolt assembly units so as to make, dismounting, transportation and install; Crossbeam assembling anchor plate 421 applies prestressing force to satisfy the different presstressed reinforcing steel radicals of the following different spans of a 32m elder generation case beam; The prestressing force radical of stretch-draw lower transverse beam 42 anchorings is more, establishes three row's steel pipes 425 between two steel box structures, is convenient to lashing.
Force-transmitting pole 5 is as Fig. 5, Fig. 6, Fig. 7, shown in Figure 8, comprise force-transmitting pole middle part 51 and force-transmitting pole end 52, the width of force-transmitting pole end 52 is greater than force-transmitting pole middle part 51, force-transmitting pole end 52 is provided with and is tilted to the left in " L " of vertical line shape end step 53, the broken line muscle 8 of opening earlier beam 10 is connected with stretch-draw top rail 41 after passing the vertical part of this " L " shape end step 53, and the first straight line muscle 9 of opening beam 10 is connected with stretch-draw lower transverse beam 42 after passing the transverse part of this " L " shape end step 53; The inboard, vertical part of end step 53 is provided with the spring muscle 521 that can supply broken line muscle 8 to pass, the transverse part inboard of end step 53 is provided with steel plate 522, be close to steel plate 522 and be provided with reinforced mesh 523, the inboard of reinforced mesh 523 is provided with the spring muscle 521 that can supply straight line muscle 9 to pass.Force-transmitting pole end 52 is designed to step-like, so that stretch-draw top rail 41 is installed on step, satisfies the stretch-draw of case beam broken line muscle; Force-transmitting pole 5 adopts the C50 reinforced concrete structure, can satisfy case beam 52000kN stretching force and non-unstability; End jack active position adopts the thick steel plate 522 of 30mm, spring muscle 521 and four layers of reinforced mesh 523 to strengthen, and guarantees the intensity in the concrete partial pressing in 52000kN stretching force bottom; Force-transmitting pole end 52 spreads to 2.5m so that jack 6 is installed and protection support 7.
The hydraulic circuit of last jack 61 and following jack 62 adopts separate pumping plant fuel feeding respectively, constitutes respectively to go up jack oil circuit and following jack oil circuit.
The hydraulic circuit of last jack 61 as shown in figure 14, comprise first safety overflow valve 6102 that is connected between first pumping plant, 6101 oil-outs and the system oil return passage, first solenoid operated directional valve 6103 that oil-in is connected with first pumping plant, 6101 oil-outs, two actuator ports of first solenoid operated directional valve 6103 respectively with first hydraulic control one-way valve 6104, the oil-in of second hydraulic control one-way valve 6105 connects, and staggered be connected with the control port of two hydraulic control one-way valves respectively, the oil-out of first hydraulic control one-way valve 6104 is connected with the oil return opening of last jack 61, and (105 oil-out is connected with the oil-in of last jack 61 second hydraulic control one-way valve.
The hydraulic circuit of following jack 62 as shown in figure 15, comprise second safety overflow valve 6202 that is connected between second pumping plant, 6201 oil-outs and the system oil return passage, second solenoid operated directional valve 6203 that oil-in is connected with second pumping plant, 6201 oil-outs, two actuator ports of second solenoid operated directional valve 6203 respectively with the 3rd hydraulic control one-way valve 6204, the oil-in of the 4th hydraulic control one-way valve 6205 connects, and staggered be connected with the control port of two hydraulic control one-way valves respectively, the oil-out of the 3rd hydraulic control one-way valve 6204 is connected with the oil return opening of following jack 62, and the oil-out of the 4th hydraulic control one-way valve 6205 is connected with the oil-in of following jack 62.
The be connected in parallel oil-in of jack 61 on above-mentioned two platforms of the be connected in parallel oil return opening of jack 61 on two platforms of the oil-out of first hydraulic control one-way valve 6102, the oil-out of second hydraulic control one-way valve 6103; The be connected in parallel oil-in of jack 62 under above-mentioned ten platforms of the be connected in parallel oil return opening of jack 62 under ten platforms of the oil-out of the 3rd hydraulic control one-way valve 6204, the oil-out of the 4th hydraulic control one-way valve 6205.
For guaranteeing the synchronism of jack up and down, the upper and lower crossbeam of every end adopts a cover pumping plant, and full beam adopts quadruplet Superhigh Pressure Hydraulic System pumping plant altogether, and every cover pumping plant is guaranteed fuel feeding safety and fuel feeding efficient with two BZ63-10 oil pumps fuel feeding in parallel; Ten at the every end in stretch-draw lower transverse beam place, two YD600-180 types of the every end of stretch-draw top rail self-locking hydraulic jack oil top, the shunt circuit fuel feeding is adopted on each oil top, the chain loop of using hydraulic control one-way valve to form, stretch-draw safety is guaranteed in the convenient locking that realizes on the optional position; Adopt extra-high voltage magnet valve and hydraulically-controlled one-way valve, guarantee that oil does not leak under high oil pressure, control is quick on the draw, and guarantees the synchronous effect of many jack, stretch-draw and put Zhang Ping surely, safety.
Claims (1)
1, equipment for manufacturing beam base with pretensioned prestressing concrete box beam, comprise beam making bench and stretch-draw system disposed thereon, beam making bench is made of the guiding device (2) and the template system (3) that are embedded in the pedestal basis (1) in the ground and be arranged on the pedestal basis (1); The stretch-draw system by be arranged on the force-transmitting pole (5) on the pedestal basis (1) and be arranged on force-transmitting pole (5) end jack (6), be distributed in jack (6) protection on every side and support (7) and be positioned at the stretch-drawing beam formation that jack (6), protection support (7) outside, the end of force-transmitting pole (5) be the bottom protrude step-like, stretch-drawing beam is divided into the stretch-draw top rail (41) on the step that is positioned at force-transmitting pole (5) stepped end and is positioned at stretch-draw lower transverse beam (42) on the pedestal basis (1) under the step of force-transmitting pole (5) stepped end; Guiding device (2) comprises the disposable use part and the repeated use part that is arranged at outside it that is embedded in the made beam body, disposable use partly comprises the support side plate (202) that is connected by connecting bolt (203), between support side plate (202), be furnished with guide roller (201) at interval, reuse part and comprise the connecting ring (204) that is connected with support side plate (202) lower end by connecting pin (205), the lower end of connecting ring (204) is connected with bed frame (206) by fixed axis (207), and the bottom of bed frame (206) is connected with pedestal basis (1) by stone bolt (210);
The template of described template system (3) is made of beam bottom board plate, side template and Side Template, and side template and beam bottom board plate adopt fixed, and by designing requirement the reservation of beam body decrement, antiarch amount and end displacement amount is set;
It is characterized in that: described template system (3) comprises that also the bottom is embedded in big support screw (37) in the pedestal basis (1), is distributed in support screw (35) and revenue and expenditure screw mandrel (36) between the big support screw (37); The inboard of above-mentioned each screw mandrel is installed with falsework (316) with it; The end sides of beam making bench is provided with side template end joint (32), falsework (316) is provided with side template termination template supporting seat (311), and be provided with working platform support (310), on working platform support (310), be equipped with termination working platform (315); The side, middle part of beam making bench is provided with the general joint of side template (33), falsework (316) is provided with the general joint template of side template supporting seat (313), also be provided with working platform support (310), be equipped with general working platform (314) on working platform support (310), formerly the outside of Zhang Liang also is provided with case beam closure plate (312); The top on the basis, middle part, concrete operation area (102) on pedestal basis (1) is provided with beam bottom board plate (34); The arranged outside of working platform support (310) has side template railing (39).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710050510A CN100588776C (en) | 2008-01-23 | 2008-01-23 | Equipment for manufacturing beam base with pretensioned prestressing concrete box beam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710050510A CN100588776C (en) | 2008-01-23 | 2008-01-23 | Equipment for manufacturing beam base with pretensioned prestressing concrete box beam |
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| CN101220577A CN101220577A (en) | 2008-07-16 |
| CN100588776C true CN100588776C (en) | 2010-02-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677708A (en) * | 2012-03-05 | 2012-09-19 | 王振东 | Method for applying prestress by reaction beam for static load test of pile foundation and steel box girder |
| CN102649138A (en) * | 2012-05-07 | 2012-08-29 | 南通恒力重工机械有限公司 | Hydraulic driving control loop for upper roll and lower roll of forging and pressing equipment |
| CN105040985B (en) * | 2015-08-14 | 2017-06-30 | 山东大学 | The detecting system and method for stretching force under a kind of vertical finish rolling deformed bar anchor |
| CN107575031B (en) * | 2017-09-21 | 2023-01-24 | 柳州欧维姆机械股份有限公司 | Pretensioning compensation device capable of unloading force and method for pretensioning broken line reinforcement construction |
| CN109702881B (en) * | 2019-03-13 | 2021-04-23 | 秦山伟业建设集团有限公司 | Large-span pre-tensioning method T-beam bench construction method |
| CN112590000B (en) * | 2020-12-11 | 2021-09-17 | 保利长大工程有限公司 | Prestressed integral tensioning and releasing method for broken line pre-tensioning method beam plate |
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2008
- 2008-01-23 CN CN200710050510A patent/CN100588776C/en active Active
Non-Patent Citations (6)
| Title |
|---|
| 32m/900t级先张预应力混凝土箱梁整孔预制施工技术. 唐浩先.施工技术，第27卷第4期. 2007 |
| 32m/900t级先张预应力混凝土箱梁整孔预制施工技术. 唐浩先.施工技术，第27卷第4期. 2007 * |
| 客运专线先张法预应力混凝土箱梁制梁台座的设计. 王宇，孙长江.石家庄铁道学院学报(自然科学版)，第20卷第4期. 2007 |
| 客运专线先张法预应力混凝土箱梁制梁台座的设计. 王宇，孙长江.石家庄铁道学院学报(自然科学版)，第20卷第4期. 2007 * |
| 客运专线先张法预应力混凝土箱梁设计试验研究. 邓运清，徐升桥，刘玉亮.铁道勘察，第增刊期. 2007 |
| 客运专线先张法预应力混凝土箱梁设计试验研究. 邓运清，徐升桥，刘玉亮.铁道勘察，第增刊期. 2007 * |
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| CN101220577A (en) | 2008-07-16 |
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