A prefabrication construction system of bridge segment short line method

Abstract

The application discloses a kind of bridge segment short line method prefabrication construction system, system includes beam bench, several groups of support frame, translation track, mobile trolley, leveling device and survey tower, the first prefabricated beam area, matching cast-in-place area, the second prefabricated beam area, independent cast-in-place area and transfer area are divided into by the function area division of beam bench;First, N and N+2 section beam are prepared using independent cast-in-place area, then sequentially shift to the first prefabricated beam area and the second prefabricated beam area by mobile trolley, N and N+2 section beam are lofted and matched, then N+1 section beam is cast-in-place in matching cast-in-place area between the two;N+4 section beam is prepared in independent cast-in-place area simultaneously, after curing is completed;Beam segment shift is carried out, N and N+1 are moved to beam storage area by transfer area;N+2 and N+4 are moved to the first prefabricated beam area and the second prefabricated beam area, and the next cycle prefabrication is carried out.The application has high matching precision, and can greatly improve the section beam prefabrication efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of bridge engineering construction, and relates to a bridge segment short-line method construction technology, in particular to a prefabrication construction system of a bridge segment short-line method. BACKGROUND

[0002] At present, the segment prefabrication and assembly construction method is more and more used in prestressed concrete bridges in China. The core of the method is the prefabrication of segments, which is specifically divided into long-line method and short-line method. The long-line method segment prefabrication construction technology is relatively mature, and has a history of more than 20 years in China. The short-line method segment prefabrication has complex construction technology, high measurement accuracy requirement and complex linear control, and is more applied in bridge engineering in busy urban areas.

[0003] The so-called short-line method refers to the construction method of dividing a span structure into several segments, pouring the already poured segment as a matching segment to pour the next segment, and pouring the segments block by block with the same adjustable formwork. The short-line method prefabricated and assembled bridge has the characteristics of high industrialization, standardization and assembly, and has been widely used in China. Investigation shows that there is a lack of effective control method in the actual project using the short-line method segment prefabrication, and the bridge linear control accuracy cannot meet the requirements, which to some extent limits the further development of the short-line method segment prefabrication construction method.

[0004] Research shows that one of the main reasons for the inaccurate control of the linear of the short-line method construction bridge is the matching accuracy during prefabrication, construction interference and other factors. Since the short-line method prefabricates only one segment at a time for each pedestal, one of the key problems in this technology is the linear control during prefabrication, which is mainly manifested as the accurate positioning problem of the matching beam segment. The existing matching beam positioning method is mainly to use the coordinate positioning of the control point, that is, to build two fixed measurement towers, to embed a total station in the towers, and to observe the coordinates of the control points embedded on the upper surface of the matching beam segment to accurately position. The positioning method based on coordinate control of the measurement tower has many problems, such as: the settlement of the measurement tower will seriously interfere with the positioning accuracy, the human error caused by the work mistakes of the measurement personnel, the time cost caused by the repeated observation of the measurement personnel, and the high labor cost caused by the high-precision measurement of the artificial, etc. The fixed end form mainly relies on the support for fixation, and has limited stiffness and stability, and the accurate position is easily affected by the site vibration such as concrete vibration.

[0005] If the fixed end form is adjusted to the end of the prefabricated beam, the settlement influence of the measurement tower can be eliminated through the matching of the interval prefabricated beam segment, and the influence of vibration on the matching accuracy can be reduced, thereby effectively solving the above accuracy problems. SUMMARY

[0006] To solve the above problems, the present application provides a kind of prefabricated construction system of bridge segment short line method, including beam table, several groups of support frame, translation track, mobile trolley, several leveling devices and measuring tower, the present application is by the function region division of beam table, is divided into first prefabricated beam area, matching cast-in-place area, second prefabricated beam area, independent cast-in-place area and transfer area, wherein, first prefabricated beam area, matching cast-in-place area, second prefabricated beam area are sequentially arranged to constitute beam matching area;First prefabricated beam area and second prefabricated beam area are used to place the matching beam that has been prefabricated, matching cast-in-place area is used to prepare the first cast-in-place segment beam cast-in-place between two matching beams, independent cast-in-place area is used to independently cast-in-place to prepare second cast-in-place segment beam, and transfer area is used to transfer the segment beam prepared;The present application is by being connected between the first track of independent cast-in-place area and second prefabricated beam area, the second track of being penetrated through beam matching area, the third track of being connected between first prefabricated beam area and transfer area and the fourth track of being connected between transfer area and second prefabricated beam area, and circulation is formed between 5 subareas by four tracks;The segment beam is displaced by mobile trolley, so that the whole beam forming process of the present application only needs to move sequentially leveling device by external force, the rest are moved on track by mobile trolley, without the aid of external force, so that the construction efficiency of the present application is high, and two segment beams cast-in-place construction can be carried out simultaneously, and matching precision is not affected, therefore, the segment beam prefabrication efficiency of the present application can be greatly improved.

[0007] To solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0008] A prefabricated construction system of bridge segment short line method, characterized by comprising

[0009] The beam table is a site or platform for providing segment beam forming operation, and includes at least 5 subareas, i.e., first prefabricated beam area, matching cast-in-place area, second prefabricated beam area, independent cast-in-place area and transfer area, wherein, first prefabricated beam area, matching cast-in-place area, second prefabricated beam area are sequentially arranged to constitute beam matching area;First prefabricated beam area and second prefabricated beam area are used to place the matching beam that has been prefabricated, matching cast-in-place area is used to prepare the first cast-in-place segment beam cast-in-place between two matching beams, independent cast-in-place area is used to independently cast-in-place to prepare second cast-in-place segment beam, and transfer area is used to transfer the segment beam prepared;

[0010] Several groups of support frame are arranged in each subarea to support or temporarily support the segment beam.

[0011] The translation track is four tracks arranged on the beam table, including the first track connected between the independent cast-in-place area and the second prefabricated beam area, the second track penetrating through the beam matching area, the third track connected between the first prefabricated beam area and the transfer area, and the fourth track connected between the transfer area and the second prefabricated beam area, to form a circulation between the five subareas by the four tracks.

[0012] a plurality of moving trolleys, each of which is arranged on each track and is capable of moving back and forth on the track;

[0013] a plurality of leveling devices arranged at the bottom of the segmental beam for supporting the segmental beam;

[0014] a measuring tower for measuring the position of the segmental beam in the beam manufacturing matching area.

[0015] Further, each of the tracks is a double track, i.e., a group of tracks is formed by two parallel single tracks.

[0016] Further, the moving trolleys are four, each of which is arranged on each track.

[0017] Further, the leveling devices are four, each of which is arranged below each segmental beam for supporting the corresponding segmental beam.

[0018] Further, each of the support frames is a plurality of support columns arranged on both sides of the corresponding sub-area track.

[0019] Further, the moving trolleys are provided with jacking devices at the top, which facilitate lifting the corresponding segmental beam to be separated from the support frame for transfer.

[0020] Further, in the transfer area, a rotating disc is arranged on the beam manufacturing platform at the intersection of the third track and the fourth track, the third track and the fourth track at the edge of the rotating disc are disconnected, and when the rotating disc is rotated by 90 degrees or a multiple of 90 degrees, the tracks in the rotating disc can be connected with the third track and the fourth track outside; the third track and the fourth track share one moving trolley, and the moving trolley can be switched on the third track and the fourth track by rotating on the rotating disc.

[0021] Further, the formwork of the first cast-in-place segmental beam includes an inner formwork and an outer formwork, and the opposite ends of the first precast segmental beam and the second precast segmental beam serve as end formworks.

[0022] Further, the leveling device includes a lower support plate, a lifting mechanism, an upper support plate and a leveling mechanism arranged in sequence from bottom to top;

[0023] The lower support plate is used for supporting the entire device;

[0024] The bottom of the lifting mechanism is installed on the lower support plate through an X-direction motion mechanism;

[0025] The upper support plate is installed on the top telescopic end of the lifting mechanism through a Y-direction motion mechanism;

[0026] The leveling mechanism is installed on the upper support plate for supporting the segmental beam or the formwork of the segmental beam and adjusting the levelness of the segmental beam or the formwork of the segmental beam.

[0027] The segmental beam or segmental beam formwork on the leveling mechanism is adjusted to displace in the XY plane by the X-direction movement mechanism and the Y-direction movement mechanism, and the height displacement of the segmental beam or segmental beam formwork on the leveling mechanism in the Z direction is adjusted by the lifting mechanism.

[0028] Further, the X-direction movement mechanism comprises an X-direction sliding groove arranged on the lower support plate, an X-direction support plate slidingly fitted in the X-direction sliding groove, and an X-direction power mechanism driving the X-direction support plate to move, and the lifting mechanism is fixed at the bottom of the X-direction support plate;

[0029] The Y-direction movement mechanism comprises a Y-direction sliding groove arranged at the bottom of the upper support plate, a Y-direction support plate slidingly fitted in the Y-direction sliding groove, and a Y-direction power mechanism driving the Y-direction support plate to move, and the Y-direction support plate is fixedly arranged at the top of the lifting mechanism;

[0030] The X-direction sliding groove and the Y-direction sliding groove have the same structure, both comprising a sliding groove base and a sliding groove arranged in the sliding groove base, and the bottom of the X-direction support plate and the top of the Y-direction support plate are provided with sliding blocks fitted with the corresponding sliding grooves; the middle part of the sliding groove base is provided with mounting grooves on both sides;

[0031] The middle part of the X-direction support plate and the Y-direction support plate is provided with a protruding part extending into the corresponding mounting groove on both sides, and the X-direction power mechanism and the Y-direction power mechanism are translation jacks arranged between the protruding part and the corresponding mounting groove on the side.

[0032] The application also protects a segmental beam prefabrication construction method using the above prefabrication construction system, characterized by comprising the following steps:

[0033] S1, first, N number of segmental beams are prepared in the independent cast-in-place area, after curing, the N number of segmental beams are transported to the second prefabricated beam area by the moving trolley, and then the N number of segmental beams are further moved to the first prefabricated beam area by the moving trolley as the first matching beam;

[0034] S2, N+2 number of segmental beams are prepared in the independent cast-in-place area, after curing, the N+2 number of segmental beams are transported to the second prefabricated beam area by the moving trolley as the second matching beam;

[0035] S3, the first matching beam and the second matching beam are measured and positioned by the measuring equipment on the observation tower, and the lofting matching work of the two matching beams is carried out by the short line matching method;

[0036] S4, the inner formwork and the outer formwork of the N+1 number of segmental beams are installed in the matching cast-in-place area, and the N+1 number of segmental beams are prepared by cast-in-place; at the same time, the inner formwork, the outer formwork and the end form of the N+4 number of segmental beams are installed in the independent cast-in-place area, and the N+4 number of segmental beams are prepared by cast-in-place;

[0037] S5, when the N+1 segment beam and N+4 segment beam maintenance is completed, the segment beam is shifted, the N segment beam and N+1 segment beam are transferred to the transfer area by moving the trolley, and the segment beam in the transfer area is removed to the beam storage area by other hoisting equipment or vehicles;Then the N+2 segment beam is moved to the first precast beam area as the new first matching beam;The N+4 segment beam is transported to the second precast beam area as the new second matching beam, and steps S3 to S5 are cyclically executed until the precast work of all segment beams is completed.

[0038] The present application has the following advantages:

[0039] The precast construction system of the bridge segment short line method of the present application improves the matching construction of the traditional short line method construction "precast beam segment + cast-in-place segment + end face formwork" to "precast beam segment + cast-in-place segment + precast beam segment", combined with the traditional cast-in-place construction of the side "end face formwork + cast-in-place segment + end face formwork", realizes the synchronous pouring construction of double segment beams, further adopts the traditional scheme for the cast-in-place construction of the side "end face formwork + cast-in-place segment + end face formwork", without high-precision matching lofting of beam segments, and speeds up the construction speed. At the same time, the precast beam segments are matched with the cast-in-place middle beam segments, the matching lofting length is longer than that of the traditional method, there is no observation mark influence caused by construction segment vibration interference, the matching process precision is improved, the end formwork is further changed to the precast beam segment, the weight is heavier, the stability is better, and the error caused by the deformation of the end formwork support due to site vibration is reduced. The beam fabrication yard site of the present application is designed compactly, the beam segment displacement on the beam fabrication yard can be achieved by using the moving trolley, without the aid of external force, and the construction efficiency is high. In summary, the present application has high construction precision, small beam segment matching error, fast construction speed, and low modification cost, is a technical innovation of the traditional short line method precast construction process, has strong market competitiveness, and is suitable for large-area popularization and use. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a precast construction system structure schematic diagram of the bridge segment short line method in embodiment 1 of the present application.

[0041] Figure 2 is a segment beam precast construction schematic diagram of the precast construction system in embodiment 1 of the present application.

[0042] Figure 3 is a second cast-in-place segment beam construction schematic diagram of the independent cast-in-place area in embodiment 1 of the present application.

[0043] Figure 4 is a precast construction system plane layout schematic diagram in embodiment 1 of the present application.

[0044] Figure 5 is a precast construction system plane layout schematic diagram in embodiment 3 of the present application.

[0045] Figure 6 Figure 1 is a schematic diagram of the overall structure of the leveling device in an embodiment of the present application.

[0046] Figure 7 Figure 2 is a schematic diagram of the leveling device in an embodiment of the present application, with the leveling mechanism and the upper support plate removed.

[0047] Figure 8 Figure 3 is a schematic diagram of the X-direction movement mechanism and the Y-direction movement mechanism in an embodiment of the present application.

[0048] Figure 9 Figure 4 is an exploded schematic diagram of the X-direction movement mechanism and the Y-direction movement mechanism in an embodiment of the present application.

[0049] Figure 10 Figure 5 is a schematic diagram of the leveling mechanism in an embodiment of the present application.

[0050] Figure 11 Figure 6 is a schematic diagram of the segmental beam precast construction method flow in an embodiment 2 of the present application.

[0051] Figure 12 Figure 7 is a schematic diagram of the segmental beam displacement method flow in step S5 in an embodiment 2 of the present application.

[0052] 100-beam table, 101-first precast beam area, 102-matching cast-in-place area, 103-second precast beam area, 104-independent cast-in-place area, 105-transfer area, 111-first track, 112-second track, 113-third track, 114-fourth track, 121-first support frame, 122-second support frame, 123-third support frame, 124-fourth support frame, 125-fifth support frame, 130-operation temporary support, 140-L-shaped platform, 150-formwork temporary support, 160-rotating disc, 210-1st segmental beam, 220-2nd segmental beam, 230-3rd segmental beam, 250-5th segmental beam, 221-inner formwork, 222-outer formwork, 223-end formwork, 300-leveling device, 310-lower support plate, 320-lifting mechanism, 330-upper support plate, 340-leveling mechanism, 341-leveling base, 342-leveling plate, 343-leveling jack, 344-spherical recess, 345-spherical protrusion, 350-X-direction movement mechanism, 351-X-direction support plate, 352-X-direction sliding groove, 353-X-direction power mechanism, 360-Y-direction movement mechanism, 361-Y-direction support plate, 362-Y-direction sliding groove, 363-Y-direction power mechanism, 370-sliding groove base, 380-sliding groove, 390-sliding block, 391-protrusion part, 392-translation jack, 400-measuring tower, 410-first mobile trolley, 420-second mobile trolley, 430-third mobile trolley, 440-fourth mobile trolley. DETAILED DESCRIPTION

[0053] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0054] In the description of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] As shown in Figures 1 to 4 Embodiment 1: The present application provides a prefabricated construction system for bridge segment short line method, which comprises

[0057] The beam manufacturing platform 100 is a site or platform for providing beam manufacturing operation of the segment beam, which comprises at least 5 sub-areas, namely a first prefabricated beam area 101, a matching cast-in-place area 102, a second prefabricated beam area 103, an independent cast-in-place area 104 and a transfer area 105, wherein the first prefabricated beam area 101, the matching cast-in-place area 102 and the second prefabricated beam area 103 are sequentially arranged to form a beam matching area; the first prefabricated beam area 101 and the second prefabricated beam area 103 are respectively used for placing the matching beams (segment beams) which have been prefabricated, the matching cast-in-place area 102 is used for the first cast-in-place segment beam which is cast in place between two matching beams, the independent cast-in-place area 104 is used for the second cast-in-place segment beam which is independently cast in place, and the transfer area 105 is used for transferring the prepared segment beam or leveling device;

[0058] The outer side of the first prefabricated beam area 101 of the beam manufacturing platform 100 is a transfer road for parking the vehicle transferring the segment beam;

[0059] Five sets of support frames are set in each sub-zone to support or temporarily support the segmental beams. They are the first support frame 121 set in the first precast beam zone, the second support frame 122 set in the matching cast-in-place zone 102, the third support frame 123 set in the second precast beam zone 103, the fourth support frame 124 set in the transfer zone 105, and the fifth support frame 125 set in the independent cast-in-place zone 104, which are used to support the segmental beams of each sub-zone respectively.

[0060] The translation track consists of four tracks set on the beam-making platform 100, including a first track 111 connecting the independent cast-in-place area 104 and the second precast beam area 103, a second track 112 passing through the beam-making matching area, a third track 113 connecting the first precast beam area 101 and the transfer area 105, and a fourth track 114 connecting the transfer area 105 and the second precast beam area 103. The four tracks form a grid pattern with loops, and the leveling device 300 can form a cyclic movement between the five sub-areas through the four tracks.

[0061] Three mobile trolleys are set on each track and can move back and forth on the track. The one on the first track 111 is called the first mobile trolley 410, the one on the second track 112 is called the second mobile trolley 420, and the one on the third track 113 is called the third mobile trolley 430.

[0062] Four leveling devices (300mm each) are installed at the bottom of the segmental beam to support it.

[0063] The measuring tower 400 is used to perform positioning measurements on the segmental beams in the beam matching area.

[0064] In the prefabricated construction system of the present invention, the formwork for constructing the first cast-in-place segment beam includes an inner formwork 221 and an outer formwork 222, and the opposite ends of the first prefabricated segment beam and the second prefabricated segment beam are used as end formwork.

[0065] The formwork for the second cast-in-place segment beam is a traditional formwork, including an inner formwork 221, an outer formwork 222, and end formwork 223 located at both ends. The end formwork 223 is installed on the beam-making platform 100 of the independent cast-in-place area 104 using a temporary formwork support 150. The outline shape of the end formwork 223 is the same as the end shape of the segment beam, and there are pressed-out convex and concave grooves on the surface for generating convex and concave teeth and prestressed duct holes in the precast beam segment.

[0066] As a preferred embodiment, the distribution of the beam fabrication platform 100 area is set as follows:

[0067] The beam manufacturing platform 100 is first divided into two regions in the transverse direction, the left region is a beam manufacturing matching region, and the right region is a cast-in-place region transfer region 105, the beam manufacturing matching region on the left is divided into a first precast beam region 101, a matching cast-in-place region 102, and a second precast beam region 103 in the longitudinal direction; the cast-in-place region transfer region 105 on the right is sequentially a transfer region 105 and an independent cast-in-place region 104, and the independent cast-in-place region 104 and the second precast beam region 103 are aligned, and the transfer region 105 and the first precast beam region 101 are aligned, so that after being arranged according to the above track function layout principle, the four tracks form a loop-shaped track.

[0068] As a preferred embodiment, each of the tracks is a double track, that is, a group of tracks is formed by two parallel single tracks. The stability of the moving trolley moving on the track can be improved.

[0069] As a preferred embodiment, the moving trolley is provided with a jacking device at the top, which facilitates lifting the corresponding segment beam from the support frame for transfer. When the segment beam is moved by the moving trolley, the jacking device lifts the segment beam and the leveling device 300 at the bottom together to separate from the support frame below, and then moves along the track; when the destination is reached, the jacking device is lowered, and the segment beam and the lowered leveling device 300 are lowered together on the support frame. This method can also transfer the leveling device 300 alone.

[0070] It should be noted that the type of the moving trolley of the present application is not limited, and can be any form of track trolley, as long as the top has a jacking device, and the jacking device is generally a hydraulic cylinder. Generally, in order to facilitate control, the moving trolley is preferably an automatic control or remote control type track trolley. If automatic control is used, pre-set action type, walking distance, etc. can be used for full-automatic control.

[0071] Embodiment 2: As shown in Figure 11 The segment beam precast construction method using the above precast construction system of the present application is as follows:

[0072] S1, as Figure 11As shown in the middle A, in the initial state, the first prefabricated beam area 101, the matching cast-in-place area 102, the second prefabricated beam area 103, and the support frame provided in the transfer area 105 are all without leveling device 300, the leveling device 300 is hoisted on the fifth support frame 125 of the independent cast-in-place area 104, the formwork is installed on the leveling device 300 hoisted (using external hoisting equipment) on the fifth support frame 125, and the N number segment beam (N=1) is prepared in the independent cast-in-place area 104, after curing, the first moving trolley 410 is used to transport the No. 1 segment beam 210 and the leveling device 300 at the bottom of the No. 1 segment beam 210 together to the second prefabricated beam area 103, and then the second moving trolley 420 is used to further move the No. 1 segment beam 210 and the leveling device 300 at the bottom of the No. 1 segment beam 210 together to the first prefabricated beam area 101, and the No. 1 segment beam 210 is used as the first matching beam;

[0073] S2, as shown in Figure 11 As shown in the middle B, the leveling device 300 is hoisted again on the fifth support frame 125 of the independent cast-in-place area 104, and the N+2 number segment beam (N=1) is prepared in the independent cast-in-place area 104, after curing, the first moving trolley 410 is used to transport the No. 3 segment beam 230 and the leveling device 300 at the bottom of the No. 3 segment beam 230 together to the second prefabricated beam area 103, and the No. 3 segment beam 230 is used as the second matching beam;

[0074] S3, the first matching beam (No. 1 segment beam 210) and the second matching beam (No. 3 segment beam 230) are measured and positioned by using the measuring equipment on the observation tower, and the lofting matching work of the two matching beams is carried out by using the short line matching method;

[0075] S4, as shown in Figure 11 As shown in the middle C, an external hoisting equipment is used to hoist a leveling device 300 on the second support frame 122 of the matching cast-in-place area 102, and the inner formwork and the outer formwork of the N+1 number segment beam (N=1) are installed on the leveling device 300 of the matching cast-in-place area 102, and the No. 2 segment beam 220 is prepared by casting; meanwhile, a new leveling device 300 is hoisted on the fifth support frame 125 of the independent cast-in-place area 104, and the inner formwork 221 and the outer formwork 222 of the N+4 number segment beam (N=1) and the end form are installed, and the No. 5 segment beam 250 is prepared by casting, at this time, four leveling devices 300 have been used, and the four leveling devices 300 are recycled;

[0076] S5, when the No. 2 segment beam 220 and the No. 5 segment beam 250 are completed, the segment beam is displaced, the No. 1 segment beam 210 and the No. 2 segment beam 220 are transferred to the vicinity of the transfer road outside the first precast beam area 101 by the moving trolley, and are transferred to the beam storage area by the transfer vehicle; the leveling device 300 lowered by the No. 1 segment beam 210 and the No. 2 segment beam 220 are sequentially used in circulation by the moving trolley through the third track 113 and the fourth track 114; then the No. 3 segment beam 230 is moved to the first precast beam area 101 as the first matching beam; the No. 5 segment beam 250 is transported to the second precast beam area 103 as the second matching beam. Steps S3 to S5 are executed in circulation until all segment beam precast work is completed.

[0077] As shown in Figure 4 , 11 and 12, in step S5, the specific method of segment beam displacement is as follows:

[0078] S5.1, transfer of the No. 1 segment beam 210, the initial state is shown in Figure 11 A, first, the No. 1 segment beam 210 in the first precast beam area 101 and the leveling device 300 at the bottom thereof are moved together along the second track 112 to the vicinity of the transfer road by the second moving trolley 420, the No. 1 segment beam 210 is hoisted onto the transfer vehicle by the hoisting equipment on the external hoisting equipment or the transfer vehicle, and is transferred to the beam storage area by the transfer vehicle; after the No. 1 segment beam 210 is hoisted away, the second moving trolley 420 returns to the first precast beam area 101 with the leveling device 300 thereon, and places the leveling device 300 on the first support frame 121 (the placement action can be completed by the recovery jacking device of the moving trolley), the second moving trolley 420 passes through the middle of the first support frame 121 from below to below the second support frame 122, preparing to transfer the No. 2 segment beam 220; at the same time, the third moving trolley 430 moves to below the first support frame 121, and transfers the leveling device 300 thereon to the fourth support frame 124 in the transfer area, and the result is shown in Figure 12 A;

[0079] S5.2, transfer of the No. 2 segment beam 220, the No. 2 segment beam 220 in the matching cast-in-place area 102 and the leveling device 300 at the bottom thereof are moved together to the first precast beam area 101 by the second moving trolley 420, and are continuously moved to the vicinity of the transfer road along the second track 112, and are then removed by the transfer vehicle, after which the second moving trolley 420 returns to the first precast beam area 101 with the leveling device 300 thereon, and places the leveling device 300 on the first support frame 121, and the second support frame 122 in the matching cast-in-place area 102 is empty, and the result is shown in Figure 12 B;

[0080] S5.3, the first transfer of the segment beam 230 no. 3, through the second mobile trolley 420 from below the second support frame 122 to pass to below the third support frame 123, the jacking device on the second mobile trolley 420 jacks up the segment beam 230 no. 3 of the second precast beam area 103 and the leveling device 300 at the bottom thereof together, and moves to the matching cast-in-place area 102 to pause, temporarily places the segment beam 230 no. 3 and the leveling device 300 at the bottom thereof on the second support frame 122, and the second precast beam area 103 has a vacancy, as shown in Figure 12 C in the middle;

[0081] S5.4, the transfer of the segment beam 250 no. 5, through the first mobile trolley 410 to move the segment beam 250 no. 5 of the independent cast-in-place area 104 and the leveling device 300 at the bottom thereof together to the second precast beam area 103 as the second matching beam, the independent cast-in-place area 104 has a vacancy (without the leveling device 300); then through the fourth mobile trolley 440 to transfer the leveling device 300 on the fourth support frame 124 of the transfer area 105 to the fifth support frame 125 of the independent cast-in-place area 104, in preparation for the next round of segment beam preparation of no. 7, as shown in Figure 12 D in the middle;

[0082] S5.5, the second transfer of the segment beam 230 no. 3, first through the third mobile trolley 430 to move the leveling device 300 on the first support frame 121 to the fourth support frame 124 of the transfer area 105 for temporary storage; then through the second mobile trolley 420 to move the segment beam 230 no. 3 of the matching cast-in-place area 102 and the leveling device 300 at the bottom thereof together to the first support frame 121 of the first precast beam area 101, the matching cast-in-place area 102 has a vacancy, as shown in Figure 12 E in the middle;

[0083] S5.6, through external hoisting equipment to hoist the leveling device 300 of the transfer area 105 to the matching cast-in-place area 102, in preparation for the next round of cast-in-place preparation of no. 4 segment, as shown in Figure 12 F in the middle, that is Figure 11 the state of B in the middle.

[0084] After all the segment beams are displaced, a new round of cast-in-place preparation of no. 4 segment beam and no. 7 segment beam can be carried out.

[0085] Example 3: As a preferred embodiment, other parts are the same as example 2, the difference is that the steps S5.1 and S5.2 of the segment beam displacement in step S5 are different, since it takes a certain time and process to hoist the segment beam onto the transfer vehicle, in order to improve the transfer efficiency, the segment beam no. 1 210 and the segment beam no. 2 220 can be hoisted onto the transfer vehicle (two transfer vehicles or the same larger transfer vehicle) at the same time, the specific improvement is as follows:

[0086] In step S5.1, when the No. 1 segment beam 210 is being transferred, the third moving trolley 430 is used to transfer the No. 1 segment beam 210 of the first precast beam area 101 and the leveling device 300 at the bottom of the No. 1 segment beam 210 together along the third track 113 to the fourth support frame 124 of the transfer area 105; then, in the same way as in the original step S5.1, the fourth moving trolley 440 is used to move the No. 1 segment beam 210 of the transfer area 105 and the leveling device 300 at the bottom of the No. 1 segment beam 210 together along the fourth track 114 to the vicinity of the transfer road, the No. 1 segment beam 210 is hoisted onto the transfer vehicle by the hoisting equipment on the transfer vehicle or external hoisting equipment, and is transferred to the beam storage area by the transfer vehicle; the fourth moving trolley 440 returns to the fourth support frame 124 of the transfer area 105 with the leveling device 300;

[0087] In step S5.2, after the No. 1 segment beam 210 is transferred away from the first precast beam area 101 in step S5.1, the transfer of the No. 2 segment beam 220 can be started, the No. 2 segment beam 220 of the matching cast-in-place area 102 and the leveling device 300 at the bottom of the No. 2 segment beam 220 are moved together to the first precast beam area 101 by the second moving trolley 420, and are continuously moved to the vicinity of the transfer road along the second track 112, and are then taken away by the transfer vehicle, after which the second moving trolley 420 returns to the first precast beam area 101 with the leveling device 300 thereon, and places the leveling device 300 thereon onto the first support frame 121, and the second support frame 122 of the matching cast-in-place area 102 is empty; in this way, the No. 1 segment beam 210 and the No. 2 segment beam 220 can be hoisted and loaded onto the vehicle at the same time, saving time.

[0088] Embodiment 4: other than the same as in Embodiment 1, as shown in Figure 5 In the transfer area 105, the third track 113 and the fourth track 114 intersect at the beam manufacturing table 100, and the rotating disc 160 is arranged on the beam manufacturing table 100, the third track 113 and the fourth track 114 are disconnected at the edge of the rotating disc 160, and the tracks in the rotating disc 160 can be connected to the third track 113 and the fourth track 114 on the outside by rotating the rotating disc 160 by 90 degrees or a multiple of 90 degrees; the third track 113 and the fourth track 114 share one moving trolley, and the moving trolley can be switched between the third track 113 and the fourth track 114 by rotating on the rotating disc 160, so that one moving trolley can be saved, greatly saving the cost.

[0089] As a specific embodiment, each group of support frames is a plurality of support columns arranged on both sides of the corresponding sub-area track, and in this embodiment, there are four support columns. In fact, the number of support columns is not limited, and the support columns are distributed on both sides of the track without affecting the operation of the moving trolley.

[0090] As a preferred embodiment, the transfer zone 105 is provided with an operation temporary support 130, and an L-shaped platform 140 is arranged on the operation temporary support 130, which is used for operating the segmental beam of the five sub-zones, such as measuring and error elimination during the measuring process, manual observation review and the like for the prefabricated segments, and template installation, observation point placement and the like for the cast-in-place segments.

[0091] It should be noted that the measuring tower 400 is the same as the measuring tower 400 used in the conventional short-line method construction, and a total station instrument can be used for measurement.

[0092] The pouring construction system uses the same equipment as the conventional short-line method construction.

[0093] The segmental beam is a prestressed reinforced concrete structure, which is mostly a box girder section, and a convex tooth block is arranged on one side end face, and a concave tooth pit is arranged on the other side end face, which are engaged with the tooth blocks (tooth pits) of the adjacent prefabricated beam segments, and are connected in series by prestressed steel strands to form an integral structure. Observation marks for position relationship matching are arranged on the top of the segmental beam, and are arranged in rows around the centerline and contour line of the beam segment.

[0094] As a specific embodiment, the leveling device 300 includes

[0095] The leveling device 300 includes a lower support plate 310, a lifting mechanism 320, an upper support plate 330 and a leveling mechanism 340 arranged in sequence from bottom to top.

[0096] The lower support plate 310 is used to support the entire device by being placed on a mobile trolley or a support frame.

[0097] The bottom of the lifting mechanism 320 is installed on the lower support plate 310 through an X-direction motion mechanism 350.

[0098] The upper support plate 330 is installed on the top telescopic end of the lifting mechanism 320 through a Y-direction motion mechanism 360.

[0099] The leveling mechanism 340 is installed on the upper support plate 330, which is used to support the segmental beam and adjust the levelness of the segmental beam.

[0100] The segmental beam or segmental beam formwork on the leveling mechanism 340 is adjusted in displacement in the XY plane through the X-direction motion mechanism 350 and the Y-direction motion mechanism 360, and the height displacement of the segmental beam or segmental beam formwork on the leveling mechanism 340 in the Z direction is adjusted through the lifting mechanism 320, so that the leveling mechanism 340 moves in the three-dimensional space relative to the lower support plate 310, and the segmental beam or segmental beam formwork supported thereby moves in the three-dimensional space.

[0101] As an improved embodiment, as Figure 6 and Figure 7As shown, the X-direction movement mechanism 350 includes an X-direction sliding groove 352 arranged on the lower support plate 310, an X-direction support plate 351 slidingly fitted in the X-direction sliding groove 352, and an X-direction power mechanism 353 driving the X-direction support plate 351 to move. The lifting mechanism 320 is fixed at the bottom of the X-direction support plate 351.

[0102] As an improved embodiment, the Y-direction movement mechanism 360 includes a Y-direction sliding groove 362 arranged at the bottom of the upper support plate 330, a Y-direction support plate 361 slidingly fitted in the Y-direction sliding groove 362, and a Y-direction power mechanism 363 driving the Y-direction support plate 361 to move. The Y-direction support plate 361 is fixedly installed at the top of the lifting mechanism 320.

[0103] As an improved embodiment, as shown in Figures 7 to 9 As shown, the X-direction sliding groove 352 and the Y-direction sliding groove 362 have the same structure, both including a sliding groove base 370 and a sliding groove 380 arranged in the sliding groove base 370. The sliding groove base 370 is fixed at the top of the lower support plate 310 or the bottom of the upper support plate 330. The bottom of the X-direction support plate 351 and the top of the Y-direction support plate 361 are provided with sliding blocks 390 fitted with the corresponding sliding grooves 380. The middle part of the sliding groove base 370 is provided with mounting grooves on both sides.

[0104] As shown in Figure 8 The middle part of the X-direction support plate 351 and the Y-direction support plate 361 is provided with a protruding part 391 extending into the corresponding mounting groove on both sides. The X-direction power mechanism 353 and the Y-direction power mechanism 363 are translation jacks 392 arranged between the protruding part 391 and the corresponding mounting groove on the side.

[0105] As an improved embodiment, a lubricating layer or a rolling body (such as a ball or a roller) is arranged between the sliding groove 380 and the sliding block 390 to reduce friction. The lubricating layer or the rolling body can greatly reduce the translation resistance of the segment beam or the segment beam template, improve the translation accuracy, and thus reduce the difficulty.

[0106] As an improved embodiment, as shown in Figure 8 and Figure 9As shown in the figure, the front and back sides of the protruding part 391 on each side of the sliding groove 380 are provided with a translation jack 392, and the sliding block 390 is driven to slide in the sliding groove 380 through the synchronous and opposite (one contraction and the other elongation) expansion and contraction action of the two translation jacks 392 on the front and back sides of the protruding part 391, and the corresponding position is adjusted. Through the synchronous and opposite motion of the two translation jacks 392, the stability of the X-direction motion mechanism 350 and the Y-direction motion mechanism 360 in the non-moving state can be greatly improved through the cooperation of the lubricating layer or the rolling body, which not only meets the requirement of low resistance for the translation of the segmental beam or the segmental beam formwork, but also prevents the segmental beam from automatically deviating under the action of the self weight or external force.

[0107] As an improved embodiment, the lifting mechanism 320 is a lifting jack.

[0108] As an improved embodiment, as shown in the figure, Figure 6 and Figure 7 As shown in the figure, the lifting mechanism 320, the X-direction motion mechanism 350 and the Y-direction motion mechanism 360 between the upper support plate 330 and the lower support plate 310 are multiple, and the multiple lifting jacks are arranged in a row-column type array between the lower support plate 310 and the upper support plate 330, each row of lifting mechanisms 320 is installed on the same X-direction support plate 351, and each column of lifting mechanisms 320 is installed on the same Y-direction support plate 361.

[0109] By arranging the array type lifting mechanism 320 between the X-direction support plate 351 and the Y-direction support plate 361, the X-direction motion and the Y-direction motion are not interfered with each other, and the translation driving can be performed in this direction through multiple motion mechanisms, so that the driving force is prevented from being insufficient, and the translation precision is improved.

[0110] As an improved embodiment, as shown in the figure, Figure 6 and Figure 10 As shown in the figure, the leveling mechanism 340 comprises a leveling base 341, a leveling plate 342 and a plurality of leveling jacks 343, the leveling base 341 is fixed on the upper support plate 330, the leveling plate 342 is installed on the leveling base 341 through a plurality of evenly distributed leveling jacks 343 around the leveling plate 342, the leveling jacks 343 are arranged in the vertical direction, and the top of the leveling jacks 343 is connected with the leveling plate 342 through a spherical hinge, and the leveling plate 342 supports the formwork or the segmental beam.

[0111] The leveling mechanism 340 is arranged in the application to prevent the contact level between the bottom contact surface of the segmental beam and the upper support plate 330 from being insufficient, and the overall level of the segmental beam can be ensured after adjustment by the leveling mechanism 340.

[0112] As an improved embodiment, the leveling base 341 is provided with a spherical groove 344 in the middle, and the leveling plate 342 is provided with a spherical protrusion 345 matched with the spherical groove 344, so that a large spherical pair is formed between the leveling base 341 and the leveling plate 342 for force support, and the force borne by the leveling jack 343 can be greatly shared through the spherical pair, thereby prolonging the service life of the leveling jack 343.

[0113] The application also provides a method for moving a segmental beam in multiple directions with high precision by using the leveling device 300, comprising the following steps:

[0114] Step 1: initialization of the leveling device 300, before use, the leveling device 300 is initialized, and the leveling mechanism 340, the lifting mechanism 320, the X-direction movement mechanism 350 and the Y-direction movement mechanism 360 of the leveling device 300 are reset to the initial state;

[0115] Specifically, the leveling jack 343 and the lifting jack are in the retracted position, and the translation jacks 392 of the X-direction movement mechanism 350 and the Y-direction movement mechanism 360 are in the middle position,

[0116] Step 2: then install the formwork on the leveling device 300, and adjust the levelness of the formwork by the leveling device 300, specifically: start the X-direction movement mechanism 350 and the Y-direction movement mechanism 360 respectively, and adjust the displacement of the segmental beam formwork in the X direction and the Y direction in the horizontal plane, and start the lifting mechanism 320 to adjust the height of the segmental beam formwork, so as to realize the displacement adjustment of the segmental beam formwork in three-dimensional space, and reach the design position requirement, and then cast in place;

[0117] Step 3: after the segmental beam is cured and maintained, the formwork is removed, so that the leveling plate 342 directly contacts the bottom of the segmental beam;

[0118] Step 4: the leveling device 300 moves to the corresponding position with the segmental beam to match the beam segment construction, and when it is necessary to adjust the position and levelness of the segmental beam again, the method in step 2 is used for adjustment again.

[0119] The above embodiments are only used to illustrate the application, but not to limit the application. Although the application is described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the application do not deviate from the spirit and scope of the application, and should be covered in the scope of the claims of the application.

Claims

1. A precast construction system for bridge segment short line method, characterized in that: The utility model relates to a prefabricated beam production platform, which comprises a beam production platform, a plurality of support frames, a plurality of leveling devices, a plurality of moving trolleys and a measuring tower. The beam production platform comprises at least five sub-zones, i.e., a first prefabricated beam zone, a matching cast-in-place zone, a second prefabricated beam zone, an independent cast-in-place zone and a transfer zone. The first prefabricated beam zone, the matching cast-in-place zone and the second prefabricated beam zone are sequentially arranged to form a beam matching zone. The first prefabricated beam zone and the second prefabricated beam zone are used to place matching beams that have been prefabricated. The matching cast-in-place zone is used to cast in place a first cast-in-place segmental beam between two matching beams. The independent cast-in-place zone is used to independently cast in place a second cast-in-place segmental beam. The transfer zone is used to transfer the prepared segmental beam or leveling device.

2. The precast construction system for short-line method of bridge segment according to claim 1, characterized in that: Each of the support frames is arranged on both sides of the track in the corresponding sub-zone.

3. The precast construction system for short-line method of bridge segmental construction according to claim 2, wherein: The moving trolleys are arranged on the four tracks.

4. The precast construction system for short-line bridge segments of claim 3, wherein: The leveling devices are arranged at the bottom of the segmental beam to support the segmental beam.

5. The precast construction system for short-line bridge segments of claim 4, wherein: The measuring tower is used to measure the position of the segmental beam in the beam matching zone.

6. The precast construction system for short-line bridge segments of claim 4, wherein: Each of the tracks is a double track formed by two parallel single tracks.

7. The precast construction system for short-line method of bridge segmental construction as claimed in claim 3, wherein: The moving trolleys are arranged on each of the tracks.

8. The precast construction system for short-line bridge segments of claim 3, wherein: The leveling devices are arranged below each of the segmental beams to support the corresponding segmental beam.

9. The precast construction system for short-line method of bridge segmental construction as claimed in claim 3, wherein: Each of the support frames is a plurality of support columns arranged on both sides of the track in the corresponding sub-zone. The moving trolleys are provided with a jacking device at the top to facilitate lifting the corresponding segmental beam to separate from the support frame for transfer. In the transfer zone, a rotating disc is arranged on the beam production platform at the intersection of the third track and the fourth track. The third track and the fourth track are disconnected at the edge of the rotating disc. When the rotating disc is rotated by 90 degrees or a multiple of 90 degrees, the track in the rotating disc can be connected to the third track and the fourth track. The formwork of the first cast-in-place segmental beam comprises an inner formwork and an outer formwork. The leveling device comprises a lower support plate, a lifting mechanism, an upper support plate and a leveling mechanism arranged in sequence from bottom to top. The lower support plate is used to support the entire device. The lifting mechanism is installed on the lower support plate through an X-direction motion mechanism at the bottom. The upper support plate is installed on the top telescopic end of the lifting mechanism through a Y-direction motion mechanism. The leveling mechanism is installed on the upper support plate to support the segmental beam or the formwork of the segmental beam and adjust the levelness of the segmental beam or the formwork of the segmental beam. The segmental beam or the formwork of the segmental beam on the leveling mechanism is adjusted in displacement in the XY plane through the X-direction motion mechanism and the Y-direction motion mechanism. The height displacement of the segmental beam or the formwork of the segmental beam on the leveling mechanism in the Z direction is adjusted through the lifting mechanism.

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