A method for quickly replacing and closing the outer formwork during the construction of continuous beams

Abstract

The present invention discloses a method for quickly replacing and closing the outer formwork during the construction of continuous beams, which includes the following steps: disconnect the connection between the top side plate unit and the adjustment section side plate unit, and move the outer formwork flange template part and the top side plate unit outward; disconnect the connection between the adjustment section side plate unit and the bottom side plate unit, lift the adjustment section side plate unit away, and hoist the adjustment section side plate unit with reduced height to the replacement position; connect the newly replaced adjustment section side plate unit with the bottom side plate unit, make the newly replaced adjustment section side plate unit fit with the top side plate unit, and complete the connection and fixation of the newly replaced adjustment section side plate unit and the top side plate unit; according to the adjustment of the angle and height of the bottom formwork, adjust the angle and height of the outer formwork web part and the outer formwork flange template part to match the angle and height of the designed position, and complete the replacement and closing of the outer formwork. The method of the present invention can realize the quick replacement and closing of the outer formwork, improve the operation efficiency, and reduce the risk of high-altitude operation.

Description

Technical Field

[0001] The present invention relates to the technical field of continuous beam pouring construction, and particularly to a method for quickly replacing and closing the outer formwork during the construction of continuous beams. Background Art

[0002] As is well known, ordinary concrete frame structures cannot meet the needs of various functions due to their small span and dense column grids, while prestress can effectively solve the above problems. Prestressed concrete can give full play to the efficiency of materials. Under the same conditions, it has a smaller cross-section, lighter weight, greater stiffness, better crack resistance and durability than ordinary reinforced concrete members, can effectively control the deflection of the structure (even without deflection), saves 40 - 50% of steel and 20 - 40% of concrete, and is particularly more economical in large-span structures. Therefore, at present, prestressed concrete continuous beam bridges are more and more widely used and have now become one of the core bridge types used in bridge engineering construction. The cantilever casting method is a commonly used method for continuous beam bridge construction, but its construction process is complex and there are still many construction technical problems to be solved. In the existing cantilever casting hanging baskets for continuous beams, the more manual assistance is used, the longer the construction period of cantilever casting is, which seriously affects the overall project duration. At the same time, due to manual operation, it is difficult to control the construction quality.

[0003] Taking the outer formwork as an example, in the traditional hanging basket style, the outer formwork, as one of the main supporting formwork components, is responsible for supporting the vertical load pressure and the side formwork pressure of the box chamber during the pouring of the concrete of the continuous beam flange plate; generally, a formwork structure form supported by a steel panel and a profiled steel back rib truss can be repeatedly used many times under the condition of low deformation. After each continuous beam segment is poured and reaches a certain strength, the formwork of the continuous beam needs to be removed for the use of the next segment of continuous beam pouring.

[0004] The traditional process for removing the external formwork is as follows: Since the traditional side formwork is supported by sliding beams and simply supported by front and rear slings, when the external formwork needs to be lowered as a whole after the segment construction is completed, the external formwork is separated from the concrete surface by its own weight. However, due to the influence of the bonding force of the concrete surface, it is often necessary to manually pry the external formwork away from the concrete structure, and then use the sliding beam to move the external formwork forward. The above removal method has the following defects: (1) Manually prying the external formwork for replacement can easily cause the formwork to fall off instantly, causing impact on the hanging basket components; (2) Since the removal relies on manual work, and manual work depends on the construction personnel's operating level and familiarity, it has a certain impact on construction efficiency; (3) The external formwork is mostly removed by removing the entire formwork downward. The height difference of the segment beam in a large span continuous beam is large, and the bottom often exceeds the bottom formwork by several meters. In the construction of roads and bridges, due to the limited bottom space, it needs to be removed on site, which makes the construction work extremely inconvenient and poses a great risk. Therefore, it is necessary to study a rapid method for the outer formwork of continuous beams to reduce the reliance on manual operation, reduce construction risks, improve construction efficiency, and protect the edges and corners of continuous beams. Summary of the invention

[0005] The invention discloses a method for quickly replacing and closing outer molds in continuous beam construction. The outer mold device can be replaced by adopting left and right telescopic parts and a supporting portal structure that can be telescoped up and down, thereby improving operation efficiency and reducing the risk of high-altitude operations.

[0006] To achieve the above object, the technical solution of the present invention is:

[0007] A method for quickly replacing and closing an outer mold in continuous beam construction, wherein: the outer mold includes an outer mold web portion and an outer mold flange mold portion, the outer mold web portion includes at least three detachable side plate units, which are divided into a top side plate unit, an adjustment section side plate unit and a bottom side plate unit, and the adjustment section side plate unit is used to be replaced according to the change of the continuous beam height;

[0008] The specific steps include: releasing the connection between the top side panel unit and the adjustment section side panel unit, and moving the outer mold flange template part and the top side panel unit outward; releasing the connection between the adjustment section side panel unit and the bottom side panel unit, lifting the adjustment section side panel unit away, and lifting the height-reduced adjustment section side panel unit to the replacement position; connecting the newly replaced adjustment section side panel unit with the bottom side panel unit, so that the newly replaced adjustment section side panel unit fits with the top side panel unit, and completing the connection and fixation of the newly replaced adjustment section side panel unit with the top side panel unit; adjusting the angle and height of the outer mold web part and the outer mold flange template part according to the adjustment of the bottom mold angle and height to match the angle and height of the designed position, and completing the replacement and mold closing of the outer mold;

[0009] Or: According to the adjustment of the bottom die angle, adjust the angles of the outer die web part and the outer die flange template part to match the designed angle; release the connection between the top side plate unit and the adjustment section side plate unit, and move the outer die flange template part and the top side plate unit outward; release the connection between the adjustment section side plate unit and the bottom side plate unit, lift the adjustment section side plate unit off, and hoist the adjustment section side plate unit with reduced height to the replacement position; connect the newly replaced adjustment section side plate unit with the bottom side plate unit, make the newly replaced adjustment section side plate unit fit with the top side plate unit, and complete the connection and fixation of the newly replaced adjustment section side plate unit and the top side plate unit; according to the adjustment of the bottom die height, adjust the heights of the outer die web part and the outer die flange template part to match the height of the designed position, and complete the replacement and mold closing of the outer die.

[0010] Further, an outer die support mechanism is arranged on the outer side of the outer die web part. Two groups of the outer die support mechanisms are symmetrically arranged on the outer side of the outer die. Each group of the outer die support mechanisms includes a support gantry, a top supporting support, an outer die sliding part, a left and right telescopic part, and a bottom support unit. The support gantry is arranged on the outer side of the outer die web part and is a vertically telescopic structure, with at least 2 rows arranged; a top supporting support is arranged on the support gantry, and the top supporting support is provided with horizontally arranged tracks. An outer die sliding part that can move horizontally is arranged in the tracks, and the outer die sliding part is used to support the outer die flange template part above it. The left and right telescopic parts are arranged on one side of the support gantry and / or the top supporting support facing the outer die web part, and the other end is connected to the outer die web part; a longitudinal bottom support unit is arranged below the support gantry. The bottom support unit includes a bottom support longitudinal beam and an angle adjuster. The bottom support longitudinal beam is connected to the lower end of the support gantry. The upper end of the angle adjuster is connected to one side of the bottom support longitudinal beam, and the lower end extends vertically and is connected to the bottom load-bearing mechanism; a rotatable hinge is arranged on the other side of the bottom support longitudinal beam and is connected to the bottom load-bearing mechanism;

[0011] The specific steps include: releasing the connection between the top side plate unit and the adjusting section side plate unit, contracting the left and right telescopic members connected to the top supporting member, and moving the outer form flange template part and the top side plate unit outward by relying on the outer form sliding member; releasing the connection between the adjusting section side plate unit and the bottom side plate unit, lifting the adjusting section side plate unit, and hoisting the adjusting section side plate unit with reduced height to the replacement position; connecting the newly replaced adjusting section side plate unit with the bottom side plate unit, adjusting the angle upward of the left and right telescopic members connected to the bottom side plate unit and / or adjusting the height of the support gantry, so that the newly replaced adjusting section side plate unit fits with the top side plate unit, completing the connection and fixation of the newly replaced adjusting section side plate unit and the top side plate unit, adjusting the angle and height of the bottom load-bearing mechanism and the height of the support gantry, contracting the angle adjusting member at the rear part of the bottom support longitudinal beam, so that the elevation angle and height of the bottom formwork match the elevation angle and height of the bottom plate of the designed beam section, and the support gantry returns to the vertical state, and the angle and height of the outer form flange template part match the position of the wing plate of the designed beam section, completing the replacement and closing of the outer formwork.

[0012] Or: adjusting the angle of the bottom load-bearing mechanism to make the elevation angle of the bottom formwork match the elevation angle of the bottom plate of the designed beam section, adjusting the angle adjusting member to make the support gantry return to the vertical state; releasing the connection between the top side plate unit and the adjusting section side plate unit, contracting the left and right telescopic members connected to the top supporting member, and moving the outer form flange template part and the top side plate unit outward by relying on the outer form sliding member; releasing the connection between the adjusting section side plate unit and the bottom side plate unit, lifting the adjusting section side plate unit, and hoisting the adjusting section side plate unit with reduced height to the replacement position; connecting the newly replaced adjusting section side plate unit with the bottom side plate unit, adjusting the angle upward of the left and right telescopic members connected to the bottom side plate unit and / or adjusting the height of the support gantry, so that the newly replaced adjusting section side plate unit fits with the top side plate unit, completing the connection and fixation of the newly replaced adjusting section side plate unit and the top side plate unit, adjusting the height of the bottom load-bearing mechanism and the height of the support gantry, so that the height of the bottom formwork matches the height of the bottom plate of the designed beam section, and the height of the outer form flange template part matches the position of the wing plate of the designed beam section, completing the replacement and closing of the outer formwork.

[0013] Further, the angle adjusting member includes a support screw, an upper adjusting nut and a lower adjusting nut. The upper end of the support screw passes through the bottom support longitudinal beam, and the part located above the bottom support longitudinal beam is provided with an upper adjusting nut in a matching manner, and the part located below the bottom support longitudinal beam is provided with a lower adjusting nut in a matching manner;

[0014] When adjusting the angle of the support gantry to make the support gantry return to the vertical state, adjust the positions of the lower adjusting nut and the upper adjusting nut to change the distance between the bottom support longitudinal beam and the bottom load-bearing mechanism, that is, the angle adjustment is realized.

[0015] Furthermore, the supporting portal frame includes portal frame uprights and portal frame crossbeams, and both ends of the portal frame crossbeams are respectively connected to the portal frame uprights.

[0016] Furthermore, the portal frame uprights include a first portal frame upright and a second portal frame upright; the first portal frame upright is a hydraulic jack, the second portal frame upright is a telescopic support rod, and the first portal frame upright and the second portal frame upright are arranged in parallel;

[0017] When adjusting the height of the supporting gantry, the height limit of the telescopic supporting rod is released, the piston rod of the hydraulic jack is retracted, and the height of the telescopic supporting rod is locked after the piston rod of the hydraulic jack is adjusted into place, thereby realizing the height adjustment of the outer mold flange template part.

[0018] Furthermore, the second portal frame upright includes an upper upright part, a middle upright part and a lower upright part, both ends of the middle upright part are provided with external threads, the lower end of the upper upright part and the upper end of the lower upright part are provided with internal threads, and the upper upright part and the lower upright part are respectively matched with the upper end and the lower end of the middle upright part to form a threaded connection.

[0019] Furthermore, the top supporting member includes an outer mold supporting longitudinal beam and an outer mold supporting cross beam, the outer mold supporting longitudinal beam is longitudinally connected to the top ends of multiple door frame uprights, the outer mold supporting cross beam is vertically connected to the outer mold supporting longitudinal beam, and the track is provided.

[0020] Furthermore, two left and right telescopic parts are matched and arranged on one side of the fixed part of the door frame upright pole close to the outer mold web part, forming a triangular connection structure with the outer mold web part;

[0021] When the newly replaced adjustment section side plate unit is adjusted to fit with the top side plate unit, the left and right telescopic parts connected to the fixed part of the door frame upright are rotated upward by a certain angle and telescoped by a certain length to realize the lifting and lowering of the outer mold web part.

[0022] Furthermore, the left and right telescopic parts are electric push rods or hydraulic cylinders.

[0023] Furthermore, the tower crane is used for lifting the adjustment section side panel unit away and for hoisting the adjustment section side panel unit with reduced hoisting height to a replacement position.

[0024] The above-mentioned method for rapid replacement and closing of the outer mold in continuous beam construction has the following advantages:

[0025] (1) The present invention introduces an outer mold support mechanism. The outer mold support mechanism is designed with left and right telescopic members and an outer mold sliding member to realize the movement of the top side plate unit, providing space for the replacement of the adjustment section side plate unit. Then, the up and down adjustment of the left and right telescopic members realizes the adjustment of the position of the side plate unit. Finally, the height adjustment of the outer mold flange template part is achieved by combining with the support gantry that can move up and down, completing the replacement of the outer mold device, changing the traditional process of manually dragging and replacing the outer mold, improving the operation efficiency, and reducing the risk of high-altitude operation.

[0026] (2) The present invention is provided with an angle adjustment member in the bottom support unit, which can complete the angle adjustment of the outer mold flange template part and cooperate to complete the angle adjustment of the bottom mold, improving the degree of automation of outer mold disassembly and replacement.

[0027] (3) The outer mold web part of the present invention is set as multiple segments, and the adjustment section side plate unit can be replaced to realize the construction of the outer mold suitable for different beam heights, solving the problem of height limit conflict in the construction space under the bridge caused by downward demolition. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of one side of the outer mold and the outer mold support mechanism.

[0029] Figure 2 is Figure 1 the right view structural diagram of

[0030] Figure 3 is a schematic top view structural diagram of the outer mold flange template part and the outer mold web part.

[0031] Figure 4 is a schematic structural diagram of the outer mold device of the present utility model during use.

[0032] Figure 5 is Figure 4 the left view structural diagram of the A-A cross-section of

[0033] In the figure, the outer mold web part 1, the bottom side plate unit 101, the adjustment section side plate unit 102, the top side plate unit 103, the outer mold sliding member 2, the outer mold flange template part 3, the left and right telescopic members 4, the outer mold support cross beam 5, the outer mold support longitudinal beam 6, the support nut 7, the gantry vertical pole 8, the fixed support 9, the bottom support longitudinal beam 10, the operation platform, the bottom mold longitudinal beam 12, the gantry cross beam 13, the lower rear cross beam 14, the lower front cross beam 15, the hinge member 16, the angle adjustment member 17, the upper load-bearing beam 18, the upper front cross beam 19, the front sling 20, the upper rear cross beam 21, the first anchor fixture 22, the continuous beam 23, the rear sling 24, the lower traveling beam 25, the counterweight beam 26, the anchor 27, the column 28, the skeleton longitudinal beam 29, the inner mold 30, the traveling mechanism 31, the bottom mold 32. Detailed implementation mode

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0036] In this application, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The formwork for pouring continuous beams includes an outer formwork, an inner formwork 30 and a bottom formwork 32. The bottom formwork 32 is located at the bottom of the outer formwork device, and the inner formwork 30 is arranged between the outer formworks.

[0038] For the outer formwork, it generally includes an outer formwork web part 1 and an outer formwork flange template part 3. However, in this embodiment, the outer formwork web part 1 is specially designed. The outer formwork web part 1 at least includes 3 detachable side plate segments, specifically a bottom side plate unit 101, an adjustment section side plate unit 102, and a top side plate unit 103. Among them, the upper edge of the top side plate unit 103 is connected to the outer formwork flange template part 3. The adjustment section side plate unit 102 is a replaceable segment, which can be one segment or divided into two segments. According to different beam height sections, the corresponding adjustment section side plate unit 102 is selected for replacement to avoid replacing the entire outer formwork web part 1, reducing the work difficulty and improving the safety of the operation. The joints between the side plate units can be connected by double-row anti-misalignment bolts to ensure that the surfaces of the side plate units are flush. The overall total height adapts to the section beam height, and the outer formwork can be replaced upward as a whole, which is different from the traditional method of adjusting the height of the section outer formwork downward, avoiding the problems of height limit at the bottom of the construction area and occupying the bottom space.

[0039] Disconnect the connection between the top side plate unit 103 and the adjustment section side plate unit 102, and move the outer formwork flange template part 3 and the top side plate unit 103 outward; disconnect the connection between the adjustment section side plate unit 102 and the bottom side plate unit 101, lift the adjustment section side plate unit 102, and hoist the adjusted section side plate unit 102 with reduced height to the replacement position; connect the newly replaced adjustment section side plate unit 102 with the bottom side plate unit 101, and make the newly replaced adjustment section side plate unit 102 fit with the top side plate unit 103 (either move the newly replaced adjustment section side plate unit 102 upward or move the top side plate unit 103 downward), and complete the connection and fixation of the newly replaced adjustment section side plate unit 102 and the top side plate unit 103; according to the adjustment of the angle and height of the bottom formwork 32, adjust the angle and height of the outer formwork web part 1 and the outer formwork flange template part 3 to match the angle and height of the designed position, and complete the replacement and closing of the outer formwork;

[0040] Or: according to the adjustment of the angle of the bottom formwork 32, adjust the angles of the outer formwork web part 1 and the outer formwork flange template part 3 to match the designed angle; disconnect the connection between the top side plate unit 103 and the adjustment section side plate unit 102, and move the outer formwork flange template part 3 and the top side plate unit 103 outward; disconnect the connection between the adjustment section side plate unit 102 and the bottom side plate unit 101, lift the adjustment section side plate unit 102, and hoist the adjusted section side plate unit 102 with reduced height to the replacement position; connect the newly replaced adjustment section side plate unit 102 with the bottom side plate unit 101, and make the newly replaced adjustment section side plate unit 102 fit with the top side plate unit 103 (either move the newly replaced adjustment section side plate unit 102 upward or move the top side plate unit 103 downward), and complete the connection and fixation of the newly replaced adjustment section side plate unit 102 and the top side plate unit 103; according to the adjustment of the height of the bottom formwork 32, adjust the heights of the outer formwork web part 1 and the outer formwork flange template part 3 to match the height of the designed position, and complete the replacement and closing of the outer formwork.

[0041] The present invention introduces an outer formwork support mechanism to provide a preferred specific structure for implementing the above adjustment method for realizing the replacement and closing of the outer formwork. The outer formwork support mechanism is described as follows:

[0042] The outer formwork support mechanism includes a support gantry, a top supporting support, left and right telescopic members 4, an outer formwork sliding member 2 and a bottom support unit, wherein: the outer formwork includes an outer formwork web part 1 and an outer formwork flange template part 3, and the support gantry is arranged outside the outer formwork web part 1, specifically on the left and right sides of the outer formwork web part 1, with at least 2 rows arranged on each side, and is a vertically telescopic structure, with at least 2 rows arranged, and the different heights of each row of support gantries can be adjusted according to the situation to match the different heights of the bottom formwork of different beam segments and the outer formwork flange template part 3, combinedFigure 3 As shown, in this embodiment, there are 5 rows, arranged in parallel at intervals along the longitudinal direction of the outer mold, corresponding to the positions and quantities of the support trusses of the flange template part 3 of the outer mold; a top supporting member, arranged at the top of the support gantry, and provided with laterally arranged tracks, and one top supporting member is correspondingly arranged at the top of each support gantry, so as to ensure that the support gantry stably supports the flange template part 3 of the outer mold and provides guidance for the outward movement of the outer mold; an outer mold sliding member 2, arranged under the flange template part 3 of the outer mold, and capable of sliding laterally along the track, so as to support the flange template part 3 of the outer mold to slide outward; left and right telescopic members 4, one end of which is arranged on the side of the support gantry and the top supporting member facing the web part 1 of the outer mold, and the other end is connected to the web part 1 of the outer mold. The left and right telescopic members 4 arranged on one side of the top supporting member can provide power for the outward movement of the flange template part 3 of the outer mold and the top side plate unit 103, and can also provide support for the top side plate unit 103. The left and right telescopic members 4 arranged on one side of the support gantry can provide support for the side plate unit under the top side plate unit 103. In addition, the left and right telescopic members 4 arranged on one side of the support gantry can also adjust the angle to help realize the up and down adjustment of the side plate unit; a bottom support unit, connected to the lower end of the support gantry, and used to provide support for the support gantry. Figure 1 Only the outer mold on one side and its corresponding support gantry, top supporting member, left and right telescopic members 4, outer mold sliding member 2 and bottom support unit shown in are shown, and the outer molds on the other side are also symmetrically provided with the above structures, which can be combined Figure 5 as shown.

[0043] Furthermore, the bottom support unit includes a bottom support longitudinal beam 10. In this embodiment, a fixed support 9 is also provided. The bottom support longitudinal beam 10 is connected to the lower end of the support gantry through the fixed support 9. The bottom support longitudinal beams 10 can be fixed through a bottom load-bearing mechanism, so that the whole support structure maintains integrity. Further still, the bottom support unit further includes an angle adjustment member 17. Combining Figure 2 as shown, Figure 2 relatively Figure 1 additionally shows the bottom load-bearing mechanism and the angle adjustment member 17. The upper end of the angle adjustment member 17 is connected to one side of the bottom support longitudinal beam 10, and the lower end extends vertically and is connected to the bottom load-bearing mechanism. The vertical direction expressed here specifically refers to the arrangement in the up and down direction, and is not absolutely vertical; a rotatable hinge member 16 is arranged on the other side of the bottom support longitudinal beam and is connected to the bottom load-bearing mechanism. Specifically, this embodiment provides a specific structure of the angle adjustment member 17. Combining Figure 2 and Figure 4As shown, the angle adjusting member 17 includes a support screw, an upper adjusting nut and a lower adjusting nut. The lower end of the support screw is connected to the bottom load-bearing structure. The upper end of the support screw passes through the bottom support longitudinal beam 10. The part located above the bottom support longitudinal beam 10 is provided with a matching upper adjusting nut, and the part located below the bottom support longitudinal beam 10 is provided with a matching lower adjusting nut. The upper adjusting nut and the lower adjusting nut fix the upper end of the support screw in the bottom support longitudinal beam 10.

[0044] Furthermore, the supporting gantry includes gantry vertical poles 8 and gantry crossbeams 13. Both ends of the gantry crossbeam 13 are respectively connected to the gantry vertical poles. Each supporting gantry is provided with at least two gantry vertical poles 8, and the gantry vertical poles 8 are connected by the gantry crossbeam 13. Of course, this gantry crossbeam 13 can be made of steel plates and can also serve as an operating platform and a walking passage for operators, or diamond plates can be welded on the gantry crossbeam 13 to serve as the operating platform 11. Further, the gantry vertical pole 8 includes a first gantry vertical pole and a second gantry vertical pole; in this embodiment, the first gantry vertical pole is selected as a hydraulic jack, and the second gantry vertical pole is a telescopic support rod, that is, a mechanical lifting structure. The first gantry vertical pole and the second gantry vertical pole are arranged in parallel at intervals. The first gantry vertical pole provides power for the expansion and contraction, that is, the piston expansion and contraction of the hydraulic jack provides power for the expansion and contraction of the gantry vertical pole 8. The second gantry vertical pole provides a stable supporting force and can be a sleeve rod structure, including an upper section vertical pole part, a middle section vertical pole part, and a lower section vertical pole part. External threads are provided at both ends of the middle section vertical pole part, and internal threads are provided at the lower end of the upper section vertical pole part and the upper end of the lower section vertical pole part. The upper section vertical pole part and the lower section vertical pole part are respectively matched with the upper end and the lower end of the middle section vertical pole part to form a threaded connection. By rotating the middle section, the relative positions of the upper section vertical pole part or the lower section vertical pole part and the middle section vertical pole part can be adjusted to adjust the length of the second gantry vertical pole. Combining the structure of this embodiment, the first gantry vertical pole is selected for one row of supporting gantries, and the second gantry vertical pole is selected for the adjacent row of supporting gantries, that is, the first gantry vertical pole and the second gantry vertical pole are arranged in parallel at intervals. According to the structure of the gantry vertical pole 8 in this embodiment, in order to provide strong support for the outer formwork, about 2 telescopic members 4 are arranged on one side of the fixed part (i.e., the non-movable and non-expandable part) of the gantry vertical pole 8 close to the web part 1 of the outer formwork, forming a triangular connection structure with the web part 1 of the outer formwork. That is, the two telescopic members 4 are close to each other at one end connecting the fixed part of the gantry vertical pole 8 and are far away from each other at one end connecting the web part 1 of the outer formwork, so as to form a stable support for the web part 1 of the outer formwork, support the construction loads of the bottom side plate unit 101 and the adjustment section side plate unit 102 of the outer formwork. In addition, the telescopic members can rotate a certain angle to help realize the lifting of the web part of the outer formwork. Specifically for the fixed part of the gantry vertical pole 8, for the first gantry vertical pole, it can be the cylinder part of the hydraulic jack, and for the second gantry vertical pole, it can be the lower section of the second gantry vertical pole. The upper end and the lower end of the gantry vertical pole 8 are respectively connected to the outer formwork support longitudinal beam 6 and the bottom support longitudinal beam 10. Flange plates are respectively provided at the upper end and the lower end, and bolts pass through the flange plates and are screwed into the outer formwork support longitudinal beam 6 and the bottom support longitudinal beam 10 to realize the fixation of the upper end and the lower end. The left and right telescopic members 4 are electric push rods or hydraulic cylinders, and electric push rods are selected in this embodiment.

[0045] Furthermore, the top supporting member includes an outer mold supporting longitudinal beam 6 and an outer mold supporting cross beam 5, the outer mold supporting longitudinal beam 6 is longitudinally connected to the top of a plurality of portal frame uprights 8, and the outer mold supporting cross beam 5 is vertically connected to the outer mold supporting longitudinal beam 6, and a track is provided. The top supporting member is provided to maintain its integrity with the supporting portal frame and ensure the supporting strength of the track and the top concrete. The top supporting structure includes a supporting truss of the outer mold flange template part 3 as a supporting main rib, the outer mold supporting longitudinal beam 6 and the outer mold supporting cross beam 5 are supported by light steel welding, and cooperate with the outer mold sliding part 2. The outer mold sliding part 2 can be composed of a transverse block, a bearing and a roller. The bottom of the transverse block is connected to the roller through a bearing. The track is provided with a groove for the roller to travel to prevent the outer mold sliding part 2 from leaving the track. The maximum transverse movement of the sliding block can be adjusted to 30cm to 45cm. A limiting steel plate is fixed in the track to prevent the outer mold sliding part 2 from leaving the outer end of the track. The transverse movement driving force comes from the left and right telescopic parts 4. When the bottom support is stable, the left and right telescopic parts 4 telescopically drive the outer mold flange template part 3 to realize left and right horizontal movement on the track based on the outer mold sliding part 2. For the connection between the portal upright 8 and the outer mold supporting longitudinal beam 6, this embodiment provides a specific structure. For the first portal upright, a thread is provided at the top of the first portal upright, and a support nut is provided at the bottom of the outer mold supporting longitudinal beam 6. The top of the first portal upright is threadedly connected with the support nut 7 to achieve the fixation of the first portal upright and the outer mold supporting longitudinal beam 6. For the second portal upright, a stiffening plate may be provided at the top of the second portal upright, and the second portal upright and the outer mold supporting longitudinal beam 6 are fixed by welding the stiffening plate.

[0046] Combination Figure 1 and 2As shown in the figure, the specific steps for replacing and closing the outer formwork include: disconnect the connection between the top side plate unit 103 and the adjustment section side plate unit 102, the left and right telescopic members 4 connected to the top supporting member contract, and the outer formwork flange template part 3 and the top side plate unit 103 move outward relying on the outer formwork sliding member; disconnect the connection between the adjustment section side plate unit 102 and the bottom side plate unit 101, lift the adjustment section side plate unit 102 off, and hoist the adjusted section side plate unit 102 with reduced height to the replacement position; connect the newly replaced adjustment section side plate unit 102 to the bottom side plate unit 101, the left and right telescopic members 4 connected to the bottom side plate unit 101 adjust the angle upward and / or the support gantry adjusts the height, so that the newly replaced adjustment section side plate unit 102 fits with the top side plate unit 103, complete the connection and fixation of the newly replaced adjustment section side plate unit 102 and the top side plate unit 103, adjust the angle and height of the bottom load-bearing mechanism and the height of the support gantry, contract the angle adjuster 17 at the rear end of the bottom support longitudinal beam 10, so that the elevation angle and height of the bottom formwork 32 match the elevation angle and height of the designed beam segment bottom plate, and make the support gantry return to the vertical state, and the angle and height of the outer formwork flange template part 3 match the position of the designed beam segment wing plate, thus completing the replacement and closing of the outer formwork. Among them: adjusting the angle and height of the bottom load-bearing mechanism, adjusting the height of the support gantry, and contracting the angle adjuster 17 at the rear end of the bottom support longitudinal beam 10, the order of these three steps can be adjusted according to the situation, and adjusting the angle and height of the bottom load-bearing mechanism and adjusting the height of the support gantry can also be carried out simultaneously.

[0047] According to the actual construction situation, the order of some steps can also be adjusted. For example, the specific steps can be: adjusting the angle of the bottom load-bearing mechanism so that the elevation angle of the bottom formwork 32 matches the elevation angle of the designed beam segment bottom plate, adjusting the angle adjuster 17 to make the support gantry return to the vertical state; disconnecting the connection between the top side plate unit 103 and the adjustment section side plate unit 102, the left and right telescopic members 3 connected to the top supporting member contract, and the outer formwork flange template part 3 and the top side plate unit 103 move outward relying on the outer formwork sliding member 2; disconnecting the connection between the adjustment section side plate unit 102 and the bottom side plate unit 101, lifting the adjustment section side plate unit 102 off, and hoisting the adjusted section side plate unit 102 with reduced height to the replacement position; connecting the newly replaced adjustment section side plate unit 102 to the bottom side plate unit 101, the left and right telescopic members 4 connected to the bottom side plate unit 101 adjust the angle upward and / or the support gantry adjusts the height, so that the newly replaced adjustment section side plate unit 102 fits with the top side plate unit 103, complete the connection and fixation of the newly replaced adjustment section side plate unit 102 and the top side plate unit 103, adjusting the bottom load-bearing mechanism and the support gantry to adjust the height, so that the height of the bottom formwork matches the height of the designed beam segment bottom plate, and the height of the outer formwork flange template part matches the position of the designed beam segment wing plate, thus completing the replacement and closing of the outer formwork.

[0048] When adjusting the angle of the support gantry, the positions of the lower adjustment nut and the upper adjustment nut are adjusted to change the distance between the bottom support longitudinal beam 10 and the bottom load-bearing mechanism, thereby achieving the angle adjustment. During the construction process of the present invention, since the inclination angle becomes smaller, the lower adjustment nut and the upper adjustment nut are generally adjusted downward.

[0049] When adjusting the height of the support gantry, the height limit of the telescopic support rod is released, the piston rod of the hydraulic jack is retracted, and the height of the telescopic support rod is locked after the piston rod of the hydraulic jack is adjusted to the right position, thus realizing the height adjustment of the outer mold flange template part 3.

[0050] When the newly replaced adjustment section side plate unit 102 is adjusted to fit with the top side plate unit 103, the left and right telescopic members 4 connected to the fixed part of the door frame upright 8 are rotated upward by a certain angle to realize the lifting and lowering of the outer mold web part.

[0051] Furthermore, a tower crane can be used to lift and lower the adjustment section side panel unit and adjust the section side panel unit to a replacement position.

[0052] At the same time, combined Figure 4 and Figure 5As shown, this embodiment provides a traveling integrated machine structure that facilitates the support of the above-mentioned outer formwork and the outer formwork support mechanism. However, the actual construction is not limited to the traveling integrated machine structure provided in this embodiment. That is, any bottom load-bearing mechanism that can support the outer formwork support mechanism can adopt the method of the present invention to achieve the rapid replacement and closing of the outer formwork. The following is a detailed description of the structure (hereinafter referred to as the traveling integrated machine) for supporting the above-mentioned formwork used in this embodiment: It includes a support skeleton system, a formwork support system, and a traveling system, where: The support skeleton system includes four columns 28, two lower traveling beams 25, two upper load-bearing beams 18, a front upper cross beam 19, and a rear upper cross beam 21. The upper ends of every two columns 28 are respectively connected to one of the upper load-bearing beams 18, and the lower ends are respectively connected to one of the lower traveling beams 25. The front ends of the two upper load-bearing beams 18 are connected by the front upper cross beam 19, and the rear upper cross beam 21 is connected between the two front-side columns 28. Specifically, the four columns 28, the two lower traveling beams 25, and the two upper load-bearing beams 18 enclose a cubic frame. However, the upper ends of the columns 28 are connected to the middle parts of the upper load-bearing beams 18, and the front parts of the upper load-bearing beams 18 extend outside the columns 28 to leave space for hoisting the formwork support system in front of the completed connection beam 23 segment; The formwork support system includes a suspension mechanism, a bottom load-bearing mechanism, and a formwork. The suspension mechanism includes a front sling 20 and a rear sling 24. At least two front slings 20 are provided, with the upper ends respectively connected to the upper load-bearing beam 18 and the lower ends connected to the front side of the bottom load-bearing mechanism. At least two rear slings 24 are provided, with the upper ends respectively connected to the two ends of the rear upper cross beam 21 and the lower ends connected to the rear side of the bottom load-bearing mechanism. That is, the front sling 20 and the rear sling 24 suspend the entire bottom load-bearing mechanism to keep it stable. The bottom load-bearing mechanism is used to support the formwork, that is, it includes the outer formwork of this embodiment, the outer formwork support mechanism, the bottom formwork 32, and the inner formwork 30. The bottom load-bearing mechanism includes a front lower cross beam 15 and a rear lower cross beam 14, which are arranged on the front side and the rear side under the formwork to share all the weights. In this embodiment, the front lower cross beam 15 is connected to the front sling 20, and the rear lower cross beam 14 is connected to the rear sling 24; An operation platform can also be provided in front of the front lower cross beam 15, around the rear lower cross beam 14, and between the outer formwork support longitudinal beams 6 to facilitate the operation of construction workers. The operation platform can be welded at appropriate positions on the front lower cross beam 15, the rear lower cross beam 14, and the outer formwork support longitudinal beams 6 according to the construction needs. The operation platform also relies on the suspension forces of the front sling 20 and the rear sling 24; The support structure bottom formwork longitudinal beam 12 under the bottom formwork 32 is also arranged on the bottom load-bearing mechanism to provide an operation support surface for it. In this embodiment, the front lower part of the bottom formwork longitudinal beam 12 is connected to the front lower cross beam 15, and the rear lower part is connected to the rear lower cross beam 14; The traveling system can use rolling wheels to achieve walking, or it can use a crawler structure driven by rolling wheels to achieve walking. It is arranged under the lower traveling beam 25 and is used to drive the entire traveling integrated machine to move forward or backward.To ensure the safety of construction, an anchor 27 is also provided in this embodiment. The anchor 27 is used to fix the support framework system to prevent the entire integrated traveling machine from tilting forward, that is, to maintain the balance of the integrated traveling machine throughout the hoisting construction process. During the construction of continuous beams, since the front end of the integrated traveling machine needs to hoist formwork, the bottom load-bearing mechanism, and the 23rd segment of the connecting beam during pouring, the front end needs to bear a very large weight. To solve the problem of a large risk of overturning, it is most appropriate to set the anchor 27 at the rear end of the support framework system. Of course, the anchor 27 can also be additionally provided in the middle or at the front end of the support framework system, which can be determined according to the actual situation. For the setting of the anchor, a horizontally arranged counterweight beam 26 can be connected above the matching position of the lower traveling beam 25. The counterweight beam 26 can be screwed into the anchor 27. The lower end of the anchor 27 can be fixed in the first anchor fixing part 22 embedded in the continuous beam 23, and the upper end can be fixed through the second anchor fixing part. The counterweight beam can share the force of the anchor 27. The anchor 27 can be made of threaded steel bars. Correspondingly, nuts can be embedded in the continuous beam 23 as the first anchor fixing part 22, and nuts can be screwed into the upper end of the anchor 27 as the second anchor fixing part. With the above structure of the integrated traveling machine, adjusting the angle of the bottom load-bearing mechanism is achieved by changing the height difference between the lower front cross beam 15 and the lower rear cross beam 14, and adjusting the height of the bottom load-bearing mechanism is achieved by changing the hoisting lengths of the front sling 20 and the rear sling 24.

Claims

1. A method for quickly replacing and closing the outer formwork during the construction of a continuous beam, characterized in that: The outer formwork includes an outer formwork web part and an outer formwork flange template part. The outer formwork web part includes at least 3 detachable side plate units, which are divided into a top side plate unit, an adjustment section side plate unit, and a bottom side plate unit. The adjustment section side plate unit is used for replacement according to the change in the height of the continuous beam; The specific steps include: disconnecting the connection between the top side plate unit and the adjustment section side plate unit, and moving the outer formwork flange template part and the top side plate unit outward; disconnecting the connection between the adjustment section side plate unit and the bottom side plate unit, lifting the adjustment section side plate unit off, and hoisting the adjustment section side plate unit with reduced height to the replacement position; connecting the newly replaced adjustment section side plate unit with the bottom side plate unit, making the newly replaced adjustment section side plate unit fit with the top side plate unit, and completing the connection and fixation of the newly replaced adjustment section side plate unit and the top side plate unit; according to the adjustment of the bottom formwork angle and height, adjusting the angles and heights of the outer formwork web part and the outer formwork flange template part to match the angles and heights at the designed position, and completing the replacement and closing of the outer formwork; Or: according to the adjustment of the bottom formwork angle, adjusting the angles of the outer formwork web part and the outer formwork flange template part to match the designed angle; disconnecting the connection between the top side plate unit and the adjustment section side plate unit, and moving the outer formwork flange template part and the top side plate unit outward; disconnecting the connection between the adjustment section side plate unit and the bottom side plate unit, lifting the adjustment section side plate unit off, and hoisting the adjustment section side plate unit with reduced height to the replacement position; connecting the newly replaced adjustment section side plate unit with the bottom side plate unit, making the newly replaced adjustment section side plate unit fit with the top side plate unit, and completing the connection and fixation of the newly replaced adjustment section side plate unit and the top side plate unit; according to the adjustment of the bottom formwork height, adjusting the heights of the outer formwork web part and the outer formwork flange template part to match the heights at the designed position, and completing the replacement and closing of the outer formwork; An outer mold support mechanism is provided on the outer side of the outer mold web part. Two groups of the outer mold support mechanisms are symmetrically arranged on the outer side of the outer mold. Each group of the outer mold support mechanisms includes a support gantry, a top support member, an outer mold sliding member, left and right telescopic members, and a bottom support unit. The support gantry is arranged on the outer side of the outer mold web part and is a vertically telescopic structure, with at least two rows provided. A top support member is arranged on the support gantry. The top support member is provided with horizontally arranged tracks, and an outer mold sliding member that can move horizontally is arranged in the tracks. The outer mold sliding member is used to support the outer mold flange template part above it. The left and right telescopic members are arranged on one side of the support gantry and / or the top support member facing the outer mold web part, and the other end is connected to the outer mold web part. A longitudinal bottom support unit is arranged below the support gantry. The bottom support unit includes a bottom support longitudinal beam and an angle adjustment member. The bottom support longitudinal beam is connected to the lower end of the support gantry. The upper end of the angle adjustment member is connected to one side of the bottom support longitudinal beam, and the lower end extends vertically and is connected to the bottom load-bearing mechanism. A rotatable hinge is arranged on the other side of the bottom support longitudinal beam and is connected to the bottom load-bearing mechanism; The specific steps include: releasing the connection between the top side plate unit and the adjustment section side plate unit, contracting the left and right telescopic members connected to the top support member, and the outer mold flange template part and the top side plate unit move outward relying on the outer mold sliding member; releasing the connection between the adjustment section side plate unit and the bottom side plate unit, lifting the adjustment section side plate unit off, and hoisting the adjusted section side plate unit with reduced height to the replacement position; connecting the newly replaced adjustment section side plate unit to the bottom side plate unit, adjusting the angle upward of the left and right telescopic members connected to the bottom side plate unit and / or adjusting the height of the support gantry, so that the newly replaced adjustment section side plate unit fits with the top side plate unit, completing the connection and fixation of the newly replaced adjustment section side plate unit and the top side plate unit, adjusting the angle and height of the bottom load-bearing mechanism and the height of the support gantry, contracting the angle adjustment member at the rear end of the bottom support longitudinal beam, so that the elevation angle and height of the bottom mold match the elevation angle and height of the bottom plate of the designed beam segment, and the support gantry returns to the vertical state, and the angle and height of the outer mold flange template part match the position of the wing plate of the designed beam segment, completing the replacement and closing of the outer mold; Or: adjust the angle of the bottom load-bearing mechanism so that the elevation angle of the bottom mold matches the elevation angle of the designed beam section bottom plate, adjust the angle adjustment piece to restore the support gantry to a vertical state; release the connection between the top side panel unit and the adjustment section side panel unit, shrink the left and right telescopic pieces connected to the top supporting support, and move the outer mold flange template part and the top side panel unit outwards by relying on the outer mold sliding piece; release the connection between the adjustment section side panel unit and the bottom side panel unit, lift the adjustment section side panel unit away, and lift the height-reduced adjustment section side panel unit to the replacement position; The newly replaced adjustment section side panel unit is connected to the bottom side panel unit, the left and right telescopic parts connected to the bottom side panel unit are adjusted upward in angle and / or the supporting portal is adjusted in height, so that the newly replaced adjustment section side panel unit is fitted with the top side panel unit, the connection and fixation of the newly replaced adjustment section side panel unit with the top side panel unit is completed, the height of the bottom load-bearing mechanism and the height of the supporting portal are adjusted to match the height of the bottom mold with the designed height of the bottom plate of the beam section, and the height of the outer mold flange template part matches the designed beam section wing plate position, and the replacement and closing of the outer mold are completed.

2. The method for quickly replacing and closing the outer mold in the continuous beam construction according to claim 1 is characterized in that: The angle adjustment member comprises a support screw, an upper adjustment nut and a lower adjustment nut, the upper end of the support screw passes through the bottom support longitudinal beam, the portion located above the bottom support longitudinal beam is matched with an upper adjustment nut, and the portion located below the bottom support longitudinal beam is matched with a lower adjustment nut; When the angle of the support mast is adjusted to restore the support mast to a vertical state, the positions of the lower adjustment nut and the upper adjustment nut are adjusted to change the distance between the bottom support longitudinal beam and the bottom load-bearing mechanism, thereby achieving angle adjustment.

3. The method for quickly replacing and closing the outer mold in the continuous beam construction according to claim 1 is characterized in that: The supporting portal frame comprises a portal frame upright and a portal frame crossbeam, and two ends of the portal frame crossbeam are respectively connected to the portal frame upright.

4. The method for quickly replacing and closing the outer mold in the continuous beam construction according to claim 3 is characterized in that: The portal frame uprights include a first portal frame upright and a second portal frame upright; the first portal frame upright is a hydraulic jack, the second portal frame upright is a telescopic support rod, and the first portal frame upright and the second portal frame upright are arranged in parallel; When adjusting the height of the supporting gantry, the height limit of the telescopic supporting rod is released, the piston rod of the hydraulic jack is retracted, and the height of the telescopic supporting rod is locked after the piston rod of the hydraulic jack is adjusted into place, thereby realizing the height adjustment of the outer mold flange template part.

5. The method for rapid replacement and closing of outer molds in continuous beam construction according to claim 3 is characterized in that: The top supporting member includes an outer mold supporting longitudinal beam and an outer mold supporting cross beam. The outer mold supporting longitudinal beam is longitudinally connected to the top ends of multiple door frame uprights, and the outer mold supporting cross beam is vertically connected to the outer mold supporting longitudinal beam and is provided with the track.

6. The method for quickly replacing and closing the outer mold in the continuous beam construction according to claim 4 is characterized in that: The second gantry vertical rod includes an upper vertical rod part, a middle vertical rod part, and a lower vertical rod part. External threads are provided at both ends of the middle vertical rod part, and internal threads are provided at the lower end of the upper vertical rod part and the upper end of the lower vertical rod part. The upper vertical rod part and the lower vertical rod part are respectively matched with the upper end and the lower end of the middle vertical rod part to form a threaded connection.

7. The method for quickly replacing and closing the outer formwork during continuous beam construction according to claim 3, characterized in that: On one side of the fixed part of the gantry vertical rod close to the web part of the outer formwork, about 2 left and right telescopic members are arranged in a matching manner, forming a triangular connection structure with the web part of the outer formwork; When adjusting the newly replaced adjusting section side plate unit to fit the top side plate unit, the left and right telescopic members connected to the fixed part of the gantry vertical rod rotate upward by a certain angle and extend by a certain length to realize the lifting and lowering of the web part of the outer formwork.

8. The method for quickly replacing and closing the outer formwork during continuous beam construction according to claim 1 or 7, characterized in that: The left and right telescopic members are electric push rods or hydraulic cylinders.

9. The method for quickly replacing and closing the outer formwork during continuous beam construction according to claim 1, characterized in that: A tower crane is used for both lifting the adjusting section side plate unit and adjusting the adjusting section side plate unit with reduced lifting height to the replacement position.

Images