CN111663458A - Self-supporting overhanging formwork, formwork construction auxiliary device and formwork construction process - Google Patents

Abstract

The invention discloses a self-supporting overhanging formwork, a formwork construction auxiliary device and a formwork construction process, and relates to the technical field of bridge construction. This template of encorbelmenting of self-supporting formula includes template main part and bracing piece, and two relative sides are the connection side respectively in the template main part and the side of encorbelmenting, and the outward flange of pterygoid lamina is articulated on the I-steel of connecting the side and combination beam side, and the one end of bracing piece articulates in the side of encorbelmenting, and the other end is used for supporting in holding in the contained angle between the lower pterygoid lamina and the web of I-steel to support the template main part through the bracing piece. The self-supporting overhanging formwork, the formwork construction auxiliary device and the formwork construction process have the characteristics of convenience in disassembly and assembly and safety in construction.

Description

Self-supporting cantilever formwork, formwork construction auxiliary device and formwork construction technology

technical field

The invention relates to the technical field of bridge construction, in particular to a self-supporting cantilever formwork, a formwork construction auxiliary device and a formwork construction process.

Background technique

I-beam-concrete composite beams are widely used in large-span and multi-span railway bridge projects. Compared with concrete simply supported beams and concrete continuous beams, they have the advantages of large spanning capacity and building height.

However, in the construction process, the wing plate of the I-beam-concrete composite beam needs to be cast-in-place, but the height of the wing plate from the ground is high, the installation and disassembly of the formwork at the wing plate is complicated, and the safety is low.

In view of this, it is particularly important to develop and design a self-supporting cantilever formwork, formwork construction auxiliary device and formwork construction process that can solve the above technical problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a self-supporting cantilever formwork, which has the characteristics of convenient disassembly and assembly and safer construction.

Another object of the present invention is to provide a formwork construction auxiliary device, which also has the characteristics of convenient disassembly and assembly and safer construction.

Another object of the present invention is to provide a formwork construction process, which also has the characteristics of convenient disassembly and assembly and safer construction.

The present invention provides a technical scheme:

In a first aspect, an embodiment of the present invention provides a self-supporting cantilevered formwork, comprising a formwork body and a support rod; two opposite sides on the formwork body are a connecting side and a cantilevered side, respectively, and the The connecting side and the outer edge of the I-beam upper wing plate on the side of the composite beam are hinged; one end of the support rod is hinged to the cantilevered side, and the other end is used to abut against the lower wing plate of the I-beam. and the web to support the formwork body through the support rods.

In combination with the first aspect, in a first implementation manner of the first aspect, one end of the support rod away from the template body is a support end, and an end surface of the support end has a first abutting surface and a first abutting surface arranged at an included angle. There are two abutting surfaces, and the first abutting surface is used for abutting with the side surface of the web, and the second abutting surface is used for abutting with a top surface of the lower wing plate.

In combination with the first aspect and the above-mentioned implementation manners, in a second implementation manner of the first aspect, a telescopic adjustment portion is provided at one end of the support rod close to the template main body, and the support rod is connected with the telescopic adjustment portion through the telescopic adjustment portion. The cantilevered side is hinged; the telescopic adjustment part can be extended or shortened to adjust the height of the cantilevered side.

In combination with the first aspect and the above implementation manners, in a third implementation manner of the first aspect, the telescopic adjustment portion is a positive and negative wire adjusting rod.

In combination with the first aspect and the above-mentioned implementation manners, in a fourth implementation manner of the first aspect, the support rod is provided with a pull-up connection portion, and the template body is provided with a pull-up hole; the self-supporting type The cantilevered formwork further includes a pulling piece, which can pass through the pulling hole and is connected with the pulling connecting part to lift the support rod, thereby driving the support rod relative to the formwork The main body is rotated so that the end of the support rod away from the cantilever side is located within the included angle between the web and the lower wing.

In combination with the first aspect and the above-mentioned implementation manner, in a fifth implementation manner of the first aspect, the number of the template bodies is multiple, the multiple template bodies are arranged in an arrangement, and the adjacent template bodies have The cantilevered sides are connected to each other.

In combination with the first aspect and the above-mentioned implementation manners, in a sixth implementation manner of the first aspect, the self-supporting cantilever formwork further includes an anti-detachment connection rope, and the anti-detachment connection rope can be connected to the cantilever side. The edge is connected and used to connect with the reinforcing bars on the composite beam.

In the second aspect, the embodiment of the present invention also provides a formwork construction auxiliary device for installing the self-supporting cantilever formwork; the formwork construction auxiliary device includes a construction crane, and the construction crane is used for movably It is arranged on the composite beam, and can be connected with the cantilevered side, so as to be used for hoisting the main body of the formwork for movement.

In combination with the second aspect, in a first implementation manner of the second aspect, the formwork construction auxiliary device further includes a construction guide rail, the construction guide rail is used to be installed on the composite beam, and along the extension direction of the composite beam The construction crane is movably arranged on the construction guide rail to hoist the formwork main body connected to different positions of the composite beam along the construction guide rail.

In combination with the second aspect and the above implementation manner, in the second implementation manner of the second aspect, the formwork construction auxiliary device further includes a construction conveying vehicle, and the construction conveying vehicle is movably arranged on the construction guide rail, so The construction transport vehicle can move along the construction guide rail for transporting the formwork body.

In a third aspect, an embodiment of the present invention also provides a formwork construction process, which is applied to the formwork construction auxiliary device, and the formwork construction process includes: lifting the formwork main body to the outer edge of the upper wing plate ; Hinging the connecting side and the outer edge of the upper wing plate; Pulling the support rod, and making the end of the support rod away from the main body of the template abut against the lower wing plate and the web plate In the included angle between them, the template body is supported by the support rod.

With reference to the third aspect, in a first implementation manner of the third aspect, the formwork construction process further includes: pulling the cantilevered side edge, and simultaneously pulling the connecting side edge by the auxiliary channel, wherein the The auxiliary channel is the through channel set when pouring the bridge deck concrete on the composite beam, and one end of the auxiliary channel faces the connecting side; disconnect the connection between the connecting side and the upper wing plate, and lower the Connect the side edges so that the formwork body is in a vertical state; lift the self-supporting overhanging formwork to a preset position to complete the dismantling of the self-supporting overhanging formwork.

Compared with the prior art, the beneficial effects of the self-supporting cantilever formwork provided by the embodiment of the present invention relative to the prior art include:

The two opposite sides on the main body of the formwork are the connecting side and the overhanging side respectively, the connecting side is hinged with the outer edge of the I-beam upper wing plate on the side of the composite beam, and one end of the support rod is hinged on the overhanging side. The other end is used to abut against the angle between the lower wing plate and the web of the I-beam corresponding to the formwork main body, so as to support the formwork main body through the support rod, so that when installing the formwork main body, the hinged joint can be The connecting side of the formwork body of the support rod is hinged to the outer edge of the upper wing plate, and then the support rod is lifted on the composite beam, so that the end of the support rod away from the cantilevered side is against the lower wing of the corresponding I-beam. When the main body of the formwork is disassembled, the connection between the connecting side and the upper wing plate can be disconnected, and the main body of the formwork can be lifted. There is no need for construction personnel to support and remove the formwork under the I-beam, and the construction process is also relatively safe.

The beneficial effects of the formwork construction auxiliary device and the formwork construction process provided by the embodiments of the present invention relative to the prior art are the same as the beneficial effects of the above-mentioned self-supporting cantilevered formwork relative to the prior art, which will not be repeated here.

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are exemplified below, and are described in detail as follows in conjunction with the accompanying drawings.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. It is to be understood that the following drawings illustrate only certain embodiments of the invention and are therefore not to be considered limiting of its scope. For those of ordinary skill in the art, other related drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of the self-supporting cantilever formwork provided by the first embodiment of the present invention when it is installed on a composite beam from a viewing angle.

FIG. 2 is a schematic structural diagram of the self-supporting cantilever formwork provided by the first embodiment of the present invention when it is installed on a composite beam from another perspective.

3 is a schematic structural diagram of a support rod of a self-supporting cantilever formwork provided by the first embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a formwork construction auxiliary device provided by a second embodiment of the present invention.

FIG. 5 is a schematic structural diagram of the formwork construction auxiliary device provided by the second embodiment of the present invention when the formwork main body is installed.

6 is a schematic structural diagram of the formwork construction auxiliary device provided by the second embodiment of the present invention when the formwork main body is disassembled.

FIG. 7 is a partial schematic flow chart of a formwork construction process provided by a third embodiment of the present invention.

FIG. 8 is a schematic flow chart of another part of the formwork construction process provided by the third embodiment of the present invention.

Icon: 20- formwork construction auxiliary device; 21- construction crane; 212- lifting steel rope; 22- construction guide rail; 23- construction conveying vehicle; 10- self-supporting cantilever formwork; 11- formwork main body; 111- connecting side ; 112 - cantilever side; 113 - pull hole; 12 - support rod; 120 - support end; 121 - first abutting surface; 122 - second abutting surface; 123 - telescopic adjustment part; Connecting part; 13-pulling piece; 15-anti-drop connecting rope; 900-composite beam; 910-I-beam; 912-upper wing plate; 913-web plate; 916-lower wing plate; 920-bridge deck concrete; 921 - Auxiliary channel.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or when the product of the invention is used. Orientation or positional relationship that is usually placed, or the orientation or positional relationship that is commonly understood by those skilled in the art, 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 , constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. The terms "first", "second", etc. are only used to differentiate the description and should not be construed to indicate or imply relative importance. The terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion such that a process, method, article or device comprising a list of elements includes not only those elements, but also other not expressly listed elements, or also include elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

It should also be noted that, unless otherwise expressly specified and limited, terms such as "arrangement" and "connection" should be understood in a broad sense, for example, "connection" may be a fixed connection, a detachable connection, or an integral connection ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

First embodiment:

Please refer to FIGS. 1 and 2 . FIG. 1 is a schematic structural diagram of the self-supporting cantilever formwork 10 according to the first embodiment of the present invention when it is installed on a composite beam 900 from a viewing angle. FIG. 2 is a schematic structural diagram of the self-supporting cantilever formwork 10 provided by the first embodiment of the present invention when it is installed on a composite beam 900 from another viewing angle. The composite beam 900 refers to an I-beam-concrete composite beam.

The first embodiment of the present invention provides a self-supporting cantilever formwork 10 , and the self-supporting cantilever formwork 10 has the characteristics of convenient disassembly and assembly and safer construction.

The structural composition, working principle and beneficial effects of the self-supporting cantilever formwork 10 provided by the first embodiment of the present invention will be described in detail below.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 . FIG. 3 is a schematic structural diagram of the support rod 12 of the self-supporting cantilever formwork 10 according to the first embodiment of the present invention.

The self-supporting cantilever formwork 10 includes a formwork main body 11 and a support rod 12 , which supports the formwork main body 11 through the support rods 12 to facilitate the installation and disassembly of the formwork main body 11 , which does not require manual support or formwork removal under the composite beam 900 The operation is more convenient and the safety is higher.

Specifically, the two opposite sides of the template body 11 are the connecting side 111 and the overhanging side 112 respectively. In this embodiment, the template body 11 is rectangular, and the connecting side 111 and the overhanging side 112 are templates. The two non-adjacent edges on the main body 11 are hinged to the outer edge of the upper wing plate 912 of the I-beam 910 on the side of the composite beam 900. Straight side, two vertical sides of the composite beam 900 are respectively provided with an I-beam 910, and the upper wing plate 912 and the lower wing plate 916 of the two I-beams 910 are arranged horizontally. The outer edge refers to the edge on the upper wing plate 912 away from the composite beam 900 .

One end of the support rod 12 is hinged to the cantilever side 112 , and the other end is used to abut against the angle between the lower wing plate 916 and the web 913 of the I-beam 910 corresponding to the formwork body 11 , so as to pass the support rod 12 The formwork body 11 is supported so that the formwork body 11 is in the state shown in FIG. 1 .

In this way, when installing the formwork body 11 , the connecting side 111 of the formwork body 11 of the hinged support rod 12 can be hinged to the outer edge of the upper wing plate 912 , and then the support rod 12 can be lifted on the composite beam 900 to The end of the support rod 12 away from the cantilever side 112 is pressed against the angle between the lower wing plate 916 and the web 913 of the corresponding I-beam 910, and when the formwork body 11 is disassembled, the connection side can be disconnected The connection between the side 111 and the upper wing plate 912 can lift the formwork main body 11, its installation and disassembly are relatively convenient, and the construction process does not require the construction personnel to perform formwork support and formwork under the I-beam 910. The construction process It is also safer.

Further, one end of the support rod 12 away from the formwork main body 11 is a support end 120 , and the end surface of the support end 120 may have a first abutting surface 121 and a second abutting surface 122 arranged at an included angle, and the first abutting surface 121 is used to abut against the side surface of the web 913 of the I-beam 910, and the second abutting surface 122 is used to abut the top surface of the lower wing plate 916 of the I-beam 910. The web 913 of the steel 910 and the top surface of the lower wing plate 916 are abutted, so as to improve the stability of the support rod 12 against the I-beam 910 through the surface-to-surface abutment method, thereby improving the stability of the formwork body 11 .

In addition, the end of the support rod 12 close to the template main body 11 can also be provided with a telescopic adjustment part 123, the support rod 12 is hinged with the cantilever side 112 through the telescopic adjustment part 123, and the telescopic adjustment part 123 can be extended or shortened to Adjust the height of the cantilever side 112 to adjust the template body 11 to a preset position.

It should be noted that the telescopic adjusting part 123 can be a positive and negative wire adjusting rod, that is, the telescopic adjusting part 123 is a structure composed of a sleeve and two screw rods threadedly connected to both ends of the sleeve. By rotating the sleeve in different directions, In order to make the two sections of the screw rods close to each other or away from each other, so as to achieve the effect of adjusting the length of the support rod 12; of course, in other embodiments, the telescopic adjustment part 123 can also be other telescopic structures, and this embodiment has its structural form. No restrictions apply.

Further, the support rod 12 may be provided with a lifting connection portion 125, the template body 11 may be provided with a lifting hole 113, and the self-supporting cantilever template 10 may further include a lifting member 13, and the lifting member 13 can pass through. Pass through the pulling hole 113 and connect with the pulling connecting portion 125 to lift the support rod 12, thereby driving the support rod 12 to rotate relative to the formwork main body 11, so that the end of the support rod 12 away from the cantilever side 112 is located on the web 913 and the angle between the lower wing plate 916. In this way, when installing the formwork main body 11, the construction personnel can lift the pulling member 13 connected to the pulling connecting portion 125 on the support rod 12 on the composite beam 900, so as to drive the support rod 12 to move, so that the support end 120 abuts in the included angle between the web 913 and the lower wing plate 916, and its operation is relatively safe.

It should be noted that, in this embodiment, the pulling member 13 is a steel brazing rod, which can pass through the pulling hole 113 and can be detachably hooked to the pulling connecting portion 125. The construction personnel operate the lifting above the composite beam 900. 13 to complete the action of moving the support end 120 within the included angle between the web 913 and the lower wing plate 916 , of course, in other embodiments, the pulling member 13 can also be a steel rope or is arranged on the composite beam 900 Auxiliary pull-up drives etc.

Further, the number of formwork bodies 11 may be multiple, and the plurality of formwork bodies 11 are arranged in an array, and the cantilevered sides 112 of adjacent formwork bodies 11 are connected to each other, thereby improving the stability of the formwork bodies 11 .

It should be noted that, in this embodiment, the cantilever side 112 is provided with a latch hole (not shown in the figure), and the adjacent formwork main bodies are connected by detachably inserting the latch into the latching pin hole on the adjacent formwork main body 11 11 for easy installation and removal.

Further, the self-supporting cantilever formwork 10 may further include an anti-drop connecting rope 15, which can be connected to the cantilever side edge 112 and used to connect with the steel bars on the composite beam 900 for installation or When the formwork main body 11 is removed, the formwork main body 11 is prevented from falling suddenly, thereby further improving the safety.

The working principle of the self-supporting cantilever formwork 10 provided by the first embodiment of the present invention is as follows:

The two opposite sides on the formwork main body 11 are the connecting side 111 and the cantilevered side 112 respectively. One end is hinged to the cantilever side 112 , and the other end is used to abut against the angle between the lower wing plate 916 and the web 913 of the I-beam 910 corresponding to the formwork body 11 , so as to support the formwork body 11 through the support rod 12 In this way, when installing the formwork body 11, the connecting side 111 of the formwork body 11 of the hinged support rod 12 can be hinged to the outer edge of the upper wing plate 912, and then the support rod 12 can be lifted on the composite beam 900, In order to make the end of the support rod 12 away from the cantilever side 112 abut against the angle between the lower wing plate 916 and the web 913 of the corresponding I-beam 910, the connection can be disconnected when the formwork body 11 is disassembled. The connection between the side 111 and the upper wing plate 912 can lift the formwork main body 11, its installation and disassembly are relatively convenient, and the construction process does not require the construction personnel to perform formwork support and formwork under the I-beam 910. The process is also more secure.

In summary:

The first embodiment of the present invention provides a self-supporting cantilever formwork 10, which has the characteristics of convenient disassembly and assembly and safer construction.

Second embodiment:

Please refer to FIG. 4 , FIG. 5 and FIG. 6 . FIG. 4 is a schematic structural diagram of the formwork construction auxiliary device 20 provided by the second embodiment of the present invention. FIG. 5 is a schematic structural diagram of the formwork construction auxiliary device 20 provided by the second embodiment of the present invention when the formwork main body 11 is installed. FIG. 6 is a schematic structural diagram of the formwork construction auxiliary device 20 provided by the second embodiment of the present invention when the formwork main body 11 is disassembled.

The second embodiment of the present invention provides a formwork construction auxiliary device 20. The formwork construction auxiliary device 20 is used to assist in the installation of the self-supporting cantilever formwork 10, which also has the characteristics of convenient disassembly and assembly and safer construction.

The formwork construction auxiliary device 20 includes a construction crane 21 , the construction crane 21 is movably arranged on the composite beam 900 , and the construction crane 21 can be connected with the cantilever side 112 to hoist the formwork main body 11 for movement to install the formwork When the main body 11 is lifted, the formwork main body 11 is moved to the outer edge position of the upper wing plate 912 of the I-beam 910. When the formwork main body 11 is disassembled, the formwork main body 11 is prevented from falling by hoisting the formwork main body 11, thereby improving the formwork main body 11. The convenience and safety of disassembly and assembly, and the formwork main body 11 can also be hoisted to the composite beam 900 .

It should be noted that, in this embodiment, the construction crane 21 is a cantilever crane, which can be rotated so as to cooperate with the jib to drive the cantilevered formwork to move.

Further, the formwork construction auxiliary device 20 may further include a construction guide rail 22, the construction guide rail 22 is used to be installed on the composite beam 900, and the construction guide rail 22 is arranged along the extension direction of the composite beam 900, and the construction crane 21 is movably arranged on the construction guide rail 22. , so as to hoist the formwork main body 11 connected to the different positions of the composite beam 900 along the construction guide rail 22 .

In addition, the formwork construction auxiliary device 20 may further include a construction conveying vehicle 23 , which is movably arranged on the construction guide rail 22 , and can move along the construction guide rail 22 for transporting the formwork main body 11 .

When installing the formwork main body 11, the formwork main body 11 can be lifted from the construction transport vehicle to a position close to the outer edge of the upper wing plate 912 by the construction crane 21, so as to start the installation work of the self-supporting cantilever formwork 10. Connect the anti-falling connecting rope 15 to the steel bars on the composite beam 900 to prevent the formwork main body 11 from falling suddenly; when the connecting side 111 is close to the outer edge of the upper wing plate 912, the side edge 111 and the upper wing plate 912 are hingedly connected; The formwork main body 11 and the support rod 12 are pulled up by the pulling member 13 at the same time, so that the support rod 12 is supported at the right angle between the lower wing plate 916 of the I-beam 910 and the web 913, the formwork main body 11 is basically in place and the support rod 12 is lifted When the support function is reached, the construction personnel fine-tune the height of the formwork body 11 by rotating the telescopic adjustment part 123 so that the formwork body 11 is located at the preset position, and then connects with the adjacent formwork body 11, and removes the formwork body 11 and the construction crane 21. The steel wire 212 completes the installation of the formwork body 11 .

When dismantling the formwork main body 11, firstly connect the anti-drop connecting rope 15 to the anchor point on the poured bridge deck concrete 920 on the composite beam 900 to prevent the formwork from falling suddenly; then connect the cantilevered side of the formwork main body 11 112 is connected with the hoisting steel rope 212 of the construction crane 21, and then extends into the pulling member 13 through the auxiliary channel 921 to pull the connecting side 111 of the formwork main body 11, wherein the auxiliary channel 921 is set when the bridge deck concrete 920 is poured The through hole corresponding to the connecting side 111 is disconnected, and the connection between the connecting side 111 and the upper wing plate 912 is disconnected, and then the formwork body 11 is gradually lowered until the formwork body 11 is in a vertical state, as shown in Figure 6; Subsequently, the formwork body 11 is lifted up by the construction crane 21 and then placed on the construction transport vehicle, and transported by the construction transporter to another location for installation of the formwork body 11 to realize recycling.

The working principle of the formwork construction auxiliary device 20 provided by the second embodiment of the present invention is:

The self-supporting cantilever formwork 10 is transported by the construction truck, and the construction crane 21 lifts the self-supporting cantilever formwork 10 from the construction truck to a position close to the outer edge of the upper wing plate 912 so as to start the self-supporting cantilever formwork 10 installation work. When the formwork main body 11 is disassembled, the cantilevered side 112 of the formwork main body 11 is connected by the construction crane 21 to lift the formwork main body 11 to maintain the position of the formwork main body 11 , and the formwork main body 11 is lifted to the composite beam by the construction crane 21 On the construction transport vehicle on the 900, the construction transport vehicle transports it to another location for the installation of the formwork main body 11.

In summary:

The second embodiment of the present invention provides a formwork construction auxiliary device 20, which also has the characteristics of convenient disassembly and assembly and safer construction.

Third embodiment:

Please refer to FIG. 7 . FIG. 7 is a schematic flowchart of a part of the template construction process provided by the third embodiment of the present invention.

The third embodiment of the present invention provides a formwork construction process. The formwork construction process is applied to the auxiliary construction device in the above-mentioned embodiment to install and remove the self-supporting cantilever formwork 10. The formwork construction process also has the disassembly and assembly process. It is more convenient and safer to construct.

It should be noted that the basic principles and the technical effects of the formwork construction process provided in this embodiment are the same as those in the above-mentioned embodiments. corresponding content.

The formwork construction process includes:

Step S101 : lifting the formwork main body 11 to the outer edge of the upper wing plate 912 . In order to start the installation of the self-supporting cantilever formwork 10, and before installation, the anti-drop connecting rope 15 can be connected to the steel bars on the composite beam 900 to prevent the formwork body 11 from falling suddenly and improve safety.

Step S102 : hingedly connecting the side edge 111 and the outer edge of the upper wing plate 912 . When the connecting side edge 111 is close to the outer edge of the upper wing plate 912 , the side edge 111 and the upper wing plate 912 are hingedly connected, so as to facilitate the lower formwork body 11 and further improve the safety of installing the formwork body 11 .

Step S103 : Pull the support rod 12 , and make the end of the support rod 12 away from the formwork main body 11 abut within the included angle between the lower wing plate 916 and the web 913 . The formwork body 11 is supported by the support rod 12 , the formwork support action is relatively simple, and only needs to be operated on the composite beam 900 , and the safety is high. In addition, the construction personnel can also fine-tune the formwork body 11 by rotating the telescopic adjustment part 123 . height, so that the formwork main body 11 is located at the preset position, and then the adjacent formwork main body 11 is connected, and then the formwork main body 11 and the lifting wire 212 of the construction crane 21 are removed to complete the installation of the formwork main body 11 .

Please refer to FIG. 8 . FIG. 8 is a schematic flowchart of another part of the formwork construction process provided by the third embodiment of the present invention.

The formwork construction process may also include removing parts of the formwork body 11:

Step S104 : the cantilevered side 112 is pulled up, and the connecting side 111 is pulled up by the auxiliary channel 921 at the same time. Thereby, the position of the formwork body 11 is maintained. In addition, before the connecting side 111 is pulled up, the anti-drop connecting rope 15 can also be connected to the anchor point on the finished bridge deck concrete 920 on the composite beam 900 to prevent the formwork sudden drop.

Step S105: Disconnect the connection side 111 from the upper wing plate 912, and lower the connection side 111, so that the template body 11 is in a vertical state. As shown in FIG. 6 , it is convenient for the construction crane 21 to transfer the formwork body 11 .

Step S106 : lifting the self-supporting overhanging formwork 10 to a preset position to complete the dismantling of the self-supporting overhanging formwork 10 . The formwork main body 11 can be lifted to the composite beam 900 by the construction crane 21, placed on the construction transport vehicle, and transported by the construction transport vehicle to another location for installation of the formwork main body 11 to realize recycling.

The working principle of the self-supporting cantilever formwork 10 provided by the third embodiment of the present invention is:

The operation of lifting the formwork body 11 to the outer edge of the upper wing plate 912 is performed on the composite beam 900 ; the operation of hingedly connecting the side 111 and the outer edge of the upper wing plate 912 is performed on the composite beam 900 ; The operation of pulling the support rod 12 is performed so that the end of the support rod 12 away from the formwork main body 11 abuts within the included angle between the lower wing plate 916 and the web 913 . The operations are relatively simple, and only need to be performed on the composite beam 900, and the safety is high.

In summary:

The third embodiment of the present invention provides a formwork construction process, which also has the characteristics of convenient disassembly and assembly and safer construction.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the features of the above-mentioned embodiments can be combined with each other without conflict, and the present invention also Various modifications and variations are possible. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. Also, the embodiments are to be regarded as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and are therefore intended to fall within the meaning and scope of equivalents to the claims All variations of are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (10)

1. A self-supporting cantilever formwork, characterized in that it comprises a formwork main body (11) and a support rod (12); The two opposite sides on the formwork main body (11) are the connecting side (111) and the overhanging side (112) respectively, and the connecting side (111) and the I-beam on the side of the composite beam (900) (910) The outer edge of the upper wing plate (912) is hinged; One end of the support rod (12) is hinged to the cantilever side (112), and the other end is used to abut against the lower wing plate (916) and the web (913) of the I-beam (910). The main body (11) of the template is supported by the support rod (12). 2. The self-supporting cantilever formwork according to claim 1, characterized in that, one end of the support rod (12) away from the formwork main body (11) is a support end (120), and the support end (120) ) has a first abutting surface (121) and a second abutting surface (122) arranged at an included angle, and the first abutting surface (121) is used for contacting the side surface of the web (913) Abutting, the second abutting surface (122) is used for abutting with the top surface of the lower wing plate (916). 3. The self-supporting cantilever formwork according to claim 1, wherein a telescopic adjustment part (123) is provided at one end of the support rod (12) close to the formwork main body (11), and the support rod (12) Hinged with the cantilevered side edge (112) through the telescopic adjustment part (123); The telescopic adjustment portion (123) can be extended or shortened to adjust the height of the cantilevered side edge (112). 4. The self-supporting cantilever formwork according to claim 1, characterized in that, a pull-up connecting portion (125) is provided on the support rod (12), and a pull-up connection portion (125) is provided on the formwork main body (11) hole(113); The self-supporting cantilever formwork (10) further comprises a pulling member (13), and the pulling member (13) can pass through the pulling hole (113) and is connected with the pulling connecting portion (125) , to pull the support rod (12), thereby driving the support rod (12) to rotate relative to the template body (11), so that the support rod (12) is away from the end of the cantilevered side (112) Located within the included angle between the web (913) and the lower wing (916). 5. The self-supporting cantilever formwork according to claim 1, wherein the number of the formwork main bodies (11) is plural, and the plurality of the formwork main bodies (11) are arranged in an array, and the adjacent ones The cantilevered sides (112) of the formwork body (11) are connected to each other. 6. The self-supporting cantilever formwork according to claim 1, wherein the self-supporting cantilever formwork (10) further comprises an anti-drop connecting rope (15), and the anti-drop connecting rope (15) It can be connected with the cantilever side edge (112), and is used for connecting with the steel bars on the composite beam (900). 7. A formwork construction auxiliary device, characterized in that, for installing the self-supporting cantilever formwork (10) as described in any one of claims 1-6; The formwork construction auxiliary device (20) comprises a construction crane (21), the construction crane (21) is movably arranged on the composite beam (900), and can be connected with the cantilevered side (112) connected for hoisting the template body (11) for movement. 8. The formwork construction auxiliary device according to claim 7, wherein the formwork construction auxiliary device (20) further comprises a construction guide rail (22), and the construction guide rail (22) is used for being installed on the composite beam (900), and is arranged along the extension direction of the composite beam (900), the construction crane (21) is movably arranged on the construction guide rail (22), so as to be hoisted and connected to the construction rail (22) along the construction rail (22). The formwork main body (11) at different positions of the composite beam (900). 9. The formwork construction auxiliary device according to claim 8, characterized in that, the formwork construction auxiliary device (20) further comprises a construction conveying vehicle (23), and the construction conveying vehicle (23) is movably arranged on the The construction guide rail (22) is provided, and the construction conveying vehicle (23) can move along the construction guide rail (22) for transporting the formwork main body (11). 10. A formwork construction technique, characterized in that, applied to the formwork construction auxiliary device according to any one of claims 7-9, the formwork construction technique comprises: Lifting the formwork body (11) to the outer edge of the upper wing plate (912); Hinging the connecting side (111) and the outer edge of the upper wing plate (912); Pull the support rod (12), and make the end of the support rod (12) away from the formwork body (11) abut between the lower wing plate (916) and the web (913) The template body (11) is supported by the support rod (12).

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