BE1031199B1 - Additional reinforcement device for a climbing formwork system with a large upward tilt angle resistant to the self-weight of the concrete - Google Patents

Abstract

The present invention relates to the field of building construction and specifically discloses a supplementary reinforcement device for a large upward tilt angle climbing formwork system resisting the self-weight of concrete; comprising a pre-embedded anchor piece pre-installed in the already constructed segment and arranged on the same side as the climbing formwork system, a connecting steel profile located outside the climbing formwork system and connected to the climbing formwork system, and a support connection piece located near the already constructed segment on one side and connected to the pre-embedded anchor piece. This invention can effectively transfer the load to the already constructed segment, thereby avoiding the transfer of the load of the concrete to the climbing formwork system during the construction process, thereby ensuring the safety of construction.

Description

Additional reinforcement device for a climbing formwork system with a large upward tilt angle resistant to the self-weight of the concrete

Technical field

The present invention relates to the field of building construction, and more specifically, to an additional reinforcement device for a climbing formwork system with a large upward tilt angle resisting the self-weight of the concrete.

Prior art

With the progress of society, people's aesthetic tastes for bridge structures become more and more personalized, and the design of bridges becomes diversified. For the design of the main tower of cable-stayed bridges, the inclination angle of the tower space becomes larger and larger. Therefore, for the construction of the tower body of cable-stayed bridges, the most mature construction method at present is the use of hydraulic climbing formwork construction, but for the construction of the tower body with large inclination angle, due to the large self-weight of concrete when pouring inclined sections and the displacement of the center of gravity, the requirements for the rigidity and strength of the climbing formwork system become higher. If the entire self-weight force is transferred to the climbing formwork body, it would exceed the design limit of the formwork elements, so an additional reinforcement device resisting the self-weight of the concrete is designed separately on the upward face, which resists the self-weight force of the concrete during pouring through connecting steel profiles, reducing the transfer of the self-weight load of the concrete to the structure of the climbing formwork body as much as possible.

In practice, in addition to optimizing the structural design of the climbing formwork system, it is often accompanied by the use of more climbing formwork materials due to the increase in the rigidity requirements of the climbing formwork system, which makes the climbing formwork heavier, increases construction costs, and greatly reduces the existing safety, posing potential safety hazards.

Disclosure of the invention

The technical problem which the present invention aims to solve is to provide a supplementary reinforcement device for a large upward tilt angle climbing formwork system resisting the self-weight of concrete, which, through a connecting steel profile device, transfers the load to the already constructed segment, can effectively avoid the transfer of the load of the concrete to the climbing formwork system during the construction process, thereby ensuring the safety of construction.

The solution adopted by the present invention to solve the technical problem is:

An additional reinforcement device for a climbing formwork system with a large upward tilt angle resisting the self-weight of concrete, in which the climbing formwork system is installed on the outer side of the segment under construction, the climbing formwork system comprising a climbing formwork system and a hydraulic climbing formwork system connected to the climbing formwork system; the connecting steel profile device comprises a pre-embedded anchor piece pre-installed in the already constructed segment and arranged on the same side as the climbing formwork system, a connecting steel profile located outside the climbing formwork system and connected to the climbing formwork system, and a support connection piece located near the already constructed segment on one side and connected to the pre-embedded anchor piece.

When constructing the segment under construction, a frame will be installed in the construction area of the segment under construction to support the reinforcing steel at this stage, and then the climbing formwork system will be installed, and several groups of connecting steel profiles will be installed outside the climbing formwork system, by several groups of supporting connection pieces configured to match the connecting steel profiles one by one, they will be connected to the pre-embedded anchor pieces pre-installed on the already constructed segment in number equal to the supporting connection pieces; at the same time, the top of the connecting steel profile will be connected to the frame; after the completion of the concrete pouring of the segment under construction, the load due to the self-weight of the concrete of this segment will exert a force on the climbing formwork system, the connecting steel profiles being connected to the frame and the already constructed segment, thereby transferring this load force to the already constructed segment; thus avoiding the transfer of the concrete load to the hydraulic climbing formwork system during the construction process, ensuring construction safety.

In some possible embodiments, in order to effectively achieve the support and resistance to pulling of the connecting steel profiles;

The pre-embedded anchor piece is in two groups, including a support anchor piece connected to the bottom of the support connection piece, and an anti-pullout anchor piece located between the support anchor piece and the segment under construction.

In some possible embodiments,

The structure of the support anchor piece and the anti-pullout anchor piece is the same, both being climbing cones, comprising an anchor screw pre-installed in the already constructed segment, a cone mounted on the screw, and a locking bolt screwed coaxially to the cone; the large surface of the cone is on the same plane as the outer surface of the already constructed segment.

In some possible embodiments, in order to effectively achieve the connection of the support connection piece respectively to the support anchor piece and the anti-tear anchor piece;

The supporting connecting piece comprises a supporting steel profile connected to the bottom of the connecting steel profile by flange bolts, and two groups of brackets installed on the supporting steel profile and connected to the supporting anchor piece and the anti-pull anchor piece respectively.

In some possible embodiments, so that both groups of supports can provide support and resistance to pulling;

The two groups of brackets include a suspension bracket located at the end of the support steel profile away from the connecting steel profile, and an anti-tear bracket located between the suspension bracket and the connecting steel profile.

In some possible embodiments,

The suspension bracket comprises a base connected to the bottom of the supporting steel profile; a through hole suitable for being installed with a locking bolt is provided on the base.

In some possible embodiments,

The anti-tear bracket comprises a base located between the supporting steel profile and the already constructed segment, and a connecting rod passing through the supporting steel profile and connected to the base; a through hole suitable for use with a locking bolt is provided on the base.

In some possible embodiments, in order that the connection of the connecting steel profile to the frame can effectively achieve the transfer of the load due to the self-weight of the concrete to the already constructed segment;

A pull rod is installed on the top of the connecting steel profile, the axis of the pull rod forming an angle A with the horizontal direction, A is between 25 and 45°.

In some possible embodiments,

The support anchor piece and the anti-tear anchor piece are both in two groups and are configured to correspond to the suspension bracket and the anti-tear bracket respectively.

Compared to the prior art, the beneficial effects of the present invention:

In the present invention, the connection of the connecting steel profiles respectively to the already constructed segment and to the frame, allows, after completion of the concrete pouring of the segment under construction, to transfer the load due to the self-weight of the concrete to the already constructed segment, thus avoiding that the load due to the self-weight of the concrete acts directly on the climbing formwork system compared to the state of the art;

In the present invention, by pre-installing respectively in the already constructed segment the anti-tearing anchor piece and the support anchor piece, an effective support connection of the support connection piece is realized, — thereby realizing the support and fixing of the connecting steel profile;

The structure of the present invention is simple and practical.

Brief description of the drawings

Figure 1 is a structural diagram of the present invention; Figure 2 is an enlarged diagram of part A of Figure 1;

Figure 3 is an enlarged diagram of part B of Figure 1;

Figure 4 is a diagram of use of the present invention;

Reference signs: 10, segment already constructed; 20, segment under construction; 30, climbing formwork system; 40, framework; 50, hydraulic climbing formwork system; 1, pre-integrated anchor piece; 11, support anchor piece; 12, anti-pull-out anchor piece; 2, connecting steel profile; 3, support connection piece; 31, support steel profile; 32, suspension bracket; 33, anti-pull-out bracket.

Detailed description of the embodiments

In the present invention, unless explicitly and limitingly indicated otherwise, terms such as "installation", "connection", "fixing", etc., should be understood in a broad sense, for example, they may be a fixed connection or a detachable connection, or integrated; they may be directly connected or indirectly connected via an intermediary, may be the internal communication between two elements or the interaction relationship between two elements. The terms "first", "second" and similar terms in this application do not denote a specific order, quantity or importance, but are used to distinguish different components. Similarly, the terms "one" or "an" and the like do not denote a limitation of quantity, but indicate the existence of at least one. In the embodiments of this application, "and/or" describes an association relationship between associated objects, indicating that there may be three relationships, for example, A and/or B, may mean: A exists alone, A and B exist simultaneously, B exists alone. In describing the embodiments of this application, unless otherwise indicated, the meaning of "multiple" means two or more, for example, multiple positioning columns means two or more such columns. For those in the art, the above terms may be understood in the present invention according to specific situations.

The present invention is described in detail below.

As illustrated in Figures 1 to 4:

An additional reinforcement device for a climbing formwork system with a large upward tilt angle resisting the self-weight of concrete, wherein the climbing formwork system is installed on the outer side of the segment under construction 20, the climbing formwork system comprising a climbing formwork system 30 and a hydraulic climbing formwork system 50 connected to the climbing formwork system 30; the connecting steel profile device comprises a pre-embedded anchor piece 1 pre-installed in the already constructed segment 10 and arranged on the same side as the climbing formwork system 30, a connecting steel profile 2 located outside the climbing formwork system 30 and connected to the climbing formwork system 30, and a support connection piece 3 located near the already constructed segment 10 on one side and connected to the pre-embedded anchor piece 1; the top of the connecting steel profile 2 is connected to the frame 40.

When constructing the under-construction segment 20, a frame 40 will be installed in the construction area of the under-construction segment 20 to support the reinforcing steel at this stage, and then the climbing formwork system 30 will be installed, and several groups of connecting steel profiles 2 will be installed outside the climbing formwork system 30, by several groups of supporting connection pieces 3 configured to correspond one by one to the connecting steel profiles 2, they will be connected to the pre-embedded anchor pieces 1 pre-installed on the already constructed segment 10 in number equal to the supporting connection pieces 3; at the same time, the top of the connecting steel profile 2 will be connected to the frame 40; after the completion of the concrete pouring of the segment under construction 20, the load due to the self-weight of the concrete of this segment will exert a force on the climbing formwork system 30, the connecting steel profiles 2 being connected to the frame 40 and the already constructed segment 10, thereby transferring this load force to the already constructed segment 10; thereby avoiding the transfer of the load of the concrete to the hydraulic climbing formwork system 50 during the construction process, ensuring the safety of the construction.

In some possible embodiments, in order to effectively achieve the support and resistance to pulling of the connecting steel profiles 2;

The pre-integrated anchor piece 1 is in two groups, comprising a support anchor piece 11 connected to the bottom of the support connection piece 3, and an anti-pullout anchor piece 12 located between the support anchor piece 11 and the segment under construction 20.

The supporting anchor piece 11 serves to support the connecting steel profile 2, and the anti-pull-out anchor piece 12 acts as a tensile member, having good pull-out resistance capability.

In some possible embodiments,

The structure of the support anchor 11 and the anti-tear anchor 12 is the same, both being climbing cones, comprising an anchor screw pre-installed in the already constructed segment 10, a cone mounted on the screw, and a locking bolt screwed coaxially to the cone; the large surface of the cone is on the same plane as the outer surface of the already constructed segment 10.

The support anchor piece 11 and the anti-tear anchor piece 12 each comprise an anchor screw pre-installed in the already constructed segment 10, near the side of the connecting steel profile 2, the cone being mounted on the anchor screw, the axis of the cone being perpendicular to the outer surface of the already constructed segment 10 near the side of the connecting steel profile 2; the locking bolt is used to connect the support connection piece 3 to the support anchor piece 11 or the corresponding anti-tear anchor piece 12.

In some possible embodiments, in order to effectively achieve the connection of the support connection piece 3 to the support anchor piece 11 and the anti-tear anchor piece 12;

The support connecting piece 3 comprises a support steel profile 31 connected to the bottom of the connecting steel profile 2 by flange bolts, and two groups of brackets installed on the support steel profile 31 and connected to the support anchor piece 11 and the anti-tearing anchor piece 12 respectively.

The supporting steel profile 31 is connected to the bottom of the connecting steel profile 2 and its side close to the already constructed segment 10 is on the same plane, forming a space between the supporting steel profile 31 and the already constructed segment 10, the two groups of supports being located in this space and connected respectively to the supporting anchor piece 11 or the anti-tearing anchor piece 12.

The device is divided into two sections, the lower section (support connecting piece 3) being connected to the already constructed segment 10 by the pre-embedded anchor piece 1, and the upper section (connecting steel profile 2) being connected to the climbing formwork system 30. When forming, it is sufficient to remove the flange bolts used to connect the supporting steel profile 31 to the connecting steel profile 2, and the upper section (connecting steel profile 2 connected to the climbing formwork system 30) can move forward or backward with the climbing formwork system 30. When cyclically constructing the segments, it is sufficient to reinstall the supporting steel profile 31, the anti-pull bracket 33 and the suspension bracket 32.

In addition, the connecting steel profiles 2 and the supporting steel profiles 31 are made of lightweight and practical steel profile materials having a certain bending strength coefficient, such as double U-profiles or | profiles; they are connected to each other by flange bolts;

In some possible embodiments, so that both groups of supports can provide support and resistance to pulling;

As illustrated in FIGS. 1 to 3, the two groups of brackets comprise a suspension bracket 32 located at the end of the support steel profile 31 remote from the connecting steel profile 2, and an anti-tearing bracket 33 located between the suspension bracket 32 and the connecting steel profile 2.

As shown in FIG. 2, the suspension bracket 32 is connected to the support anchor piece 11, and the anti-pull-out bracket 33 is connected to the anti-pull-out anchor piece 12; thereby realizing the support and pulling resistance of the connecting steel profile 2, avoiding an unstable support situation under the load due to the self-weight of the concrete.

In some possible embodiments, in order to effectively realize the connection of the suspension bracket 32 to the support steel profile 31; the suspension bracket 32 comprises a base connected to the bottom of the support steel profile 31; a through hole suitable for being installed with a locking bolt is provided on the base.

When connecting, the through hole of the base is coaxially aligned with the threaded hole on the cone, and the base acts on the already constructed segment 10, the end of the locking bolt passing through the through hole to enter the threaded hole on the cone, and after tightening, realizing the connection of the base with the support anchor piece 11.

In some possible embodiments, in order to effectively achieve the connection of the anti-tear bracket 33 to the supporting steel profile 31;

As illustrated in FIG. 3, the anti-tear bracket 33 comprises a base located between the support steel profile 31 and the already constructed segment 10, and a connecting rod passing through the support steel profile 31 and connected to the base; a through hole suitable for use with a locking bolt is provided on the base.

The end of the connecting rod passing through the supporting steel profile and connected to the base, the other end of the connecting rod being equipped with a nut outside, after the anti-tearing bracket 33 is connected to the anti-tearing anchor piece 12 by the locking bolt, the nut is used to fix the connecting rod.

In some possible embodiments, in order that the connection of the connecting steel profile 2 to the frame 40 can effectively achieve the transfer of the load due to the self-weight of the concrete to the already constructed segment 10;

As shown in Figure 1, a pull rod is installed on the top of the connecting steel profile 2, the axis of the pull rod forming an angle λ with the horizontal direction, λ is between 25 and 45°.

In some possible embodiments, in order to ensure that each group of supporting steel profiles 31 can be efficiently connected to the already constructed segment 10;

The support anchor pieces 11 and the anti-tear anchor pieces 12 are both in two groups and are configured to correspond to the suspension bracket 32 and the anti-tear bracket 33, respectively.

As shown in FIG. 4, when in use, the connecting steel profile 2 is installed outside the climbing formwork system 30, the bottom of the connecting steel profile 2 is connected to the supporting steel profile 31, and the supporting steel profile 31 is respectively connected to the anti-pull bracket 33 and the suspension bracket 32, which are pre-installed in the already constructed segment 10, and at the same time, the pull rod on the top of the connecting steel profile 2 is connected to the frame 40 by a cable, and then the concrete construction in the segment under construction 20 is carried out; after the concrete strength reaches the formwork requirements, the anti-pull-out bracket 33 and the anti-pull-out anchor piece 12, the suspension bracket 32 and the support anchor piece 11, the support steel profile 31 and the connecting steel profile 2, the pull rod and the frame 40 are separated respectively; then, the hydraulic climbing formwork system 50 can be used to raise the connecting steel profile 2 and the climbing formwork system 30 to the next segment under construction, to carry out the construction of the next segment, until all the segments are completely constructed.

The present invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this description, as well as to any new step or combination of steps in any method or process described.

Claims (9)

Claims 1. An additional reinforcement device for a climbing formwork system with a large upward tilt angle resisting the self-weight of concrete, wherein the formwork system is installed on the outer side of the segment under construction, the formwork system comprising a climbing formwork system and a hydraulic climbing formwork system connected to the climbing formwork system; characterized in that it comprises a pre-integrated anchoring piece installed in the already constructed segment and arranged on the same side as the climbing formwork system, a connecting steel profile located outside the climbing formwork system and connected to the climbing formwork system, and a support connection piece close to the side of the already constructed segment and connected to the pre-integrated anchoring piece. 2. The additional reinforcement device for a climbing formwork system with a large upward tilt angle resisting the self-weight of concrete according to claim 1, characterized in that the pre-integrated anchoring piece comprises two assemblies, comprising a support anchoring piece connected to the bottom of the support connection piece, and an anti-pull-out anchoring piece located between the support anchoring piece and the segment under construction. 3. The additional reinforcement device for a climbing formwork system with a large upward inclination angle resistant to the self-weight of concrete according to claim 2, characterized in that the support anchor piece and the anti-pullout anchor piece have the same structure and are both conical, comprising an anchor screw pre-integrated in the already constructed segment, a cone mounted on the screw, and a locking bolt screwed coaxially with the cone; the large surface of the cone is on the same plane as the outer surface of the already constructed segment. 4. The additional reinforcement device for a large upward tilt angle climbing formwork system resisting the self-weight of concrete according to claim 3, characterized in that the support connection piece comprises a support steel profile connected to the bottom of the connecting steel profile, and two sets of brackets installed on the support steel profile and connected respectively to the support anchor piece and the anti-pull anchor piece. 5. The additional reinforcement device for a climbing formwork system with a large upward tilt angle resisting the self-weight of the concrete according to claim 4, characterized in that the two sets of supports comprise a suspension support located at the end of the support steel profile remote from the connecting steel profile, and an anti-tearing support located between the suspension support and the connecting steel profile. 6. The additional reinforcement device for a climbing formwork system with a large upward tilt angle resisting the self-weight of concrete according to claim 5, characterized in that the suspension bracket comprises a base connected to the bottom of the supporting steel profile; a through hole adapted to be installed with the locking bolt is provided on said base. 7. The additional reinforcement device for a climbing formwork system with a large upward tilt angle resisting the self-weight of the concrete according to claim 5, characterized in that the anti-pull-out support comprises a base located between the supporting steel profile and the already constructed segment, and a connecting rod passing through the supporting steel profile and connected to the base; a through hole adapted to be used with the locking bolt is provided on said base. 8. The additional reinforcement device for a climbing formwork system with a large upward inclination angle resisting the self-weight of concrete according to any one of claims 1 to 7, characterized in that a pull rod is installed on the top of the connecting steel profile, the angle formed by the axis of the pull rod and the horizontal direction being A, A is between 25 and 45°. 9. The additional reinforcement device for a climbing formwork system with a large upward inclination angle resisting the self-weight of concrete according to any one of claims 5 to 7, characterized in that the support anchoring pieces and the anti-tearing anchoring pieces are both in two sets and are arranged in correspondence with the suspension bracket and the anti-tearing bracket, respectively.