CN116397881A - A formwork support system for a cantilevered structure at a slope position and its application method - Google Patents

Abstract

The invention relates to the technical field of constructional engineering, and particularly discloses a formwork support system of a slope position overhanging structure and a use method thereof, wherein the formwork support system is arranged in a fertilizer groove formed between the outer side of a basement and a slope and is used for supporting the bottom of the overhanging structure; the scaffold comprises a first supporting component arranged on the top surface of a foundation, a second supporting component arranged on the slope of a slope, and a scaffold which is arranged on the first supporting component and the second supporting component and is hinged with the first supporting component and the second supporting component; according to the invention, the load of the cantilever structure is transferred through the inclined surfaces of the foundation and the side slope, and part of the load can be uniformly transferred to the side slope through the arrangement of the steel plates in the transfer process, so that the condition of concentrated load transfer can not occur, and the condition of large deformation of individual parts of the scaffold is avoided; the invention can effectively ensure the consistent deformation of the scaffold through the uniform transmission of the load.

Description

A formwork support system for a cantilevered structure at a slope position and its application method

technical field

The invention relates to the technical field of construction engineering, in particular to a formwork support system for a cantilevered structure at a side slope and a method for using the same.

Background technique

In the current reinforced concrete buildings, there are often cantilevered structural shapes, some of which are beyond the range of the basement roof, and will be located at the edge of the foundation pit, the slope, the fertilizer tank, etc., and the formwork supporting the scaffolding of the cantilevered structure at this position needs to be fertilized The slots and other positions shall be backfilled before construction.

However, the construction period is tight during the on-site construction process, and the backfilling needs a long period. This part of the scaffolding can only be placed on the I-beam on the basement roof and side slope, as shown in Figure 6. This kind of scheme has the following disadvantages question:

1. It can only be used in the position where the width of the fertilizer tank is small, and the I-beam needs to have a large cross-section and a large deflection in the middle;

2. The corners of the basement roof structure with I-beams are stressed and easily damaged;

3. The downward force on the slope increases the force in the sliding direction and increases the risk of collapse;

4. The compression deformation of the basement roof structure is smaller than that of the slope, and the I-beam will be skewed to the side of the slope in the later stage, increasing the risk factor;

5. It is necessary to add a layer of hard protection under the I-beam, which increases the cost.

Contents of the invention

The technical problem to be solved by the present invention is to provide a formwork support system for a cantilevered structure at a side slope and its use method, to realize the transfer of the load of the cantilevered structure through the foundation and the inclined surface of the side slope, and during the transfer process, through the setting of the steel plate Part of the load can be evenly transmitted to the slope without concentrated load transmission, thereby avoiding the large deformation of individual parts of the scaffold;

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

A formwork support system for a cantilevered structure at a side slope, which is installed in the fertilizer tank formed between the outside of the basement and the side slope and used to support the bottom of the cantilevered structure; it includes a supporting component installed on the top surface of the foundation , the second support component installed on the slope slope, and the scaffold installed on the first support component and the second support component and hinged with the first support component and the second support component.

Compared with the prior art, the present invention realizes the force transmission through the scaffold acting on the slope and the foundation. Compared with the prior art, the I-beam is directly used as the bottom support of the scaffold, and the present invention combines the cantilever structure The load is evenly transmitted to the foundation and slope, and the force transmission direction conforms to the design force state of the foundation and slope, which ensures the safety and reliability of the support system and the safety and stability of the slope;

In some possible implementations, the bottom of the scaffold part can be effectively realized to act on the block, so that the load can be transmitted to the foundation;

The supporting assembly includes a block set on the top surface of the foundation and located outside the basement, and a plurality of sets of support seats mounted on the block and hinged to the bottom of the scaffolding.

In some possible implementations, it is possible to effectively realize that part of the bottom of the scaffold can act on the slope, so that the load can be transmitted to the foundation;

The supporting assembly 2 includes supporting pads installed on the slope, and multiple sets of supporting seats 2 installed on steel plates and hinged to the bottom of the scaffold.

In some possible implementations, in order to effectively disperse the load transmitted to the slope on the entire slope and avoid the occurrence of load concentration;

The support pad includes a concrete layer arranged on the slope, a steel plate installed on the concrete layer, and an anchor rod whose one end extends into the slope and the other end passes through the concrete layer to connect with the steel plate.

In some possible implementations, in order to effectively realize the anti-overturning of the scaffold;

One end of the anchor rod that does not extend into the slope is connected with the scaffold.

In some possible implementations, in order to ensure that the deformation of the scaffold is as small as possible and the deformation is consistent;

An I-beam is arranged on the steel plate, and the support seat 2 is installed on the I-beam; the I-beam is arranged in multiple groups along the Y-axis direction.

In some possible implementations, in order to enable the support seat 1 and the support seat 2 to be effectively installed on slopes with different inclination angles and the top surface of the block platform, and to realize effective support and connection for scaffolding;

The structure of the support seat 1 is the same as that of the support seat 2; it includes a base, a hinged support on the installation base, a support rod with one end connected to the hinged support and the other end connected to the scaffold, sleeved on the outside of the support rod and along the support rod. A support plate that moves in the long direction.

In some possible implementations,

The scaffold includes multiple sets of uprights arranged along the Z-axis direction and connected to the support base 1 and the support base 2, multiple sets of cross bars arranged along the X-axis direction and connected with the uprights respectively, and a movable pole mounted on the top of the uprights. Adjust the support rod.

In some possible implementations, in order to effectively realize the connection between the vertical rod and the hinged support with different relative distances for different positions;

The articulated support includes two sets of steel wing plates installed on the base and arranged in parallel along the Y-axis direction, and a screw rod with one end passing through the connecting steel wing plates and arranged along the Y-axis direction; the support rod is sleeved on the outside of the screw rod and Located between two sets of steel wings.

A method for using a formwork support system for a cantilevered structure at a slope position, specifically comprising the following steps:

Step S1: according to the spacing of vertical rod, calculate the length and quantity of I-beam, the area of steel plate, the quantity of support seat one and support seat two;

Step S2: the foundation is located in the part of the construction in the fertilizer tank, and the long direction is along the Y-axis direction, and the stopper and the support seat are installed;

Step S3: Lay steel plate on the side slope, carry out I-beam installation welding, support seat two installation on steel plate;

Step S4: Scaffolding is installed, the support rods in the support seat 1 and the support seat 2 are respectively set in the corresponding vertical rods, and the support plate is abutted against the bottom of the vertical rod by adjusting the position of the support plate along the Z-axis direction;

Step S5: cantilever structure formwork engineering construction;

Step S6: Use 1.2 times the structural load to preload the formwork of the cantilevered structure for seven days. After the bearing capacity and deformation meet the requirements, enter the next process of construction.

Compared with prior art, the beneficial effect of the present invention:

Compared with the prior art, the present invention realizes the transmission of the load of the cantilevered structure through the slope of the foundation and the slope. During the transmission process, through the arrangement of the steel plate, part of the load can be evenly transmitted to the slope without concentrated load transmission. , thereby avoiding the large deformation of individual parts of the scaffold; in the present invention, the uniform transmission of the load can effectively ensure that the deformation of the scaffold is consistent;

In the present invention, the supporting rod is connected to the base through a hinged seat. When in use, the hinged connection between the two can be applied to slopes with different inclination angles; this makes the device more practical;

Compared with the prior art, the present invention does not transmit the load of the cantilever structure to the top surface of the slope and the corner of the basement roof near the side slope, thereby effectively avoiding the occurrence of the slope due to the vertical downward load. The phenomenon of collapse, and at the same time, because it does not contact the basement roof, damage to the corners of the roof is avoided; compared with the prior art, the construction safety is effectively guaranteed.

Description of drawings

Fig. 1 is the elevation structure schematic diagram of the present invention;

Fig. 2 is the enlarged schematic diagram of place A in Fig. 1;

Fig. 3 is the enlarged schematic diagram of place B in Fig. 1;

Fig. 4 is a schematic structural view of a support seat 1 or a support seat 2 in the present invention;

Fig. 5 is the top view structure schematic diagram of support seat one, support seat two, block platform, side slope in the present invention;

Fig. 6 is a support system in the prior art;

Among them: 1. Slope; 2. Support component 1; 21. Block platform; 22. Support component 2; 221. Base; 222. Steel wing plate; 223. Screw; 224. Support rod; 225. Support plate; 3. Support component two; 31, concrete layer; 32, anchor rod; 33, steel plate; 34, I-beam; 10, scaffolding; 101, vertical rod; 102, cross bar.

Detailed ways

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be directly connected or indirectly connected through an intermediary, it can be the internal communication of two elements or the interaction relationship between two elements. The "first", "second" and similar words mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Likewise, words like "a" or "one" do not denote a limitation in number, but indicate that there is at least one. In the implementation of this application, "and/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which may mean: A exists alone, A and B exist simultaneously, and B exists alone. three conditions. In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more. For example, a plurality of positioning posts refers to two or more positioning posts. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The present invention will be described in detail below.

As shown in Figure 1-Figure 5:

A formwork support system for a cantilevered structure at the side slope 1, installed in the fertilizer tank formed between the outside of the basement and the side slope 1, and used to support the bottom of the cantilevered structure; including the support installed on the top surface of the foundation The first component 2, the second support component 322 installed on the slope of the slope 1, and the scaffold 10 installed on the first support component 2 and the second support component 322 and hinged with the first support component 2 and the second support component 322.

Compared with the prior art, the present invention realizes the force transmission through the scaffold 10 acting on the slope 1 and the foundation. Compared with the prior art, the I-beam 34 is directly used as the bottom support of the scaffold 10. The present invention will The load of the cantilever structure is evenly transmitted to the foundation and slope 1, and the force transmission direction conforms to the design force state of the foundation and slope 1, which ensures the safety and reliability of the support system and the safety of the slope 1 stable;

In some possible implementations, the bottom part of the scaffold 10 can be effectively implemented to act on the block 21, so that the load can be transmitted to the foundation;

The support assembly one 2 includes a block 21 arranged on the top surface of the foundation and located outside the basement, and multiple sets of support seats one mounted on the block 21 and hinged to the bottom of the scaffold 10 .

In some possible implementations, it is effectively realized that part of the bottom of the scaffold 10 can act on the slope 1, so that the load can be transmitted to the foundation;

The supporting assembly 2 322 includes a supporting pad installed on the slope 1 , and multiple sets of supporting seats 2 installed on the steel plate 33 and hinged to the bottom of the scaffold 10 .

In some possible implementations, in order to effectively enable the load transmitted to the slope 1 to be distributed on the entire slope 1, avoiding the occurrence of load concentration;

The support plate includes a concrete layer 31 arranged on the slope 1, a steel plate 33 installed on the concrete layer 31, and an anchor rod with one end extending into the slope 1 and the other end passing through the concrete layer 31 and connected to the steel plate 33 32.

The concrete layer 31 is a steel wire mesh concrete layer 31, and the collapsing phenomenon of the slope 1 can be avoided through the cooperation of the anchor rod 32 and the concrete layer 31;

In some possible implementations, in order to effectively realize the anti-overturning of the scaffold 10;

One end of the anchor rod 32 that does not extend into the slope 1 is connected to the scaffold 10 .

In some possible implementations,

Described scaffolding 10 comprises multiple sets of upright bars 101 arranged along the Z-axis direction and connected with support base one and support base two, multiple sets of cross bars 102 arranged along the X-axis direction and connected with upright bars 101 respectively, and mounted on the uprights. Adjustable support rod 224 on top of rod 101.

The adjustable support rod 224 is used for the scaffold 10 to support the formwork at the bottom of the cantilevered structure; the adjustable support rod 224 can be adjusted in length in the Z-axis direction;

Preferably, the anchor bar 32 and the corresponding cross bar 102 in the cross bar 102 can be connected. Through the connection of the two, the support for the scaffold 10 will be strengthened, thereby preventing the scaffold 10 from overturning to the side of the slope 1 Case;

In some possible implementations, in order to ensure that the amount of deformation of the scaffold 10 is as small as possible and the deformation is consistent;

An I-beam 34 is arranged on the steel plate 33, and the support seat 2 is installed on the I-beam 34; the I-beam 34 is arranged in multiple groups along the Y-axis direction.

As shown in Figure 5, each group of I-beams 34 will effectively support a row of vertical poles 101 located on the side slope 1 and along the X-axis direction through the support seat 2, and multiple groups of I-beams 34 will realize the support for multiple rows. Upright pole 101 supports;

The long direction of the block 21 is set along the Y-axis direction, and is used to support the vertical pole 101 located above the foundation;

When in use, the load of the cantilever structure is transmitted to the block 21 and the I-beam 34 respectively through the scaffold 10, wherein the I-beam 34 transmits the load to the steel plate 33, and the load is dispersed by the steel plate 33 and then transmitted to the concrete layer 31 to avoid The load is concentrated; at the same time, part of the load will be transmitted to the foundation through the retaining platform 21, so that the load can be evenly transmitted to the foundation and the slope 1; compared with the prior art, there will be no downward load directly applied to the slope 1, The risk of the collapse of side slope 1 is reduced. The force of side slope 1 is the entire surface of the slope, and the force is more uniform. The corners of the basement roof will not be subjected to the load of the overhanging structure, so there will be no damage;

In some possible implementations, in order to enable the support seat 1 and the support seat 2 to be effectively installed on the top surface of the slope 1 and the block 21 at different inclination angles, and to realize effective support and connection for the scaffold 10;

As shown in Figure 2 and Figure 3, the structure of the support base 1 is the same as that of the support base 2; it includes a base 221, a hinged support on the installation base 221, a support connected to the hinged support at one end and connected to the scaffold 10 at the other end The rod 224 and the support disc 225 are sleeved on the outside of the support rod 224 and move along the length direction of the support rod 224 .

The reason why the structure of the support seat 1 and the support seat 2 is the same is to make the production and processing simpler and more convenient; it can also reduce the requirement for the top surface of the block 21 to be flat, thereby speeding up the construction efficiency;

In some possible implementations, in order to effectively realize the connection between the vertical rod 101 and the hinged support with different relative distances for different positions;

As shown in FIG. 4 , the hinged support includes two sets of steel wings 222 installed on the base 221 and arranged in parallel along the Y-axis direction, and a screw rod 223 with one end passing through the connecting steel wings 222 and arranged along the Y-axis direction; The support rod 224 is sleeved on the outside of the screw rod 223 and located between the two sets of steel wings 222 .

The two groups of steel wing plates 222 are provided with through holes for the screw rods 223 to pass through. The two groups of through holes are arranged coaxially. After passing through a group of through holes, two groups of through holes, and a group of through holes, double nuts are used for fastening.

When in use, the base 221 is installed on the I-beam 34. Since the support rod 224 is sleeved on the outside of the screw rod 223, the support rod 224 and the base 221 will be able to rotate around the screw rod 223, so that the base 221 can adapt to different sides. The installation of the slope 1, at the same time, ensure that the support rod 224 can be guaranteed to be in the vertical rod 101 of the scaffold 10, and realize the effective support for the vertical rod 101 through the support plate 225;

The present invention is not affected by the fertilizer tank formed between the outside of the basement and the side slope 1; the I-beam 34 will not be inclined to the side slope 1 in the later stage because the compression deformation of the basement roof structure is smaller than that of the side slope 1 , and then the possibility of increasing the risk factor; effectively ensuring the construction safety.

The method for using the above-mentioned device specifically includes the following steps:

Step S1: according to the spacing of vertical rod 101, calculate the length and quantity of I-beam 34, the area of steel plate 33, the quantity of support seat one and support seat two;

It should be noted that when arranging the vertical rod 101, it is necessary to avoid the position of the anchor rod 32, so as to prevent the I-beam 34 from being unable to be installed;

Step S2: the foundation is located in the part of the fertilizer tank, and the long direction of the construction is along the Y-axis direction. The stopper 21 and the support seat are installed;

Step S3: Lay steel plate 33 on slope 1, carry out I-beam 34 installation welding, supporting base two installations on steel plate 33;

Step S4: Scaffolding 10 is installed, and the support rods 224 in the support seat one and the support seat two are respectively set in the corresponding vertical rods 101, and the position of the support plate 225 is adjusted along the Z-axis direction so that the support plate 225 is aligned with the vertical rod 101. Bottom abutment;

Step S5: cantilever structure formwork engineering construction;

Step S6: Use 1.2 times the structural load to preload the formwork of the cantilevered structure for seven days. After the bearing capacity and deformation meet the requirements, enter the next process of construction.

The present invention is not limited to the foregoing specific embodiments. The present invention extends to any new feature or any new combination disclosed in this specification, and any new method or process step or any new combination disclosed.

Claims (10)

1. A formwork support system for a cantilevered structure at a side slope, characterized in that it is installed in the fertilizer tank formed between the outside of the basement and the side slope and is used to support the bottom of the cantilevered structure; including being installed on the foundation The first support component on the top surface, the second support component installed on the slope slope, and the scaffold installed on the first support component and the second support component and hinged with the first support component and the second support component. 2. The formwork support system of a cantilevered structure at a slope position according to claim 1, wherein the support assembly includes a block set on the top surface of the foundation and located outside the basement, and multiple groups are installed on A support seat one hinged to the bottom of the scaffold on the block platform. 3. The formwork support system of a cantilevered structure at a side slope position according to claim 2, wherein said support assembly two includes support pads installed on the side slope, multiple groups are installed on steel plates and are connected with The second hinged support seat at the bottom of the scaffold. 4. the formwork supporting system of a kind of side slope position cantilever structure according to claim 3, is characterized in that, described support plate comprises the concrete layer that is arranged on the side slope, the steel plate that is installed on the concrete layer and One end extends into the slope and the other end passes through the concrete layer to connect with the steel plate. 5 . The formwork support system for a cantilevered structure at a side slope according to claim 4 , wherein the end of the anchor rod that does not extend into the side slope is connected to a scaffold. 6 . 6. The formwork support system of a cantilevered structure at a slope position according to claim 3, wherein an I-beam is arranged on the steel plate, and the support base 2 is installed on the I-beam ; The I-beams are in multiple groups and arranged along the Y-axis direction. 7. The formwork support system of a cantilevered structure at a slope position according to any one of claims 3-6, wherein the structure of the support seat one and the support seat two is the same; The hinged support, one end of which is connected to the hinged support and the other end is connected to the scaffolding, and the support plate is set on the outside of the support rod and moves along the long direction of the support rod. 8. The formwork support system of a cantilevered structure at a slope position according to claim 7, wherein the scaffold includes multiple sets of vertical rods arranged along the Z-axis direction and connected to the first support seat and the second support seat , multiple sets of cross bars arranged along the X-axis direction and respectively connected to the vertical rods, and adjustable support rods installed on the top of the vertical rods. 9. The formwork support system of a cantilevered structure at a slope position according to claim 8, wherein the hinged support includes two sets of steel wing plates installed on the base and arranged in parallel along the Y-axis direction, One end passes through the screw rod connected with the steel flanges and arranged along the Y-axis direction; the support rod is sleeved on the outside of the screw rod and located between two sets of steel flanges. 10. A method for using a formwork support system for a cantilevered structure at a slope position, characterized in that it specifically comprises the following steps: Step S1: according to the spacing of vertical rod, calculate the length and quantity of I-beam, the area of steel plate, the quantity of support seat one and support seat two; Step S2: the foundation is located in the part of the construction in the fertilizer tank, and the long direction is along the Y-axis direction, and the stopper and the support seat are installed; Step S3: Lay steel plate on the side slope, carry out I-beam installation welding, support seat two installation on steel plate; Step S4: Scaffolding is installed, the support rods in the support seat 1 and the support seat 2 are respectively set in the corresponding vertical rods, and the support plate is abutted against the bottom of the vertical rod by adjusting the position of the support plate along the Z-axis direction; Step S5: cantilever structure formwork engineering construction; Step S6: Use 1.2 times the structural load to preload the formwork of the cantilevered structure for seven days. After the bearing capacity and deformation meet the requirements, enter the next process of construction.

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