CN109113183B - Construction method based on large-span self-forming type suspension cable structure - Google Patents

Abstract

The invention provides a construction method based on a large-span self-forming type suspension cable structure, which comprises the following steps: and installing a foundation on the foundation. Mounting one end of a plurality of hinged supports on a foundation; a plurality of anchors are embedded in the foundation. And the bottom of one end of the counterweight body is arranged on the other end of the winch support so as to be connected with the foundation through the winch support. And the hydraulic jack is arranged at the bottom of the other end of the counterweight body. And performing detail construction on the counterweight body. The hydraulic jack is pressurized so that the weight body is jacked up and rotates around the winching support. One end of each main inhaul cable is anchored on the upper portion of one end of the first counterweight body, and the other end of each main inhaul cable is anchored on the upper portion of one end of the second counterweight body. And connecting one end of each stabilizing cable to the corresponding anchor ingot, and connecting the other end of each stabilizing cable to the bottom of the other end of the counterweight body. And decompressing the hydraulic jack until the hydraulic jack is not stressed by the pressure of the counterweight body any more and removing the hydraulic jack, so that the counterweight body is reset and the main inhaul cable is tensioned.

Description

Construction method based on long-span self-forming suspension cable structure

technical field

The invention relates to a construction method for a large-span structure, in particular to a construction method based on a large-span self-forming suspension cable structure, and belongs to the field of building structures.

Background technique

With the continuous development of building technology, people's demand for large-scale buildings is becoming stronger and stronger, and a large-span building structure has appeared in the prior art, and its application has become more and more extensive. The structural forms of traditional large-span buildings mainly include folded plate structure, grid structure, cantilever structure, shell structure, tent tension structure, and inflatable structure.

The suspension cable structure is a load-bearing structure formed by flexible cables and their edge members. The material of the cable can be wire bundles, wire ropes, steel hinges, chains, round bars, and other wires with good tensile properties. Suspension cable structures are widely used in bridge structures, and for housing construction, they are suitable for large-span buildings, such as sports buildings (gymnasiums, swimming pools and sports fields, etc.), industrial workshops, cultural life buildings (exhibition halls, acrobatics halls, and department stores, etc. ) and special structures, etc. The cable suspension structure has reasonable stress, which can maximize the characteristics of the material, greatly increase the span of the building structure, and reduce the self-weight of the structure at the same time. However, as the span increases, the limitations of the cable dome and other structures designed by using the suspension cable structure become more and more obvious, and the problem of component stability becomes more and more prominent.

The main construction methods of traditional suspension cable structures include high-altitude bulk method, strip or block installation method, integral hoisting method, integral lifting method, integral jacking method and folding and unfolding installation method. The same, so many factors should be paid attention to in the construction process, such as construction materials, machinery, construction site conditions, project quality and construction costs. On the other hand, the steps of traditional construction methods are more complicated, the construction period is longer, and the requirements for construction machinery are also relatively high.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention adopts the following technical solutions:

The invention provides a construction method based on a long-span self-forming suspension cable structure, which is used for installing the long-span self-forming suspension cable structure on a preset foundation, thereby constructing a building with a long-span structure, It is characterized in that, comprises the following steps:

Step S1, install the foundation on the foundation;

Step S2, one end of the multiple hinge supports is installed on the foundation, and the hinge supports include multiple pairs of the first hinge supports and the second hinge supports installed in pairs;

Step S3, burying a plurality of anchor ingots on the foundation;

Step S4, the bottom of one end of the counterweight body is installed on the other end of the hinged support, so as to be connected with the foundation through the hinged support, so that the counterweight body can rotate around the hinged support, and the counterweight body includes a plurality of pairs installed in pairs. a first counterweight and a second counterweight;

Step S5, the hydraulic jack is installed on the bottom of the other end of the counterweight to support the counterweight;

Step S6, carry out detailed construction on the counterweight;

Step S7, pressurizing the hydraulic jack, so that the counterweight body is jacked up and rotated around the hinge support;

Step S8, one end of the plurality of main cables is anchored on the upper part of one end of the first counterweight body, and the other end is anchored on the upper part of one end of the second counterweight body;

Step S9, connecting one end of the plurality of stabilizing cables to the corresponding anchor, and the other end connecting to the bottom of the other end of the counterweight;

Step S10, the hydraulic jack is decompressed until the hydraulic jack is no longer under the pressure of the counterweight, and the hydraulic jack is removed, so that the counterweight is reset and the main cable is tightened.

Wherein, the bottom of the opposite end of the first counterweight body and the second counterweight body is installed on the first hinge support, so that the first counterweight body can rotate around the first hinge support and generate a first overturning moment, and the second counterweight body can rotate around the first hinge support. The bottom of the end of the weight body opposite to the first counterweight body is mounted on the second hinge support, so that the second counterweight body can rotate around the second hinge support and generate a second overturning moment opposite to the direction of the first overturning moment. The main cable is used to connect the first counterweight body and the second counterweight body and form a tensile force, so that the first overturning moment and the second overturning moment can be balanced. The anchor bolts are embedded on the foundation below the other end of the counterweight body corresponding to the stabilizing cables.

The present invention provides a construction method based on a large-span self-forming suspension cable structure, and may also have the feature that the foundation is a pile foundation.

The present invention provides a construction method based on a large-span self-forming suspension cable structure, and may also have the feature that the foundation is casted by one-time forming of concrete.

The present invention provides a construction method based on a large-span self-forming suspension cable structure, and may also have the feature that the counterweight body is made of reinforced concrete.

The present invention provides a construction method based on a large-span self-forming suspension cable structure, which may also have the feature that the counterweight body is a boss with a triangular cross-sectional area.

The present invention provides a construction method based on a long-span self-forming suspension cable structure, and may also have the feature that each of the main stay cables is parallel to each other and is perpendicular to the extension direction of the main stay cables. The directions are evenly spaced to install.

Invention action and effect

The construction method based on the large-span self-forming suspension cable structure provided according to the present invention includes installing a foundation on a foundation, and installing one end of a plurality of hinge supports on the foundation, wherein the hinge supports include a plurality of pairs of first A twisted support and a second twisted support embed a plurality of anchors on the foundation. Because the bottom of one end of the counterweight body is installed on the other end of the hinge support, and is connected with the foundation through the hinge support, the counterweight body can rotate around the hinge support. The counterweight body includes a plurality of pairs of first counterweight bodies and second counterweight bodies installed in pairs. Since the bottom of the opposite end of the first counterweight body and the second counterweight body is mounted on the first hinge support, the first counterweight body can rotate around the first hinge support and generate the first overturning moment. The bottom of the end of the weight body facing the first counterweight body is mounted on the second hinge support, so that the second counterweight body can rotate around the second hinge support and generate a second overturning moment opposite to the direction of the first overturning moment. Since the hydraulic jack is installed at the bottom of the other end of the counterweight body, the counterweight body can be supported during construction. Due to the detailed construction of the counterweight body, it is possible to increase the use function required for the building to the counterweight body. As the hydraulic jack is pressurized, the counterweight is lifted up and rotated around the hinge support. Since one end of the plurality of main cables is anchored to the upper part of one end of the first counterweight body, and the other ends are anchored to the upper part of one end of the second counterweight body, the main cables are used to connect the first counterweight body and the second counterweight body and form tension, thus enabling the balance of the first overturning moment and the second overturning moment. Because one end of the plurality of stabilizing cables is connected to the corresponding anchor bolts, and the other ends are connected to the bottom of the other end of the counterweight body, the anchor bolts can cooperate with the stabilizing cables to stabilize the counterweight body. By depressurizing the hydraulic jack until the hydraulic jack is no longer under pressure from the counterweight and removing the hydraulic jack, it is possible to reset the counterweight and tension the main cable.

Description of drawings

1 is a front view of a large-span self-forming suspension cable structure of the present invention;

Fig. 2 is the top view of the large-span self-forming suspension cable structure of the present invention;

Fig. 3 is the structural representation of the large-span self-forming suspension cable structure of the present invention;

Fig. 4 is the construction schematic diagram of the foundation in the embodiment;

Fig. 5 is the construction schematic diagram of the hinge support in the embodiment;

Fig. 6 is the construction schematic diagram of the anchor ingot in the embodiment;

Fig. 7 is the construction schematic diagram of the counterweight in the embodiment;

Fig. 8 is the detailed construction schematic diagram of the counterweight in the embodiment;

Fig. 9 is the working principle schematic diagram of the hydraulic jack in the embodiment;

Fig. 10 is the construction schematic diagram of the main cable in the embodiment;

Fig. 11 is a schematic diagram of the reset of the weight body in the embodiment.

10- hinged support; 20- counterweight body; 30- main cable; 40- stabilization cable; 50- anchor spindle; 60- foundation; 70- jack.

Detailed ways

In order to make it easy to understand the technical means, creative features, goals and effects realized by the present invention, the super-span self-forming suspension cable structural unit of the present invention is described in detail below with reference to the accompanying drawings.

In the following embodiments, the "suspension cable structure" refers to a self-forming suspension cable structure with a large span. The foundation can meet the stress requirements required to support the suspension cable structure.

As shown in FIG. 1 to FIG. 11 , the suspension cable structure in this embodiment includes a twist support 10 , a counterweight body 20 , a main stay cable 30 , a stabilization cable 40 , and an anchor 50 .

The construction method of the suspension cable structure in this embodiment includes the following steps:

Step S1, install the foundation on the foundation;

Step S2, one end of the twisted support is installed on the foundation, and the twisted support includes 12 pairs of the first twisted support and the second twisted support installed in pairs;

Step S3, 24 anchor ingots are embedded on the foundation;

Step S4, the bottom of one end of the counterweight body is installed on the other end of the hinge support, so as to be connected with the foundation through the hinge support, so that the counterweight body can rotate around the hinge support, and the counterweight body includes 3 pairs of installed in pairs. a first counterweight and a second counterweight;

Step S5, installing a hydraulic jack on the bottom of the other end of the counterweight for temporarily supporting the counterweight during construction;

Step S6, carry out detailed construction on the counterweight;

Step S7, pressurizing the hydraulic jack, so that the counterweight body is jacked up and rotated around the hinge support;

Step S8, one end of the plurality of main cables is anchored to the upper part of one end of the first counterweight body through the anchoring device, and the other end is anchored to the upper part of one end of the second counterweight body through the anchoring device;

Step S9, one end of the 24 stabilizing cables is connected to the corresponding anchor, and the other end is connected to the bottom of the other end of the counterweight;

Step S10, the hydraulic jack is decompressed until the hydraulic jack is no longer under the pressure of the counterweight, and the hydraulic jack is removed, so that the counterweight is reset and the main cable is tightened.

Among them, the foundation is a pile foundation, and the pile foundation is formed and poured by concrete, and the bearing capacity can meet the gravity load required by the suspension cable structure and has a high safety factor.

The twist bearing is made of high-strength steel, which can meet the stress requirements required for the connection between the counterweight and the foundation.

The counterweight is made of reinforced concrete and the cross section is a triangular boss. The bottom of the opposite end of the first counterweight body and the second counterweight body is installed on the first hinge support, so that the first counterweight body can rotate around the first hinge support, under the action of the first counterweight body's own gravity , resulting in the first overturning moment. The bottom of the end of the second counterweight body facing the first counterweight body is mounted on the second hinge support, so that the second counterweight body can rotate around the second hinge support, under the action of the second counterweight body's own gravity , thereby generating a second overturning moment opposite to the direction of the first overturning moment.

The main stay cable is a steel cable, which is used to connect the first counterweight body and the second counterweight body and form a tensile force, so that the first overturning moment and the second overturning moment can be balanced. The tensile strength of the steel cable can satisfy the tensile force formed by connecting the first counterweight body and the second counterweight body.

The stabilizing cable is made of light-weight high-strength material, which can meet the tensile force required to stabilize the counterweight.

The anchor ingot is made of reinforced concrete. The anchor ingot and the stabilizing cable are correspondingly embedded on the foundation below the other end of the counterweight. The role of weight.

Example function and effect

According to the construction method based on the large-span self-forming suspension cable structure provided in this embodiment, the foundation is installed on the foundation, and one end of a plurality of hinge supports is installed on the foundation, and the hinge supports include a plurality of pairs of first A twisted support and a second twisted support are used to embed a plurality of anchors on the foundation. Since the bottom of one end of the counterweight is installed on the other end of the twisted support, it is connected to the foundation through the twisted support, so The counterweight body can rotate around the hinge support. The counterweight body includes a plurality of pairs of first counterweight bodies and second counterweight bodies installed in pairs. Since the bottom of the end of the first counterweight body facing the second counterweight body is installed on the first hinge support, the first counterweight body can be It rotates around the first hinge support and generates the first overturning moment. Since the bottom of the end of the second counterweight body facing the first counterweight body is installed on the second hinge support, the second counterweight body can rotate around the second counterweight body. The hinge support rotates and generates a second overturning moment opposite to the direction of the first overturning moment. Since the hydraulic jack is installed at the bottom of the other end of the counterweight body, the counterweight body can be supported during construction. Due to the detailed construction of the counterweight body, it is possible to increase the use function required for the building to the counterweight body. As the hydraulic jack is pressurized, the counterweight is lifted up and rotated around the hinge support. Since one end of the plurality of main cables is anchored on the upper part of one end of the first counterweight body, and the other end is anchored on the upper part of one end of the second counterweight body, it is used to connect the first counterweight body and the second counterweight body and form tension, so The first overturning moment and the second overturning moment can be balanced. Since one end of the plurality of stabilizing cables is connected to the corresponding anchor bolts, and the other ends are connected to the bottom of the other end of the counterweight body, the anchor bolts can cooperate with the stabilizing cables to stabilize the counterweight body. By decompressing the hydraulic jack until the hydraulic jack is no longer under pressure from the counterweight and removing the hydraulic jack, it is possible to reset the counterweight and tension the main cable.

Since the foundation adopts pile foundation and is poured by concrete at one time, the bearing capacity of the foundation can meet the gravity load required by the long-span self-forming suspension cable structure and has a high safety factor.

Since the counterweight is made of reinforced concrete, it can meet the stress requirements of the long-span self-forming suspension cable structure during use.

Since each of the main cables is parallel to each other and installed at even intervals along the vertical direction of the extension direction of the main cables, the main cables make the connection between the first counterweight body and the second counterweight body more stable.

The preferred embodiments of the present invention have been described in detail above. It should be understood that many modifications and changes can be made according to the concept of the present invention by those skilled in the art without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the present invention shall fall within the protection scope determined by the claims.

For example, the cross-section of the counterweight body in the above embodiment is a triangle, in the construction method based on the large-span self-forming suspension cable structure provided by the present invention, the cross-section of the counterweight body can also be a trapezoid, a semicircle, and a quarter. Circular, so as to meet the needs of various building shapes and internal structural spaces.

Claims (6)

1. A construction method based on a large-span self-molding suspension cable structure for installing the large-span self-molding suspension cable structure on a preset foundation to construct a building having a large-span structure, comprising the steps of:

step S1, installing a foundation on the foundation;

step S2, mounting one end of a plurality of twisted supports on the foundation, wherein the twisted supports comprise a plurality of pairs of first twisted supports and second twisted supports which are mounted in pairs;

step S3, burying a plurality of anchor ingots on the foundation;

step S4, mounting the bottom of one end of a counterweight body on the other end of the winch support so as to be connected with the foundation through the winch support, so that the counterweight body can rotate around the winch support, wherein the counterweight body comprises a plurality of pairs of first counterweight bodies and second counterweight bodies which are mounted in pairs;

step S5, installing a hydraulic jack at the bottom of the other end of the counterweight body for supporting the counterweight body;

step S6, performing detail construction on the counterweight body;

step S7, pressurizing the hydraulic jack, so that the counterweight body is jacked up and rotates around the winch support;

step S8, anchoring one ends of a plurality of main cables to an upper portion of one end of the first balance weight and anchoring the other ends of the main cables to an upper portion of one end of the second balance weight;

step S9, connecting one end of a plurality of stabilizing cables to the corresponding anchor ingot, and connecting the other end of each stabilizing cable to the bottom of the other end of the counterweight body;

step S10, decompressing the hydraulic jack until the hydraulic jack is not pressed by the counterweight body any more and removing the hydraulic jack, thereby resetting the counterweight body and tensioning the main cable,

wherein the bottom of one end of the first counterweight body, which is opposite to the second counterweight body, is arranged on the first twisting support, so that the first counterweight body can rotate around the first twisting support and generate a first overturning moment, the bottom of one end of the second counterweight body, which is opposite to the first counterweight body, is arranged on the second twisting support, so that the second counterweight body can rotate around the second twisting support and generate a second overturning moment, which is opposite to the first overturning moment,

the main cable is used for connecting the first counterweight body and the second counterweight body and forming a pulling force, so that the first overturning moment and the second overturning moment can be balanced,

the anchor ingots and the stabilizing cables are correspondingly embedded on the foundation below the other end of the counterweight body.

2. The construction method based on the large-span self-forming suspension cable structure of claim 1, characterized in that:

wherein the foundation is a pile foundation.

3. The construction method based on the large-span self-forming suspension cable structure of claim 1, characterized in that:

wherein, the foundation is formed and poured by concrete in one step.

4. The construction method based on the large-span self-forming suspension cable structure of claim 1, characterized in that:

wherein the counterweight body is made of reinforced concrete.

5. The construction method based on the large-span self-forming suspension cable structure of claim 1, characterized in that:

wherein, the counterweight body is a boss with a triangular section.

6. The construction method based on the large-span self-forming suspension cable structure of claim 1, characterized in that:

wherein each of the main cables is installed in parallel with each other and uniformly spaced in a vertical direction to an extending direction of the main cable.

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