Building shock insulation support post-pressing construction method

Abstract

The invention relates to the technical field of building construction, and particularly discloses a building shock insulation support post-pressing construction method which comprises the steps that a shock insulation support is installed, and when a lower buttress is initially set, the shock insulation support and an upper embedded part which are installed together are installed on an embedded part of the lower buttress in an aligned mode; an upper buttress hanging formwork and a supporting system used for supporting an upper structure are erected; and an upper buttress and an upper structure are poured, a pressure sensor is arranged between the two ends of the shock insulation support, pouring is conducted when the detection numerical value of the pressure sensor is smaller than a safety value, and pouring is suspended and stress adjustment is conducted when the detection numerical value is larger than the safety value. The technical scheme has the beneficial effects that the installation is implemented after the concrete of the lower buttress is initially set, and meanwhile, the process of the upper structure of the shock insulation support is constructed. The supporting system supports the upper structure, so that the lower buttress does not bear the force of other components and accessories in the initial stage except bearing the self weight of the shock insulation support, the upper buttress hanging formwork and the pouring process. Construction can be carried out when the lower buttress is initially set, and the construction time is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly relates to a post-pressure construction method for building isolation bearings. Background Art

[0002] For buildings with seismic resistance functions, the structure below ±0.00 of each single building is a frame-shear wall structure, and the structure above ±0.00 is mainly a frame structure. Among them, the basement floor is the isolation layer, which consists of a lower pier, a lower embedded part, an isolation bearing, an upper embedded part, an upper pier and other main structures. Corresponding isolation bearings are provided under the frame columns of the main structure above ±0.00.

[0003] When constructing the isolation layer, since the isolation bearings used are heavy and bear the upper load in the later stage, the isolation bearings can bear the load only after the concrete of the lower pier reaches 28 days of age or 100% strength, that is, the concrete of the lower pier needs to reach sufficient strength to construct the upper structure above the isolation bearing. The waiting period is too long, seriously affecting the construction period. Summary of the Invention

[0004] Aiming at the defects in the prior art, the present invention provides a post-pressure construction method for building isolation bearings, which can start construction when the lower pier begins to set, shortening the construction period.

[0005] A technical solution provided by the present invention is: a post-pressure construction method for building isolation bearings, including:

[0006] Install the isolation bearing, and when the lower pier begins to set, align and install the isolation bearing and the upper embedded part installed together on the embedded part of the lower pier.

[0007] Erect the formwork for the upper pier and the support system for supporting the upper structure, and the support system is slightly higher than the design elevation.

[0008] Pouring, including pouring the upper pier and the upper structure. A pressure sensor is arranged between the two ends of the isolation bearing. Pouring is carried out when the detected value of the pressure sensor is less than the safety value, and pouring is suspended and force adjustment is carried out when the detected value is greater than the safety value.

[0009] The beneficial effects of the above technical solution are: The isolation bearing is installed after the concrete of the lower pier begins to set, and at the same time, the process of the upper structure of the isolation bearing is constructed. The support system is used to support the upper structure, so that before the concrete strength of the lower pier reaches 100%, in addition to bearing the self-weight during the installation of the isolation bearing, the upper pier formwork and the pouring process, it does not bear the force transmitted by the rest of the components to the isolation bearing. It enables construction to start when the lower pier begins to set, shortening the construction time.

[0010] Further, the force adjustment includes increasing the density of the support system near the isolation bearing.

[0011] Further, after the force adjustment, construction can continue only when the pressure gauge is stable or the compressive strength of the lower pier is greater than 1.3 times the sum of the readings of the pressure sensors and the self-weight of the seismic isolation bearing.

[0012] Further, the support system includes a number of disk buckle supports.

[0013] Further, the safety value is 1.3 times the self-weight of the upper pier.

[0014] Further, the safety value is the compressive strength of the lower pier minus the self-weight of the seismic isolation bearing.

[0015] Further, the disk buckle supports are distributed in a 600*600 matrix. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 Schematic diagram of the installation of the pressure sensor in the embodiment of the present invention;

[0018] Figure 2 Construction period of the traditional construction method;

[0019] Figure 3 Construction period of the construction method in the embodiment of the present invention;

[0020] Figure 4 Force condition of the seismic isolation bearing in the traditional construction method.

[0021] Reference numerals: lower pier 100, upper pier 200, seismic isolation bearing 300, lower connecting plate 301, upper connecting plate 302, pressure sensor 310, cross beam 400, floor slab 500, column 600. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will describe in detail the embodiments of the technical solutions of the present invention with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and therefore are only examples and cannot be used to limit the protection scope of the present invention.

[0023] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those skilled in the art to which the present invention belongs.

[0024] Such as Figures 1-3As shown in the figure, this embodiment provides a post-pressure construction method for building isolation bearings, enabling the upper pier 200 and the isolation bearing 300 to be constructed in advance without damaging the mechanical properties of the lower pier 100 and the isolation bearing 300. The post-pressure construction method for the isolation bearing 300 includes installing the isolation bearing 300, erecting the formwork for the upper pier and the support system for supporting the upper structure, and pouring. Installing the isolation bearing 300 includes aligning and installing the isolation bearing 300 and the upper embedded part, which are installed together, on the embedded part of the lower pier 100 when the lower pier 100 is in the initial setting stage; the support system is slightly higher than the design elevation and is mainly used to support the upper structure to be poured later, ensuring that the upper structure will not cause additional pressure on the isolation bearing 300 and the lower pier 100 before the isolation bearing 300 and the lower pier 100 reach full strength. After the construction is completed, when the isolation bearing 300 and the lower pier 100 reach full strength, the support system can be removed; pouring includes pouring the upper pier 200 and the upper structure, and the upper structure includes the cross beam 400, the floor slab 500, and the column 600. Pouring the upper pier 200 includes setting pressure sensors 310 between the two ends of the isolation bearing 300, pouring when the detected value of the pressure sensor 310 is less than the safety value, and pausing pouring and making force adjustment when the detected value is greater than the safety value.

[0025] Further, the lower end of the isolation bearing 300 is connected to the lower pier 100 through the embedded part of the lower pier 100, and the upper end of the isolation bearing 300 is connected to the upper pier 200 through the embedded part of the upper pier. During construction, the lower pier 100 is poured first, and the embedded part of the lower pier 100 is pre-buried and fixed when pouring the lower pier 100. After pouring is completed, the embedded part of the lower pier 100 is shaped, which can guide and determine the installation position of the isolation bearing 300.

[0026] Further, the isolation bearing 300 includes an upper connecting plate 302 and a lower connecting plate 301. Between the upper connecting plate 302 and the lower connecting plate 301 is an isolation body, which is formed by alternately stacking a number of rubber layers and steel plate layers. The isolation body is cylindrical, that is, both the alternately stacked rubber layers and steel plate layers are circular. When in use, the column for isolation and bearing force is the isolation body. When installing the pressure sensor 310, it is installed between the upper connecting plate 302 and the lower connecting plate 301, which can reflect the force condition of the isolation body, that is, the force condition of the entire isolation bearing 300. The first end of the pressure sensor 310 is in contact with the lower surface of the upper connecting plate 302, and the second end is in contact with the upper surface of the lower connecting plate 301. The pressure sensor 310 maintains a vertical state, that is, it is perpendicular to both the upper and lower connecting plates 301.

[0027] The isolation bearing 300 is installed after the concrete of the lower pier 100 begins to set, and at the same time, the process of the superstructure of the isolation bearing 300 is constructed. A support system is used to support the superstructure, so that before the concrete strength of the lower pier 100 reaches 100%, except for bearing the self-weight of the isolation bearing 300, the formwork suspension of the upper pier, and the self-weight during the pouring process, it does not bear the force transmitted from other components to the isolation bearing 300. This enables the construction to start when the lower pier 100 begins to set, shortening the construction time. Specifically, refer to Figure 2 , 4 , in the traditional construction process, since the isolation bearing needs to bear the pressure of the cross beam 400, the floor slab 500, the column 600, and the upper pier, these distributed loads and the concentrated load of the main structure are finally aggregated into a concentrated load at the isolation bearing. In order to protect the isolation bearing, it is necessary to wait until the lower pier 100 reaches its full strength before proceeding with the subsequent construction of the upper pier 200, the isolation bearing 300, and the superstructure. That is, the installation of the bearing can only be carried out on the 13th day. At this time, the curing of the lower pier 100 is almost complete. Refer to Figure 3 , after adopting the construction method of this embodiment, the construction of the isolation bearing 300 can start when the lower pier 100 begins to set, that is, the isolation bearing 300 can be installed on the 8th day. Compared with the traditional construction method, the construction method of this embodiment is 5 days ahead. With the same subsequent processes, it can shorten the construction period by 5 days and increase the construction speed.

[0028] In some embodiments, the force adjustment includes increasing the support system near the isolation bearing 300. Increasing the support system can share more pressure, thereby making the force at the isolation bearing 300 return to a reasonable range and preventing the position of the isolation bearing 300 from moving.

[0029] In some embodiments, after the force adjustment, construction can continue, that is, continue pouring, only when the pressure gauge is stable or the compressive strength of the lower pier 100 is greater than 1.3 times the sum of the reading of the pressure sensor 310 and the self-weight of the isolation bearing 300. After the force adjustment is completed, the stability of the pressure gauge indicates that a new balance has been achieved between the support system and the superstructure, that is, the increased support system shares the pressure increased on the isolation bearing 300.

[0030] In some embodiments, the support system includes a number of disk buckle type support frames. The disk buckle type support frames are convenient to lap and can be dynamically adjusted. Before construction, the load of the superstructure needs to be calculated to determine the number of disk buckle type support frames used and their distribution. In this embodiment, the 48-type disk buckle type support frame is preferably used, and its axial compressive capacity is 300N / mm 2The socket - and - button - type support frame is mainly used to support the beam, slab and column on one floor, that is, the structure connected to the top of the upper pier 200. Among them, taking the cross - sectional dimension of the cross - beam 400 as 300*700mm, the thickness of the floor slab 500 as 150mm, and the cross - sectional dimension of the column 600 as 800*800mm as an example for calculation, the socket - and - button - type support frame should be distributed in a 600*600mm matrix to ensure effective support for the upper structure. According to the requirements of JGJ / T231 - 2021 and in combination with the design drawings, the socket - and - button - type support frame is arranged.

[0031] In some embodiments, the safety value is 1.3 times the self - weight of the upper pier 200. Since the isolation bearing 300 cannot bear too much weight before reaching full strength, there is a risk of displacement of the isolation bearing 300 when the weight exceeds 1.3 times the self - weight of the upper pier 200.

[0032] In some embodiments, the safety value is the compressive strength of the lower pier 100 minus the self - weight of the isolation bearing 300. That is to say, when the reading of the pressure sensor 310 plus the self - weight of the isolation bearing 300 is close to the measured concrete compressive strength of the lower pier 100, the pouring of concrete should be stopped in time.

[0033] In the description of the present application, it should be understood that the terms in the present application are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present invention, the meaning of "a plurality" is more than two, unless otherwise specifically and clearly defined.

[0034] In the present application, unless otherwise clearly specified and limited, terms such as "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between 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.

[0035] In the specification of the present invention, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well - known methods, systems and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.

Claims

1. A post-compression construction method for building seismic isolation bearings, characterized in that Including: Installing the isolation bearing, and aligning and installing the isolation bearing and the upper embedded part installed together on the embedded part of the lower pier when the lower pier begins to set. Erecting the formwork for the upper pier and the support system for supporting the upper structure, and the support system is slightly higher than the design elevation. Pouring, including pouring the upper pier and the upper structure, setting pressure sensors between the two ends of the isolation bearing, pouring when the detected value of the pressure sensor is less than the safety value, and suspending pouring and making force adjustment when the detected value is greater than the safety value.

2. The post-compression construction method of a building seismic isolation bearing according to claim 1, wherein, The force adjustment includes increasing the density of the support system near the isolation bearing.

3. The construction method of post-compression of a building isolation bearing according to claim 2, characterized in that After the force adjustment, continue the construction when the pressure gauge is stable or the compressive strength of the lower pier is greater than 1.3 times the sum of the reading of the pressure sensor and the self-weight of the isolation bearing.

4. The post-compression construction method of a building seismic isolation bearing according to claim 1, characterized in that, The support system includes a number of disk buckle type support frames.

5. The post-compression construction method of a building isolation bearing according to claim 1, characterized in that The safety value is 1.3 times the self-weight of the upper pier.

6. The post-pressure construction method of a building isolation bearing according to claim 1, characterized in that, The safety value is the compressive strength of the lower pier minus the self-weight of the isolation bearing.

7. The post-pressure construction method of a building isolation bearing according to claim 4, characterized in that The disk buckle type support frames are distributed in a 600*600 matrix.

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