Elevator substructure for seismic reinforcement of old building

Abstract

An elevator substructure for seismic reinforcement of an old building relates to the technical field of building seismic resistance and comprises an elevator substructure used for being built on one side of a building main structure as a substructure of the old building, and the elevator substructure is connected with the building main structure through a plurality of inerter devices. A shock insulation support used for amplifying shock deformation of the elevator substructure is arranged in a shaft structure column of the elevator substructure. According to the elevator substructure, the vertical traffic function can be normally achieved; during an earthquake, the elevator substructure can serve as an energy dissipation and shock absorption part, the earthquake deformation of the elevator substructure is amplified through the shock insulation support, the floor displacement difference between the building main structure and the elevator substructure is actively controlled and adjusted, and the deformation capacity of the elevator substructure in the earthquake is improved; the energy dissipation and shock absorption effects can be better achieved, even when a rare earthquake occurs, the elevator substructure is sacrificed for energy dissipation, so that the safety of the main structure of the building is ensured, and the dual-purpose function of earthquake and leveling is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of earthquake-resistant buildings, and in particular to an elevator substructure used for earthquake-resistant reinforcement of old buildings. Background Art

[0002] With the development of cities and people's pursuit of quality of life, a large number of old buildings are facing the need to install elevators. Due to the long service life of old buildings, the performance of structural materials may deteriorate to a certain extent, and the seismic resistance is insufficient compared with new buildings. At the same time, the increase in regional fortification intensity has also put forward higher requirements for the seismic performance of old buildings. In earthquake-prone areas or areas with high requirements for seismic performance, how to improve the overall seismic performance of old buildings while meeting the functional requirements of installing elevators has become an urgent problem to be solved in the construction field.

[0003] Most of the technical solutions for installing elevators in old buildings simply add elevator shafts outside or inside the building, attaching it to the main building as a relatively independent structure or treating it as a part of the main building. When designing, the impact of the elevator shaft on the seismic performance of the old building is minimized as much as possible. The main purpose is to realize the architectural function of the elevator. In fact, the elevator shaft can be used as an additional substructure with architectural functions, increasing the energy consumption capacity of the main structure of the building in earthquakes, improving the seismic performance of the main structure of the building, and realizing seismic reinforcement of old buildings while meeting the architectural functions.

[0004] Even if some structures have added energy-dissipating devices such as dampers in their designs, they only regard the elevator as part of the main structure of the building, and use the natural displacement difference between the elevator shaft and the main structure of the building to achieve shock absorption of the main structure of the building and the elevator through dampers. For example, Chinese patent CN 118327343 A discloses an elevator installed in old residential buildings, which is equipped with springs and gear rack inertial devices on the elevator structure, and dampers on the main structure of the building and the top of the elevator shaft. When an earthquake occurs, the natural relative deformation between the elevator shaft and the structure is used to increase the damper stroke and energy dissipation capacity, thereby achieving the purpose of energy dissipation and shock absorption. The invention can only set the damper at the top of the building, and cannot be set on other floors with relatively small deformation. The elevator shaft is not regarded as an energy-dissipating substructure of the main structure of the building, and the energy dissipation capacity of the elevator shaft is maximized, and the actual application has limitations. Summary of the invention

[0005] The purpose of the present invention is to provide an elevator substructure for seismic reinforcement of old buildings, which can effectively improve the overall seismic performance of the old buildings while meeting the functional requirements of installing elevators in the old buildings.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: an elevator substructure for seismic reinforcement of old buildings, comprising an elevator substructure for being built on one side of the main structure of the building, the elevator substructure being connected to the main structure of the building through a plurality of inertia devices, and a seismic isolation bearing for amplifying the seismic deformation of the elevator substructure being arranged in the shaft structure column of the elevator substructure.

[0007] Preferably, the shaft structure column is provided with a fault at a certain height position so as to separate the shaft structure column into an upper column and a lower column, and the seismic isolation bearing is installed in the fault and connects the upper column and the lower column.

[0008] More preferably, the seismic isolation bearing is a rubber seismic isolation bearing.

[0009] More preferably, each floor of the elevator substructure is correspondingly connected to each floor of the staircase structure of the main building structure through a corridor.

[0010] More preferably, one end of the corridor is fixedly connected to the elevator substructure, and the other end is placed on a stairwell rest platform at a corresponding height of the main structure of the building.

[0011] More preferably, a rubber pad is provided between the corridor and the staircase structure platform.

[0012] More preferably, the inertia container device is located under a corridor on one or more floors, and two ends of the inertia container device are respectively fixedly connected to the main structure of the building and the elevator substructure.

[0013] In addition, the present invention also provides an old building, which is equipped with the above-mentioned elevator substructure.

[0014] During normal use of the structure of the present invention, the elevator substructure can normally realize the vertical transportation function without affecting the normal use of the building; during an earthquake, the elevator substructure can serve as an important energy-absorbing and shock-absorbing component, and amplify the earthquake deformation of the elevator substructure through seismic isolation bearings, actively control and adjust the floor displacement difference between the main structure of the building and the elevator substructure, improve the deformation capacity of the elevator substructure during an earthquake, and through the inertia device between the main structure and the elevator substructure, enable it to better play the role of energy dissipation and shock absorption, and even sacrifice the elevator substructure for energy dissipation in rare earthquakes to ensure the safety of the main structure of the building, thereby realizing the "dual-purpose" function of earthquake compensation.

[0015] Compared with the existing solutions for protecting both old buildings and elevator substructures, the present invention focuses more on actively controlling the horizontal displacement of the elevator substructure to coordinate the energy consumption of the inertia device, thereby providing more effective seismic reinforcement measures for old buildings and meeting the functional requirements of installing elevators in old buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure in the embodiment; Figure 2 It is a schematic diagram of the position structure of the corridor and the inertia container device in the embodiment; Figure 3 Schematic diagram of the seismic isolation support structure in the shaft structure column in the embodiment.

[0017] In the figure: 1——Main building structure 2——Elevator substructure 3——Inertia device 4——Shaftway structural column 5——Seismic isolation bearing 6——Corridor 7——Rubber pad 4a——Upper column 4b——Lower column. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0019] It should be noted in advance that, in the present invention, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. 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 circumstances. In addition, in the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact through another feature between them.

[0020] like Figures 1 to 3 As shown, the elevator substructure used for seismic reinforcement of old buildings includes an elevator substructure 2 for being built on one side of the main building structure 1, the elevator substructure 2 is connected to the main building structure 1 through a plurality of inertia capacity devices 3, and a seismic isolation bearing 5 for amplifying the seismic deformation of the elevator substructure 2 is arranged in the shaft structure column 4 of the elevator substructure 2. The inertia capacity device 3 in this embodiment can adopt the inertia capacity damper commonly used in the prior art.

[0021] In the above structure, a fault is provided at a certain height position of the shaft structure column 4 so that the shaft structure column 4 is divided into an upper column 4a and a lower column 4b. The seismic isolation bearing 5 is installed in the fault and connects the upper column 4a and the lower column 4b. In this embodiment, the seismic isolation bearing 5 is arranged at the lower part of the shaft structure column 4. The seismic isolation bearing 5 can adopt a common seismic isolation bearing, and in this embodiment, a rubber seismic isolation bearing is selected. The seismic isolation bearing 5 has a certain deformation capacity and damping characteristics. When an earthquake occurs, the upper column and the lower column will move relative to each other. The seismic isolation bearing 5 will deform in this process and consume part of the seismic energy. At the same time, due to the deformation of the seismic isolation bearing 5, the horizontal displacement of the elevator substructure 2 will increase, thereby improving the energy consumption capacity of the elevator substructure 2. Those skilled in the art should know that under the action of an earthquake, the deformation of the elevator substructure 2 increases, which will cause the floor displacement difference between it and the main structure 1 of the building to change. Therefore, by setting the seismic isolation bearing 5 at the required height position in the shaft structure column 4, the change of the floor displacement difference can be actively controlled to keep it within a reasonable and required range, thereby strengthening the energy consumption capacity of the inertia volume device 3. At the same time, by adjusting the structural parameters of the seismic isolation bearing 5 itself, the control effect of the floor displacement difference can also be further optimized.

[0022] Each floor of the elevator substructure 2 in this embodiment is connected to each floor of the staircase structure of the main building structure 1 through a corridor 6. One end of the corridor 6 is fixedly connected to the elevator substructure 2, and the other end is placed on the stairwell rest platform at the corresponding height of the main building structure 1. The setting of the corridor 6 provides passengers with a direct and convenient passage, allowing passengers to quickly and safely enter each floor of the main building structure 1 from the elevator substructure 2 without having to transfer through other auxiliary facilities or paths, greatly improving the efficiency and convenience of vertical transportation. A rubber pad 7 is also provided between the corridor 6 and the staircase structure platform, which can effectively absorb and buffer the collision and vibration between the two, reduce the generation of noise, and provide passengers with a quieter and more comfortable travel environment.

[0023] In addition, the inertia storage device 3 is located under the corridor 6 of one or more floors, and the two ends of the inertia storage device 3 are fixedly connected to the main structure 1 of the building and the elevator substructure 2 respectively. In view of the seismic response characteristics of the main structure 1 of the building, the inertia storage device 3 can be set on any floor. In this embodiment, an old building with 5 floors is used as an example to install an elevator substructure, and each staircase from the 2nd to the 5th floor is connected to the inertia storage device 3, so as to improve the energy dissipation effect of the elevator substructure 2 in an earthquake to a greater extent. Those skilled in the art should know that since the elevator substructure 2 is only connected to the main structure 1 of the building through the inertia storage device 3, the corridor 6 is directly placed on the staircase structure platform of the main structure 1 of the building, which can avoid the stiffness interference caused by the rigid connection, so that the elevator substructure 2 and the main structure 1 of the building can vibrate relatively independently under the action of the earthquake, reduce the concentrated transfer of energy, and also help the elevator substructure 2 to better exert its energy dissipation capacity. In other words, only by using the inertia container device 3 as a connecting component, the deformation can be effectively transmitted and amplified, so that the overall deformation capacity of the elevator substructure 2 is improved, thereby providing more space for energy consumption and improving the seismic performance of the entire building main structure 1. In addition, when some inertia containers 3 are damaged due to conventional earthquakes, it is also very convenient to directly maintain or replace the inertia containers 3.

[0024] The elevator substructure for seismic reinforcement of old buildings provided in the above-mentioned embodiment, after being installed in the old building, during the earthquake, the seismic waves begin to act on the main structure 1 of the building and the elevator substructure 2 in the initial stage, and the two are connected by the inertia device 3, and the main structure 1 of the building can transfer part of the seismic energy to the elevator substructure 2. As the earthquake continues, the vibration of the main structure 1 of the building and the elevator substructure 2 intensifies, and the seismic isolation bearing 5 in the shaft structure column 4 of the elevator substructure 2 begins to play a role. Since the shaft structure column 4 is provided with a fault at a certain height position, it is divided into an upper column 4a and a lower column 4b, and the seismic isolation bearing 5 is installed in the fault and connects the upper column 4a and the lower column 4b. Under the action of the earthquake, the upper column 4a and the lower column 4b move relative to each other, and the seismic isolation bearing 5 is deformed, which amplifies the earthquake deformation of the elevator substructure 2. This amplification of deformation enables the elevator substructure 2 to absorb more seismic energy. In the energy dissipation stage, the deformation of the elevator substructure 2 in the earthquake causes internal stress and strain energy to be generated in its internal structural components and materials. These energies are dissipated through the inertia device 3 and the structural design of the elevator substructure 2. In the process of transmitting seismic energy, the inertia device 3 will also generate a certain damping force and consume part of the seismic energy. In addition, the material of the elevator substructure 2 will also convert seismic energy into other forms of energy such as heat energy and dissipate it due to mechanisms such as viscosity dissipation and friction dissipation during the deformation process. In the whole process, the elevator substructure 2, as an important energy dissipation and shock absorption component, plays a good role in energy dissipation and shock absorption. Even in rare earthquakes, the elevator substructure can be sacrificed for energy dissipation to ensure the safety of the main structure of the building.

[0025] The present invention connects the elevator substructure 2 and the main building structure 1 with an inertia device 3, and arranges seismic isolation bearings 5 ​​in the shaft structure columns of the elevator substructure to amplify its deformation due to seismic shock. When an earthquake occurs, the elevator substructure 2 and the main building structure 1 produce relative movement, the inertia device 3 transmits vibration, and the seismic isolation bearings 5 ​​amplify this movement, thereby increasing the deformation of the elevator substructure 2, thereby consuming more earthquake energy and effectively improving the seismic resistance of old buildings.

[0026] In order to make it easier for ordinary technicians in the field to understand the improvements of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified, and the above-mentioned embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. An elevator substructure for seismic reinforcement of old buildings, comprising an elevator substructure (2) for being built on one side of a main building structure (1), characterized in that: The elevator substructure (2) is connected to the main building structure (1) via a plurality of inertia devices (3), and a seismic isolation support (5) for amplifying the seismic deformation of the elevator substructure (2) is arranged in a shaft structure column (4) of the elevator substructure (2).

2. The elevator substructure for seismic reinforcement of old buildings according to claim 1, characterized in that: The shaft structure column (4) is provided with a fault at a certain height position so that the shaft structure column (4) is divided into an upper column and a lower column, and the seismic isolation support (5) is installed in the fault and connects the upper column and the lower column.

3. The elevator substructure for seismic reinforcement of old buildings according to claim 2 is characterized in that: The seismic isolation support (5) is a rubber seismic isolation support.

4. The elevator substructure for seismic reinforcement of old buildings according to claim 1, characterized in that: Each floor of the elevator substructure (2) is correspondingly connected to each floor of the staircase structure of the main building structure (1) via a corridor (6).

5. The elevator substructure for seismic reinforcement of old buildings according to claim 4 is characterized in that: One end of the corridor (6) is fixedly connected to the elevator substructure (2), and the other end is placed on a stairwell rest platform at a corresponding height of the building main structure (1).

6. The elevator substructure for seismic reinforcement of old buildings according to claim 5, characterized in that: A rubber pad (7) is also provided between the corridor (6) and the staircase structure platform.

7. The elevator substructure for seismic reinforcement of old buildings according to claim 6, characterized in that: The inertia container device (3) is located below a corridor (6) on one or more floors, and two ends of the inertia container device (3) are respectively fixedly connected to the main building structure (1) and the elevator substructure (2).

8. An old building, characterized in that: An elevator substructure according to any one of claims 1 to 7 is installed.

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