CN112100729A - Vertical deformation and differential deformation control method for super high-rise structure - Google Patents
Vertical deformation and differential deformation control method for super high-rise structure Download PDFInfo
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Abstract
The invention provides a vertical deformation and differential deformation control method for a super high-rise structure, aiming at solving the problem that vertical deformation and differential deformation simulation of a super high-rise are inconvenient. According to the control method for vertical deformation and differential deformation of the super high-rise structure, the height of the structure model is adjusted in a mode of simulating and adjusting the temperature, so that the purpose of simulating vertical deformation and differential deformation can be achieved under the condition that a compensation structure is not generated. Thereby solving the problem of inconvenient vertical deformation and differential deformation simulation of the super high-rise.
Description
Technical Field
The invention belongs to the field of vertical deformation control of super high-rise building engineering construction structures, and particularly relates to a vertical deformation and differential deformation control method for a super high-rise structure.
Background
Because the number of layers of the super high-rise structure is large and the height of the super high-rise structure is high, along with the progress of construction, the vertical load is gradually increased, and the vertical elastic compression deformation of the structure is increased. Meanwhile, the vertical deformation increases with time due to the shrinkage creep characteristic of concrete. The super high-rise core tube is mainly of a reinforced concrete structure, and the peripheral frame column is mainly of a section steel concrete structure. The core cylinder and the frame column have different integral elastic moduli, and the core cylinder and the frame column have different digital display deformations to form deformation differences under the actions of load, concrete shrinkage and creep and the like. The deformation of the core barrel and the differential deformation of the barrel columns affect the safety and quality of structural elevation, curtain walls, electromechanical pipelines, floor levelness, structural members and the like. In order to eliminate various influences caused by deformation, pre-deformation control is required in the super high-rise construction process.
The current general idea of pre-deformation control is to simulate a structural model by a computer, calculate to obtain a deformation value, and then generate a compensation structure according to a certain rule. However, when the computer simulates the deformation of the structural model, the compensation structure often needs to be modeled again, and when the compensation structure is complex, the simulation of the structural model is inconvenient.
In addition, the methods adopted by the current pre-deformation control measures mainly comprise a regulation and control method of each layer, a compensation method in a construction section, a one-time compensation method at the top of the construction section and the like. The method does not well consider the influence on the internal force of the structure after elevation compensation.
Disclosure of Invention
The invention provides a vertical deformation and differential deformation control method for a super high-rise structure, aiming at solving the problem that vertical deformation and differential deformation simulation of a super high-rise are inconvenient.
The technical scheme of the control method for vertical deformation and differential deformation of the super high-rise structure comprises the following steps:
s1, determining a structural model according to a drawing, wherein the structural model comprises a core barrel model and a frame column model;
s2, determining the position of each leveling floor in the structural model according to the actual working conditions;
s3, establishing a structural model from bottom to top by taking the leveling floor as a boundary;
s4, when the structural model is built to the nth leveling floor position, calculating to obtain the height L of the deformed structural modelnCore barrel model deformation valueXnAnd a frame column model deformation value Yn；
S5, adjusting the height of the current structure model to the height of a design layer in a mode of simulating and adjusting temperature;
s6, continuing to establish the structural model to the (n + 1) th leveling floor position;
and S7, repeating S4 to S6 until the building of the structure model is completed.
According to the control method for vertical deformation and differential deformation of the super high-rise structure, the height of the structure model is adjusted in a mode of simulating and adjusting the temperature, so that the purpose of simulating vertical deformation and differential deformation can be achieved under the condition that a compensation structure is not generated. Thereby solving the problem of inconvenient vertical deformation and differential deformation simulation of the super high-rise.
Further, in the method for controlling vertical deformation and differential deformation of a super high-rise structure, S5 includes:
setting the temperature expansion coefficient of the core tube line as S1 and the temperature expansion coefficient of the frame column as S2;
core barrel model temperature difference TXn=(Xn-Xn-1)/（S1*Ln）；
Temperature difference TY of frame column modeln=(Yn-Yn-1)/（S2*Ln）；
Imposing TX on a current core barrel modelnThe back height reaches the design layer height;
applying TY on current framework column modelnThe back height is up to the design level height.
The calculation method can accurately calculate the temperature difference value required by the core barrel model and the frame column model to reach the designed layer height, thereby providing data basis for simulating and adjusting the temperature.
Further, in the method for controlling vertical deformation and differential deformation of a super high-rise structure, in order to more accurately simulate a building structure, in S5, in the structural model, the expansion direction of the plate unit members is the vertical direction of the structural model, and the expansion direction of the beam unit members is the length direction of the beam units.
Further, in the method for controlling vertical deformation and differential deformation of a super high-rise structure, the method further includes:
s8, calculating the structure model to obtain the accumulated deformation value A of the core barrel when the structure model is built to each floormAnd frame column accumulated deformation value Bm；
S9, determining the position of each leveling position layer and the core barrel compensation value HX of the leveling position layerjAnd frame column compensation value HYj。
Cumulative deformation value A of core barrelmAnd frame column accumulated deformation value BmAnd can provide basis for determining each leveling position layer.
Further, in the method for controlling vertical deformation and differential deformation of a super high-rise structure, S9 includes:
s9-1, starting calculation from the 1 st floor of the structural model, and setting the total compensation value of the core cylinder as HXtotalThe total compensation value of the frame column is HYtotal；
S9-2, calculating the mth floor of the structural model, and if A is satisfiedm-HXtotalNot less than 7mm or (A)m-HXtotal）-（Bm-HYtotal) And if the floor is more than or equal to 3mm, determining the floor as the jth leveling position layer, and setting a corresponding core barrel compensation value HXjAnd frame column compensation value HYj；
S9-3, core tube compensation value HXjAdding to the total compensation value HX of the core barreltotal(ii) a Compensation value HY of frame columnjTotal compensation value HY accumulated to frame columntotal；
S9-4, continuously calculating the (m + 1) th floor of the structural model;
and S9-5, repeating S9-2 to S9-4 until the whole structure model is calculated, and determining the leveling position layer.
Accumulating the deformation value A by the core barrelmAnd frame column accumulated deformation value BmDetermining the position of each leveling position layer and determining the core barrel compensation value HX of the leveling position layerjAnd frame column compensation value HYjThe influence of elevation compensation on the internal force of the structure can be taken into consideration, so that the vertical direction can be determined more accurately and reasonablyDeformation and differential deformation compensation.
Further, in the method for controlling vertical deformation and differential deformation of a super high-rise structure, specifically, S8 further includes calculating the structural model to obtain a structural internal force variation value C caused by differential deformation when the structural model is built to each floorm；
S9-2 further includes calculating the mth layer of the structure model, if A is satisfiedm-HXtotalNot less than 7mm or (A)m-HXtotal）-（Bm-HYtotal) Not less than 3mm or CmMore than or equal to 10 percent, determining the floor as the jth leveling position layer, and setting a corresponding core barrel compensation value HXjFrame column compensation value HYj。
Further, in the control method for vertical deformation and differential deformation of the super high-rise structure, specifically, the method further includes S10, and the compensation value HX of the core barrel of each leveling position layer is compensated in a mode of simulating and adjusting temperaturejAnd frame column compensation value HYjAnd (6) carrying out verification.
Drawings
Fig. 1 is a schematic diagram of a structural model of the control method for vertical deformation and differential deformation of a super high-rise structure.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Example 1:
referring to fig. 1, the present embodiment provides a method for controlling vertical deformation and differential deformation of a super high-rise structure, and the technical scheme includes the following steps:
s1, determining a structural model according to a drawing, wherein the structural model comprises a core barrel model and a frame column model;
s2, determining the position of each leveling floor in the structural model according to the actual working conditions;
s3, establishing a structural model from bottom to top by taking the leveling floor as a boundary;
s4, when the structural model is built to the nth leveling floor position, calculating to obtain the height L of the deformed structural modelnCore barrel model deformation value XnAnd a frame column model deformation value Yn；XnEstablishing an overall deformation value, Y, of the core barrel model for the structural model up to the nth leveling floor positionnEstablishing an integral deformation value of the frame column model from the nth leveling floor position for the structural model;
s5, adjusting the height of the current structure model to the height of a design layer in a mode of simulating and adjusting temperature;
s6, continuing to establish the structural model to the (n + 1) th leveling floor position;
and S7, repeating S4 to S6 until the building of the structure model is completed.
According to the control method for vertical deformation and differential deformation of the super high-rise structure, the height of the structure model is adjusted in a mode of simulating and adjusting the temperature, so that the purpose of simulating vertical deformation and differential deformation can be achieved under the condition that a compensation structure is not generated. Thereby solving the problem of inconvenient vertical deformation and differential deformation simulation of the super high-rise.
In a preferred embodiment, in the method for controlling vertical deformation and differential deformation of a super high-rise structure, S5 includes:
setting the temperature expansion coefficient of the core tube line as S1 and the temperature expansion coefficient of the frame column as S2;
due to the temperature expansion coefficient S, the temperature difference T, the model expansion degree X and the model height LtotalPresence, X = S LtotalT, so:
core barrel model temperature difference TXn=(Xn-Xn-1)/（S1*Ln）；
Temperature difference TY of frame column modeln=(Yn-Yn-1)/（S2*Ln）；
Imposing TX on a current core barrel modelnThe back height reaches the design layer height;
applying TY on current framework column modelnThe back height is up to the design level height.
Finally, when the building of the structural model is completed:
the core barrel model applied temperature in the leveling floor range of the 1 st is TX1+TX2+…+TXn；
The core barrel model applied temperature in the 2 nd leveling floor range is TX2+TX3+…+TXn；
……；
The core barrel model in the nth leveling floor range applies the temperature of TXn；
Also:
1 st leveling of the temperature TY applied to the framework column model in the floor area1+TY2+…+TYn；
2 nd leveling the applied temperature of the frame column model in the floor range is TY2+TY3+…+TYn；
……；
The temperature applied by the frame column model in the nth leveling floor range is TYn；
The calculation method can accurately calculate the temperature difference value required by the core tube model and the frame column model to reach the designed layer height, thereby providing data basis for simulating and adjusting the temperature.
In a preferred embodiment, in the method for controlling vertical deformation and differential deformation of a super high-rise structure, in order to more accurately simulate a building structure, in S5, in the structural model, the expansion direction of the plate unit members is the vertical direction of the structural model, and the expansion direction of the beam unit members is the longitudinal direction of the beam units.
As a preferred embodiment, the method for controlling vertical deformation and differential deformation of a super high-rise structure further includes:
s8, calculating the structure model to obtain the accumulated deformation value A of the core barrel when the structure model is built to each floormAnd frame column accumulated deformation value Bm；
S9, determining the position of each leveling position layerCore barrel compensation value HX of leveling position layerjAnd frame column compensation value HYj。
Cumulative deformation value A of core barrelmAnd frame column accumulated deformation value BmAnd can provide basis for determining each leveling position layer.
In a preferred embodiment, the method for controlling vertical deformation and differential deformation of a super high-rise structure, in S9, includes:
s9-1, starting calculation from the 1 st floor of the structural model, and setting the total compensation value of the core cylinder as HXtotalThe total compensation value of the frame column is HYtotal；
S9-2, calculating the mth floor of the structural model, and if A is satisfiedm-HXtotalNot less than 7mm or (A)m-HXtotal）-（Bm-HYtotal) And if the floor is more than or equal to 3mm, determining the floor as the jth leveling position layer, and setting a corresponding core barrel compensation value HXjAnd frame column compensation value HYj；
S9-3, core tube compensation value HXjAdding to the total compensation value HX of the core barreltotal(ii) a Compensation value HY of frame columnjTotal compensation value HY accumulated to frame columntotal；
S9-4, continuously calculating the (m + 1) th floor of the structural model;
and S9-5, repeating S9-2 to S9-4 until the whole structure model is calculated, and determining the leveling position layer.
Accumulating the deformation value A by the core barrelmAnd frame column accumulated deformation value BmDetermining the position of each leveling position layer and determining the core barrel compensation value HX of the leveling position layerjAnd frame column compensation value HYjThe method can give consideration to the influence of elevation compensation on the internal force of the structure, thereby more accurately and reasonably determining the compensation mode of vertical deformation and differential deformation.
As a preferred embodiment, in the method for controlling vertical deformation and differential deformation of a super high-rise structure, S8 further includes calculating the structural model, and when the structural model is built to each floor, the method for controlling vertical deformation and differential deformation of a super high-rise structure further includes calculating the structural model to obtain the structural model due to differential deformationResulting in a value of change of internal force Cm；
S9-2 further includes calculating the mth layer of the structure model, if A is satisfiedm-HXtotalNot less than 7mm or (A)m-HXtotal）-（Bm-HYtotal) Not less than 3mm or CmMore than or equal to 10 percent, determining the floor as the jth leveling position layer, and setting a corresponding core barrel compensation value HXjFrame column compensation value HYj。
As a preferred embodiment, in the method for controlling vertical deformation and differential deformation of a super high-rise structure, specifically, the method further includes S10, where the method includes adjusting the temperature in a simulated manner to compensate the core tube compensation value HX for each leveling position layerjAnd frame column compensation value HYjAnd (6) carrying out verification.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (7)
1. A vertical deformation and differential deformation control method for a super high-rise structure is characterized by comprising the following steps:
s1, determining a structural model according to a drawing, wherein the structural model comprises a core barrel model and a frame column model;
s2, determining the position of each leveling floor in the structural model according to the actual working conditions;
s3, establishing a structural model from bottom to top by taking the leveling floor as a boundary;
s4, when the structural model is built to the nth leveling floor position, calculating to obtain the height L of the deformed structural modelnCore barrel model deformation value XnAnd a frame column model deformation value Yn；
S5, adjusting the height of the current structure model to the height of a design layer in a mode of simulating and adjusting temperature;
s6, continuing to establish the structural model to the (n + 1) th leveling floor position;
and S7, repeating S4 to S6 until the building of the structure model is completed.
2. The method for controlling vertical deformation and differential deformation of a super high-rise structure according to claim 1, wherein S5 includes:
setting the temperature expansion coefficient of the core tube line as S1 and the temperature expansion coefficient of the frame column as S2;
core barrel model temperature difference TXn=(Xn-Xn-1)/（S1*Ln）；
Temperature difference TY of frame column modeln=(Yn-Yn-1)/（S2*Ln）；
Imposing TX on a current core barrel modelnThe back height reaches the design layer height;
applying TY on current framework column modelnThe back height is up to the design level height.
3. The vertical deformation and differential deformation control method for a super high-rise structure according to claim 2, wherein in S5, the expansion direction of the plate unit members in the structural model is the vertical direction of the structural model, and the expansion direction of the beam unit members is the length direction of the beam units.
4. The method for controlling vertical deformation and differential deformation of a super high-rise structure according to claim 1, further comprising:
s8, calculating the structure model to obtain the accumulated deformation value A of the core barrel when the structure model is built to each floormAnd frame column accumulated deformation value Bm；
S9, determining the position of each leveling position layer and the core barrel compensation value HX of the leveling position layerjAnd frame column compensation value HYj。
5. The method for controlling vertical deformation and differential deformation of a super high-rise structure according to claim 4, wherein the step S9 comprises:
s9-1, starting calculation from the 1 st floor of the structural model, and setting the total compensation value of the core barrel asHXtotalThe total compensation value of the frame column is HYtotal；
S9-2, calculating the mth floor of the structural model, and if A is satisfiedm-HXtotalNot less than 7mm or (A)m-HXtotal）-（Bm-HYtotal) And if the floor is more than or equal to 3mm, determining the floor as the jth leveling position layer, and setting a corresponding core barrel compensation value HXjAnd frame column compensation value HYj；
S9-3, core tube compensation value HXjAdding to the total compensation value HX of the core barreltotal(ii) a Compensation value HY of frame columnjTotal compensation value HY accumulated to frame columntotal；
S9-4, continuously calculating the (m + 1) th floor of the structural model;
and S9-5, repeating S9-2 to S9-4 until the whole structure model is calculated, and determining the leveling position layer.
6. The method for controlling vertical deformation and differential deformation of a super high-rise structure according to claim 5, wherein S8 further comprises calculating the structural model to obtain the structural internal force variation value C caused by differential deformation when the structural model is built to each floorm；
S9-2 further includes calculating the mth layer of the structure model, if A is satisfiedm-HXtotalNot less than 7mm or (A)m-HXtotal）-（Bm-HYtotal) Not less than 3mm or CmMore than or equal to 10 percent, determining the floor as the jth leveling position layer, and setting a corresponding core barrel compensation value HXjFrame column compensation value HYj。
7. The method for controlling vertical deformation and differential deformation of a super high-rise structure according to claim 4, further comprising S10, wherein the compensation value HX of the core barrel of each leveling position layer is compensated by simulating temperature adjustmentjAnd frame column compensation value HYjAnd (6) carrying out verification.
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