CN113076576A - Brick-concrete structure brick wall stress analysis method and system - Google Patents
Brick-concrete structure brick wall stress analysis method and system Download PDFInfo
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- CN113076576A CN113076576A CN202110290860.3A CN202110290860A CN113076576A CN 113076576 A CN113076576 A CN 113076576A CN 202110290860 A CN202110290860 A CN 202110290860A CN 113076576 A CN113076576 A CN 113076576A
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Abstract
The application relates to a brick-concrete structure brick wall stress analysis method and a system, which comprises the following steps: obtaining static load values of each floor according to the dead weight of the plate surface and the wall body of each floor; obtaining live load values of each floor according to the use purpose of each floor; and obtaining the load effect value required by each layer of brick wall according to the static load value and the live load value of each layer. This application can carry out the intensity standard setting of standard through the atress analysis to the house of different floors.
Description
Technical Field
The application relates to the field of building strength detection, in particular to a brick-concrete structure brick wall stress analysis method and system.
Background
At present, various old buildings mostly adopt brick-concrete structure brick walls for bearing, and potential safety hazards exist in some houses according to current investigation procedures and identification standards.
The current solution is to inspect every house and reinforce and relieve dangers when the house does not meet the strength standard. Therefore, it is very important to check the intensity of the house and accurately judge whether the house meets the intensity standard.
When intensity inspection is carried out on brick-concrete structure brick walls at present, the problem that the intensity standard of the brick-concrete structure brick walls is unreasonable in setting due to different load conditions of all layers of a house exists, so that the judgment on whether the house meets the intensity standard is inaccurate, and therefore the part to be improved exists.
Disclosure of Invention
In order to set the standard strength standard of houses with different floor heights, the application provides a brick-concrete structure brick wall stress analysis method and system.
In a first aspect, the application provides a brick-concrete structure brick wall stress analysis method:
a brick-concrete structure brick wall stress analysis method comprises the following steps:
obtaining static load values of each floor according to the dead weight of the plate surface and the wall body of each floor;
obtaining live load values of each floor according to the use purpose of each floor;
and obtaining the load effect value required by each layer of brick wall according to the static load value and the live load value of each layer.
By adopting the technical scheme, when detection is carried out, the dead weight of the plate surface and the wall body is firstly obtained, and a standard static load value to be borne is obtained in the building specification; then obtaining live load values of all floors in the building specification according to the use of all floors;
at the moment, the most accurate required load effect value of the corresponding floor can be obtained according to the actual conditions of different floors, the situation that the required load effect value is too large due to the fact that the unified static load value and live load value are used by each floor is avoided, and some houses which actually accord with the strength standard are wrongly judged as houses which do not accord with the strength standard is avoided.
Preferably, the obtaining of the static load value of each floor according to the dead weight of the floor and the dead weight of the wall includes: acquiring load arrangement of a plate surface and a wall body in each floor;
obtaining load distribution information of each floor according to the load arrangement of the plate surface and the wall body;
and calculating the static load value of each region in each floor according to the load distribution information.
By adopting the technical scheme, when the static load value is calculated, the dead weight of the plate and the wall of each floor is not directly taken, but the load distribution information of the floor is deduced according to the distribution of the plate and the wall, so that the support capacity of each region in each floor and the static load value can be correspondingly calculated when the load is calculated and compared, the strength requirement can be met or not accurately in each region in the floor, and the more accurate strength of the floor is judged.
Preferably, the obtaining of the live load value of each floor according to the usage purpose of each floor includes:
taking the live load value of the topmost floor as a standard live load value;
and each floor below the building obtains a progressively decreasing reduction coefficient, and the live load value of each floor is the standard live load value multiplied by the reduction coefficient.
By adopting the technical scheme, when only one floor is provided for the building, the required load effect value is calculated by directly adopting the standard live load value;
when the floor is two floors, the top floor, namely the two floors, still adopts the standard live load value to calculate the required load effect value, and the one floor is reduced to reduce the required standard live load value, thereby being closer to the most accurate strength standard;
the reduction coefficient of the floor positioned below is gradually reduced along with the higher floor, so that the strength calculation value of the whole building meets the most accurate strength standard.
Preferably, the obtaining the live load value of each floor according to the use purpose of each floor further comprises:
acquiring live load values of floors for various purposes in the specification;
the practical use of each floor is investigated, and the area ratio of all practical uses in each floor is obtained;
calculating the weight of each actual application according to the area ratio of each actual application;
and according to the weight of each actual application and the live load value of each application in the specification, comprehensively calculating the standard live load value required by the floor.
By adopting the technical scheme, when the live load value is set, firstly, the area of each floor needs to be classified and divided according to the actual use condition of the old house, and the weight of each actual use condition is calculated, and finally, the most accurate standard live load value is calculated.
Preferably, when the actual strength of the wall body of each floor is checked, a plurality of detection points are collected on each floor, the strength of each detection point is calculated, and the comprehensive value is taken as the actual strength of the wall body of the floor.
By adopting the technical scheme, when information is acquired, the bearing capacity is measured and calculated at a plurality of positions of each layer, so that the measured value caused by the old house is prevented from not corresponding to the actual value, and after a plurality of times of value measurement, the value is comprehensively taken, thereby ensuring the use safety of the house.
Preferably, the method further comprises the following steps:
according to the positions of the board surface, the wall body and the detection point positions, wall body strength distribution information of each floor is obtained;
and planning the use purposes of different positions in each floor according to the wall strength distribution information.
By adopting the technical scheme, the wall strength of different positions in the floors is calculated, so that more bearing configurations can be carried out at the positions with high wall strength, and during subsequent use, the floors can be more reasonably planned, so that the floors can be fully utilized by using reference for residents.
Preferably, the method further comprises the following steps: acquiring the actual strength of the wall;
calculating the size of the available live load value of each layer according to the static load value and the actual strength of the wall;
and optimizing the available use of each floor according to the size of the available live load value of each floor.
By adopting the technical scheme, after the actual wall strength is detected, the actual strength and the static load value are calculated, and the safe live load value which can be borne by each floor is judged, so that the use purpose of each subsequent floor is guided and warned.
In a second aspect, the application provides a brick-concrete structure brick wall atress analytic system:
a brick-concrete structure brick wall stress analysis system includes:
the acquisition module is used for interacting with workers and acquiring detection data input by the workers;
and the processing module is used for calculating and processing the detection data to obtain a numerical value required by a worker.
By adopting the technical scheme, when detection is carried out, the dead weight of the plate surface and the wall body is firstly obtained, and a standard static load value to be borne is obtained in the building specification; then obtaining live load values of all floors in the building specification according to the use of all floors;
at the moment, the most accurate required load effect value of the corresponding floor can be obtained according to the actual conditions of different floors, the situation that the required load effect value is too large due to the fact that the unified static load value and live load value are used by each floor is avoided, and some houses which actually accord with the strength standard are wrongly judged as houses which do not accord with the strength standard is avoided.
In summary, the present application includes at least one of the following beneficial technical effects:
1. respectively calculating live load values and static load values of all floors to obtain accurate required load effect values;
2. through dividing each use area in the floor, a more accurate live load value is obtained, and therefore a more accurate required load effect value is further obtained.
Drawings
FIG. 1 is a schematic flow chart of the method of the present application.
Fig. 2 is a schematic flow chart of embodiment 2 of the present application.
Fig. 3 is a schematic flow chart of embodiment 3 of the present application.
Detailed Description
The present application is described in further detail below.
Example 1
As shown in FIG. 1, a method for analyzing the stress of a brick wall of a brick-concrete structure. The method comprises the following steps:
100. and obtaining the static load value of each layer through load specification, plate dead weight and wall dead weight.
The static load value is the weight of the object to be borne, mainly the dead weight of the plate surface and the dead weight of the wall body.
200. And obtaining the live load value of each layer through the load specification and the use of the house.
The live load value is determined according to the use application, requirements for live load values for residence, daily work, processing work and the like can be distinguished, and the required specified live load value can be found from load specifications.
300. And calculating to obtain the load effect value required by each layer of brick wall according to the static load value and the live load value of each layer.
When the old house is designed to be reconstructed, the specifications of all ages need to be used, for example, the trial date is 1974, 12 months and 1 day, and the 'industrial and civil building structure load specification' is compiled by the national institute of architecture science; the implementation date is "building structure load standard" mainly compiled by Ministry of urban and rural construction environment protection of the people's republic of China at 7/1 of 1988; the implementation date is 2012, 10 months and 1 day, and the ' building structure load standard ' is mainly compiled by the housing of the people's republic of China and the Ministry of urban and rural construction. The required load effect values of each floor are calculated through the building specifications of the three ages, and the strength standard is considered not to be met as long as one of the requirements is not met.
The implementation principle of the embodiment 1 is as follows: the load effect value is calculated according to the static load value and the live load value of each layer, instead of measuring and calculating the load effect value by taking the whole house as a whole, so that the strength standard of the house can be more accurately obtained, and the situation that some houses which actually accord with the strength standard are wrongly judged as houses which do not accord with the strength standard due to overlarge required load effect value is prevented.
Example 2
As shown in fig. 2, the difference from the embodiment 1 is that the estimation of the wall and the panel surface includes:
101. dividing the total area of each floor to form a plurality of areas;
in the floor area division, the division may be performed on a per-housing basis, and on a per-room basis in each housing basis.
102. Calculating the static load value of each area according to the dead weight of the plate surface and the dead weight of the wall body;
when the static load of the wall body is calculated, the plate surfaces of the rooms are distributed on the wall in a trapezoid or triangle mode by taking the rooms as units, and the dead load value is calculated by adding the dead weight of the wall body. Therefore, on the basis of dividing the building into various floors, the floors are further divided into rooms, and the judgment of the load effect value can be more accurate by combining the use of each room.
103. And detecting the actual strength of the building.
When the actual strength of the building is detected, a plurality of detection point positions are selected at first, and each bearing wall, beam or bearing column is detected for many times, so that the accuracy of the strength detection is ensured.
For example, after a wall to be detected is selected, a plurality of detection points are arranged at the bottom, the middle end and the lower end of the wall, a plurality of detection results are obtained from the plurality of detection points, and then a value is selected from the detection results through reasonable analysis to serve as the actual strength of the wall, such as a median value, or an average value obtained by removing a maximum value and a minimum value, and the like.
104. And planning the available use of the building according to the actual strength.
When planning, according to the detected actual strength of the wall body and the static load value of each floor, the value range of the live load value of the floor can be calculated, so that the available use of the floor can be planned.
Meanwhile, each wall of each room is detected, so that the wall strength of which positions are better and the wall strength of which positions are poorer can be judged from the detection result, so that the wall strength distribution information is obtained, the rooms with stronger wall strength and general wall strength can be judged, and the purpose planning of the rooms is further realized on the basis of floor planning.
Example 3
As shown in fig. 3, the difference from example 1 is that obtaining live load values of the respective layers includes:
201. depending on the application, the desired live load value is obtained from the load specification.
202. And reducing the live load value required by each floor below the top floor, wherein the live load value of each floor is the standard live load value multiplied by a reduction coefficient.
For example, when only one floor of the building is available, the standard live load value is directly adopted to calculate the required load effect value;
when the floor is two floors, the top floor, namely the two floors, still adopts the standard live load value to calculate the required load effect value, and the one floor is reduced to reduce the required standard live load value, thereby being closer to the most accurate strength standard;
when the floor is three-storey, the three-storey still adopts the standard live load value to calculate the required load effect value, and the two-storey and the one-storey are respectively reduced;
and by analogy, for a brick wall building, about seven floors are generally adopted, the required load effect value is calculated by adopting a standard live load value on the seventh floor, and the lower 6 floors are reduced.
The reduced proportionality coefficient is inquired from the load specification and accords with the national requirement specification.
Example 4
The difference from example 3 is that obtaining the live load values for each layer further comprises:
203. obtaining the area ratio of each practical use in each floor;
for old houses, the actual application is generally fixed and is rarely changed, so that the actual application of each floor can be investigated, and stable and accurate investigation results can be obtained to obtain the number of rooms and the area ratio of various applications.
204. Calculating the weight of each actual application according to the area ratio of each actual application;
after the area ratio of each application is obtained, the weight of each application to the total floor can be obtained by the ratio of the area of each application to the total area of the floor.
205. And according to the weight of each actual application and the live load value of each application in the specification, comprehensively calculating the standard live load value required by the floor.
And multiplying the weight by the live load value corresponding to the application according to each weight, and finally adding the products to obtain the live load value required by the floor. After the required live load value is obtained, the most accurate live load value required by the floor can be obtained by reducing according to the floor number of the floor, so that the calculation of the strength standard is convenient.
Embodiment 5, a brick-concrete structure brick wall atress analytic system includes:
and the acquisition module is used for interacting with workers, acquiring detection data input by the workers and usually using a computer for information input.
And the processing module is used for calculating and processing the detection data to obtain a numerical value required by a worker. In the existing general mode, relatively mature calculation software such as PKPM series calculation software exists, and a worker can directly obtain the required house load effect value requirement through software calculation only by inputting relevant parameters such as a static load value and a live load value according to a calculation rule of a load specification. Software with similar functions is used, the load effect value of each room can be obtained only by inputting the static load value and the live load value of each room, and if the load effect value of each floor is needed, the static load value and the live load value of the floor to be calculated are input.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A brick-concrete structure brick wall stress analysis method is characterized by comprising the following steps:
obtaining static load values of each floor according to the dead weight of the plate surface and the wall body of each floor;
obtaining live load values of each floor according to the use purpose of each floor;
and obtaining the load effect value required by each layer of brick wall according to the static load value and the live load value of each layer.
2. The method for analyzing the stress on the brick-concrete structure brick wall according to claim 1, wherein the step of obtaining the static load value of each floor according to the plate dead weight and the wall dead weight of each floor comprises the following steps: acquiring load arrangement of a plate surface and a wall body in each floor;
obtaining load distribution information of each floor according to the load arrangement of the plate surface and the wall body;
and calculating the static load value of each region in each floor according to the load distribution information.
3. The method for analyzing the stress on the brick-concrete structure brick wall according to claim 1, wherein the step of obtaining the live load value of each floor according to the use purpose of each floor comprises the following steps:
taking the live load value of the topmost floor as a standard live load value;
and each floor below the building obtains a progressively decreasing reduction coefficient, and the live load value of each floor is the standard live load value multiplied by the reduction coefficient.
4. The method for analyzing the stress on the brick-concrete structure brick wall according to claim 3, wherein the step of obtaining the live load value of each floor according to the usage purpose of each floor further comprises the following steps:
acquiring live load values of floors for various purposes in the specification;
the practical use of each floor is investigated, and the area ratio of all practical uses in each floor is obtained;
calculating the weight of each actual application according to the area ratio of each actual application;
and according to the weight of each actual application and the live load value of each application in the specification, comprehensively calculating the standard live load value required by the floor.
5. The method for analyzing the stress of the brick-concrete structure brick wall according to claim 1, wherein: when the actual strength of each floor wall body is checked, a plurality of detection point positions are collected on each floor, the strength of each detection point position is calculated, and a comprehensive value is taken as the actual strength of the floor wall body.
6. The method for analyzing the stress on the brick-concrete structure brick wall according to claim 5, further comprising:
according to the positions of the board surface, the wall body and the detection point positions, wall body strength distribution information of each floor is obtained;
and planning the use purposes of different positions in each floor according to the wall strength distribution information.
7. The method for analyzing the stress on the brick-concrete structure brick wall according to claim 1, further comprising: acquiring the actual strength of the wall;
calculating the size of the available live load value of each layer according to the static load value and the actual strength of the wall;
and optimizing the available use of each floor according to the size of the available live load value of each floor.
8. The utility model provides a brick-concrete structure brick wall atress analytic system which characterized in that includes:
the acquisition module is used for interacting with workers and acquiring detection data input by the workers;
and the processing module is used for calculating and processing the detection data to obtain a numerical value required by a worker.
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