What does the angle between the horizontal force and the overall coordinate in satwe mean?

When changing the parameter "Angle between horizontal force and global coordinates", the direction of ** action and wind load change at the same time, and it is recommended to use this parameter only when the direction of wind load needs to be changed. At this time, if the direction of the main axis of the structure is inconsistent with the direction of the new coordinate system, it is advisable to fill in the direction angle of the main axis of the structure as the "additional direction of oblique lateral force" to consider the action along the direction of the main axis of the structure.

If you do not change the direction of the wind load, you only need to consider the action of other angles, then you do not need to change the "angle between the horizontal force and the overall coordinates", and only add the additional direction of action.

The anti-regulation stipulates that when the intersection angle is greater than 15 degrees, the horizontal action of each anti-lateral force member direction should be calculated separately.

Therefore, to sum up, when the calculated **force and the angle of the orthogonal direction are greater than 15 degrees, the value should be filled in to the "oblique lateral force additional" direction on the parameter page, and the additional number in front of it should be filled in 1The angle of the horizontal force in the total information affects ** and the wind load.

It refers to the angle between the direction of force or wind load and the overall coordinates of the structure, which is positive counterclockwise.

You look at structural mechanics and see how the direction of force is defined above, and it is also a reference on the Internet, saying that I forgot!

Hello Answer! 1. Fill in 1 in the "additional ** number of oblique lateral force members", and fill in the corresponding angle. Because the angle of difference with 90 ° has exceeded 15 degrees, it is to look at the absolute value, rather than simply looking at the difference is exactly negative, so it is necessary to add additional ** number;

2. Fill in 1 for "additional ** number of oblique anti-lateral force members", and fill in -18 (degrees) for the corresponding angle. Because the difference between the angle and the coordinate axis is already more than 15 degrees;

3. Fill in 1 for the additional ** number of oblique anti-lateral force members, and fill in 18 (degrees) for the corresponding angle;

4. "Diagonal lateral force resistance member" refers to beams, walls and other components at a certain angle to the coordinate axis. For irregular structures, there are often oblique lateral force members.

It must be considered, but it can not be backfilled in the angle between the horizontal force and the overall coordinates in the total information In the **information: the additional **number of oblique anti-lateral force members is filled in 1 The corresponding angle backfill, the maximum **force action direction can be calculated.

Hello! 1. Fill in 1 in the "additional ** number of oblique lateral force members", and fill in the corresponding angle. Because the angle of difference with 90 ° has exceeded 15 degrees, it is to look at the absolute value, rather than simply looking at the difference is exactly negative, so it is necessary to add additional ** number; 2. Fill in 1 for "additional ** number of oblique anti-lateral force members", and fill in -18 (degrees) for the corresponding angle.

Because the difference between the angle and the coordinate axis is already more than 15 degrees; 3. Fill in 1 for the additional ** number of oblique anti-lateral force members, and fill in 18 (degrees) for the corresponding angle; 4. "Diagonal lateral force resistance member" refers to beams, walls and other components at a certain angle to the coordinate axis. For irregular structures, there are often oblique lateral force members. I don't know if you can understand that.

In the SATWE module of PKPM software, there are two parameters: "angle between horizontal force and global coordinates" and "corresponding angle of additional ** number in the direction of oblique lateral force".

1. "Angle between horizontal force and overall coordinates" parameter.

Resistance stipulates that for irregular building structures, it is required to carry out horizontal action calculations and internal force adjustments. This parameter is the angle between the direction of force and wind and the overall coordinates of the structure, the counterclockwise direction is positive, and the unit is degrees. The force and wind always act along the direction of the coordinate axis, so when the designer thinks that the force and wind under the set coordinates can not control the maximum force state of the structure, the coordinate system can be changed, so that the force and wind act along the new coordinate system.

Acting in different directions, the size of the reaction of the structure is generally different, and the reaction of the structure is a function of the angle of the direction of action, so there must be an angle that makes the maximum reaction value of the structure, and this direction is called the most unfavorable direction of action. When the maximum direction of ** in the output structure is greater than 15 degrees, this direction should be input and recalculated.

It should be noted that the program cannot automatically take an unfavorable case for the results obtained from two different angles of the input. The designer needs to calculate the calculations separately in two different working directories, and then compare the calculation results.

2. The parameter of "the corresponding angle of the additional number of ** in the direction of the oblique anti-lateral force member".

Anti" stipulates that when the intersection angle is greater than 15 degrees, the horizontal action of each lateral force resistance member direction should be calculated separately. Up to 5 additional sets are allowed**. The additional ** number can be taken between 0 and 5.

Fill in the "Corresponding Angle" input box with the value of each angle. This angle is the angle to the positive direction of the x-axis, which is positive counterclockwise, and is separated by a comma or space.

It should be noted that the reinforcement increases due to the multi-directional action, but when the multi-directional input is considered for the regular structure, the member reinforcement does not increase or does not increase much.

The multi-directional** input angle is selected along the main axis of the local column grid in the plan as much as possible. It is recommended that the angles of multi-directional** action be entered symmetrically.

3. Differences. The "angle between the horizontal force and the overall coordinates" not only changes the ** force but also changes the direction of the wind load, while the "additional ** angle of the diagonal lateral force member" only changes the ** force direction.

For the calculation results, the "horizontal force and the overall coordinate angle" requires the designer to divide two calculation engineering catalogs according to the different angles entered, artificially compare the two different results, and take unfavorable conditions for reinforcement design, etc., while the "oblique lateral force member additional angle" program can automatically consider the combination of the internal force of the member under the action of each direction, which can be directly used for reinforcement calculation, without human judgment.

When the calculation angle is greater than 15 degrees, the calculation angle should be backfilled to the "angle between the horizontal force and the overall coordinate system" and the force should be recalculated. See description of the new anti-regulation and its stripes.

According to the results of SATWE, in the file of the calculation period of the structure, if the maximum direction angle of the force is greater than 15 degrees, this angle should be backfilled into the angle between the horizontal force and the overall coordinates in the SATWE preprocessing option.

Hello, I have never heard of this unfavorable direction angle for so many years of design, this angle reflects the relationship between the most unfavorable direction angle and the direction of the structural anti-lateral force member, and it is the characteristics of the structure itself, unless you can greatly change the layout of the building, otherwise it cannot be adjusted.

The backfill with an angle of less than 15 degrees is useless, PKPM is only calculated according to the normal one, and it will not have anything to do with your backfill, as long as it is less than 15 degrees, don't care

There is a button that automatically calculates the most unfavorable direction, which can be checked.

Diagonal direction** number fill in 1

There is "angle between horizontal force and global coordinates" in the parameters, but I don't know if you are referring to this.

If it is close to the positive direction of 90°, it does not need to be backfilled, and if it is greater than 15°, it is required to backfill within the angle between the horizontal force and the overall coordinates.