Axial force of beam on yjk sloping roof

1. The axial force at the upper end of each column is obtained by adding the shear force at the end of the transverse frame beam, the reaction force at the end of the longitudinal frame beam (calculated according to the simply supported beam) and the axial force from the upper column; The axial force at the lower end of each column is the axial force at the upper end plus the self weight of the column

vertical load is the gravity of various structural members and attachments perpendicular to the ground.

2. 1. If you have two or more inclined plates, the elevation of the same point is different when the component is inclined. As long as the elevation difference of the same point where the two plates intersect exceeds 50, the component reading with the plate height will fail. 2. Are you talking about the component method as a whole or as a single component? Whether the fixed length, concrete grade, anchorage and lap setting are the same. It's not clear until you look at the picture

3. The rigidity checking calculation of inclined beam of steel ladder is the checking calculation of its bending deflection. The axial force of its load is very small at the maximum bending moment section, and its influence on deflection can be ignored.

4. PKM is the calculation result of the member, including all the internal force combinations. The specific operation is in SATWE → analysis result graphics and text display → graphics file output → concrete component reinforcement and steel component checking diagram, right toolbar [component information], and then you can select beam, column and wall. For example, if you want to see the internal force of a beam, now click the beam, and then click the beam you want to see in the plan, The relevant internal force and reinforcement result files will be automatically generated.

5. This kind of calculation avoids the unsafe hidden danger which may be caused by the traditional software simplifying this kind of load into the approximate treatment method of uniform floor load. Yjk provides a design method of the whole floor according to the finite element calculation and considering the elastic deformation of the beam. The traditional software considers that there is no displacement in the vertical direction of the beam and the torsional stiffness of the beam can not be considered when designing the floor slab, which is quite different from the actual situation. Especially in the primary and secondary beam structure, compared with the traditional software, the yjk results show that the bending moment of the main beam and the mid span of the floor slab are much larger (the bending moment of the secondary beam is reced), The whole structure presents the stress state of a large room surrounded by main beams. It shows that the traditional reinforcement method is not safe sometimes. This function of traditional software is not perfect.

7. [structural designer] question 1: beam to beam load, you need to know why this load occurs. It's because beams carry the weight of the wall above. For the frame structure, the beams and columns form the frame, and then the walls are built on the beams. The walls are just additional weight. For masonry structure, block brick is the main structure.

8. "Zhejiang 03 civil engineering quota" basic calculation beam plate, as long as the distinction between the well shaped plate, ribbed plate these special on the line
in addition, it varies from place to place. Generally, it is used according to the angle, and it is used according to the ordinary flat plate within 10 degrees. The multiplication factor of 10-30 degrees artificial material is 1.1, and that of 30 degrees artificial material is 1.2
within 10 degrees, it shall be applied as ordinary flat plate, the artificial content of 10-30 degrees shall be multiplied by 1.1, and the steel support shall be multiplied by 1.3. The artificial content of more than 30-60 degrees is multiplied by 1.2, and the steel support is multiplied by 1.5. 60 degrees above the wall according to the corresponding quota set

beam slab refers to the integration of beam (including main beam and secondary beam) and slab, and its engineering quantity is calculated according to the total volume of beam and slab; The volume of beam accounts for more than 20% of the total volume of beam and slab, and the engineering quantity is calculated according to the total volume of beam and slab; The beam volume with beam and slab accounts for more than 40% of the total volume of beam and slab, and the formwork is artificially multiplied by 1.18 coefficient. Beamless plate refers to the plate directly supported by column (the volume of column cap is incorporated into the plate) without beam (except ring beam). Plate refers to the plate directly supported by the wall without beam (except ring beam).

9. Coupling beam refers to the beam connecting the wall limb and the wall limb in the plane of the wall limb in the shear wall structure and frame shear wall structure. Coupling beam has the characteristics of small span, large section and large rigidity of wall connected with coupling beam. Generally, the internal force of coupling beam is very large under wind load and earthquake. In the internal force calculation, the stiffness of coupling beam is generally reced, but the displacement calculation is generally not reced
let's put it in a more popular way. Coupling beam is a kind of stress component with an opening or disconnection in the middle of two walls, but the stress requirement is to be connected together. There is a hole under the coupling beam.

10. Basically, it's almost the same. Just make do with it. The drawing review center can recognize it. Of course, we have to analyze and judge the calculation results by ourselves. We can't design blindly.