How to calculate the horizontal FW concentration force at the to
Publish: 2021-05-02 16:58:17
1. The load transferred from the floor is transferred to the beam
the load of the beam is transferred to the column
according to one-way slab or two-way slab, the dead load and live load are combined and distributed to the beam according to the coefficient.
the load of the beam is transferred to the column
according to one-way slab or two-way slab, the dead load and live load are combined and distributed to the beam according to the coefficient.
2. There are limitations in manual calculation, so it is impossible to carry out spatial collaborative calculation for frame structure. Therefore, for relatively simple and regular frame structure, plane frame calculation is often carried out only for the transverse frame (main stress direction) which plays a controlling role, and out of plane frame calculation is no longer carried out, That is to say, it is assumed that the moment of the beam column joint is balanced outside the plane, and only the vertical force is transferred. The vertical force adopts the fixed end beam at both ends of the single span, and the reaction force of the beam support is calculated and superimposed on the transverse frame joint. Thus, from the perspective of spatial system of frame structure, the error of manual calculation is great. I'm sorry, because it's not easy to explain your two questions separately. I kneaded them together according to my thinking, but the organization is not very clear, and I don't know if this explanation can be made clear.
3. Do you want to know the horizontal concentrated force on the column or the axial force on the column? If the axial force is natural, according to the sum of the constant live load transmitted by the beam and slab that the column bears, that is, all the loads within the loading area of the column, including all floors from top to bottom, the live load can be reced according to the number of floors, referring to the load specification.
4. There is no punctuation in your sentence "how to calculate the concentrated load of the middle column of the top column of the two-way slab", which is difficult for ordinary people to understand. According to my understanding, is it:
(there is a building, the top floor is a two-way slab, I want to know how to calculate the concentrated load of the top (in the structure) column and the middle (intermediate) column of the two-way slab? If it is such a question, it will be easy for people to answer you
the middle column bears the "all" load from the slab structure in the range of each adjacent span and "1 / 2 of each range" from the adjacent span column.
(there is a building, the top floor is a two-way slab, I want to know how to calculate the concentrated load of the top (in the structure) column and the middle (intermediate) column of the two-way slab? If it is such a question, it will be easy for people to answer you
the middle column bears the "all" load from the slab structure in the range of each adjacent span and "1 / 2 of each range" from the adjacent span column.
5. Wind load, distributed load acting in horizontal direction, is uniformly distributed in plane (KN / M & # 178;) in load code for building structures (GB 5009-2012) There is no difference between horizontal wind load and concentrated wind load
according to the statistics of different regions and cities in China over the years, the basic wind pressure Wo of 10-year return period (r = 10), 50 year return period (r = 50) and 100 year return period (r = 100) is summarized and sorted out, and the standard value of wind load wk is obtained through calculation= β z· μ s· μ z·wo (KN/m²), Acting on the retaining wall, the width of the retaining wall is taken as the line load kn / M obtained by multiplying the House Bay (set), acting on the column, taking the column foot as the fixed end and the roof truss node as the hinge, participating in the bent analysis to obtain the load effect (bending moment, axial force 'shear') of the key section of the column, and then carrying out the section design calculation
only in high-rise buildings, the standard value of the wind load acting on the side column is the concentrated load of the composite joint for the overall analysis of the frame. When it comes to the section design calculation of the side column, the line load kn / m should act on the top of the column along the column height.
according to the statistics of different regions and cities in China over the years, the basic wind pressure Wo of 10-year return period (r = 10), 50 year return period (r = 50) and 100 year return period (r = 100) is summarized and sorted out, and the standard value of wind load wk is obtained through calculation= β z· μ s· μ z·wo (KN/m²), Acting on the retaining wall, the width of the retaining wall is taken as the line load kn / M obtained by multiplying the House Bay (set), acting on the column, taking the column foot as the fixed end and the roof truss node as the hinge, participating in the bent analysis to obtain the load effect (bending moment, axial force 'shear') of the key section of the column, and then carrying out the section design calculation
only in high-rise buildings, the standard value of the wind load acting on the side column is the concentrated load of the composite joint for the overall analysis of the frame. When it comes to the section design calculation of the side column, the line load kn / m should act on the top of the column along the column height.
6. According to the lateral stiffness distribution of the column, if the column section is the same, it is evenly distributed to each column.
7. It should be said that it reflects the idea of displacement method.
you mix the concentrated force at the top of the column with the case of any load, and then look at the volume of concrete
the case of any load: 1. Add hinged bearing, and calculate the bearing reaction (look up the table)
2. The reaction force of support is reversely added back to the original structure, and the shear force is distributed
3. The shear force at the top of two columns can be calculated in the above two steps and added (pay attention to the direction)< 4. Draw bending moment diagram
you mix the concentrated force at the top of the column with the case of any load, and then look at the volume of concrete
the case of any load: 1. Add hinged bearing, and calculate the bearing reaction (look up the table)
2. The reaction force of support is reversely added back to the original structure, and the shear force is distributed
3. The shear force at the top of two columns can be calculated in the above two steps and added (pay attention to the direction)< 4. Draw bending moment diagram
8. It is not called "standard value of concentrated load"
the reaction of the frame beam acting on the support and the reaction of the coupling beam acting on the support is the vertical concentrated load on the top of the column, which is divided into standard combination value and basic combination value. The topic did not say the span of the frame beam, roof use (different live load standard value), so it can not be calculated
in addition, the requirements of the title are not accurately stated. Maybe my guess above is wrong!
the reaction of the frame beam acting on the support and the reaction of the coupling beam acting on the support is the vertical concentrated load on the top of the column, which is divided into standard combination value and basic combination value. The topic did not say the span of the frame beam, roof use (different live load standard value), so it can not be calculated
in addition, the requirements of the title are not accurately stated. Maybe my guess above is wrong!
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