How to calculate the concentrated force and bending moment at th

1. Hello, is that right
mid span load
superposition method: first, consider the bending moment of the left p to the mid span, because there is no given bearing number, I temporarily call the left bearing RA, and the right bearing RB
(1) first calculate the bearing reaction RA = P (2 / 3L) &# 178 1+2/3)/L² RB=P1/3L² 1+1/3)/L² Then Ma = - P (L / 3) (2L / 3) &# 178 can be obtained/ L² MB=-P(L/3)²( 2L/3)/L² < (2) calculate the left p-to-mid-span bending moment M1 = ma + ral / 2-P (L / 2-L / 3)
(3) also calculate the right p-to-mid-span bending moment M2
(4) add M1 + m2, then M = M1 + M2 = PL / 9
this is the idea, the process is too complex, I will not repeat it here
statics manual gives a formula for calculating the bending moment of two symmetrical point loads consolidated at both ends
m = PA & # 178/ L A is the distance from the point load to the fixed end, which is L / 3
I hope it is helpful for you

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3.

Bending moment = (F + L) * 2 / M

where 4T should be understood as the total weight, then the uniformly distributed load q = 40 / L. users need to understand whether the two ends of the beam are simply supported on the column or fixed on the concrete column

If 4T is the total weight and the two ends of the beam are simply supported on the column, the maximum bending moment is at the midspan section. The calculation formula of bending moment M on this section is as follows: M = 1 / 8 · QL & # 178; Where l is the calculation span = 1.05 × The clear span is 3.5 = 3.675 (m), so q = 40 / 3.675 = 10.88kn/m

∴M＝1/8·qL² ＝ zero point one two five × ten point eight eight × 3.675²＝ 18.37KN·m

if the beam is embedded in the column, calculate the fixed support, and the maximum bending moment is at the support; if the beam is only built on the column, then it should be simply supported, and the maximum bending moment is in the middle of the span. Check the structural static calculation manual

extended data:

precautions:

1. The bending moment at the fixed end is different from that mentioned above. If the two ends of a beam are fixed and subjected to uniform load, the bending moment at the middle of the span is smaller than that at the fixed end. Generally, the fixed end bending moment is larger, but it also depends on the situation

The bending moment at the fixed end is the bending moment at the fixed end, but the bending moment is different from that mentioned above. If the two ends of a beam are fixed and subjected to uniform load, the bending moment at the middle of the span is smaller than that at the fixed end

Generally, the fixed end bending moment is larger, but it also depends on the situation. The resultant moment of the normal distribution of internal force component on the cross section is called bending moment

4. The bending moment at the bottom of the beam is positive, and the bending moment at the top of the beam or the beam surface is negative. The positive sign of the bending moment of the column section is determined by the direction around the centroid, which is positive clockwise and negative anticlockwise. Fixed end bending moment belongs to bending moment, which is because it is constrained by one or more fixed joints

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[the fifth two are the proction week (the week of proction in a year)

[the sixth to eighth three digits are the unique identifier of the equipment (different from the same batch of equipment)

[the ninth, tenth, Eighth digits] The eleventh digit is the color and model identification of the device, and the last digit is the version identification of the device (mainly capacity identification, 16GB 32GB version, etc.)

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factory: China
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[mobile phone - Settings - General - about this machine], according to the last two or one letter,
, ZP is the Hong Kong Version, ch is the Bank of China, ll is the American version RS is Russia
GR is Greece, IP is Italy, PP is Philippines, j is Japanese version, KH is Korea
C is Canadian version, X is Australian or New Zealand version, B is British version,
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the term "housing provident fund" as mentioned in these Regulations refers to the long-term housing provident fund deposited by state organs, state-owned enterprises, urban collective enterprises, foreign-invested enterprises, urban private enterprises and other urban enterprises, institutions, private non enterprise units, social organizations (hereinafter referred to as units) and their employees
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