Xishan subway to Airport Central Station

1. The first step: confirm the basic part and the subsidiary part
(Figure A, AB is the subsidiary part, BC is the basic part; Figure B: AC is the basic part, CD is the subsidiary part)
Step 2: calculate the subsidiary part first, then the basic part (note that the subsidiary part will transfer the force to the basic part)
figure a: calculation formula:
subsidiary part: 5 × four × 2-4 × Ra＝0 The solution shows that the support a is 10kN, and the force is transmitted to the basic 10kg at the B point × four × 4＋10 × 2＋10 × 6＝160kN*M Reaction force YC = 10 + 5 × 4 + 10 = 40kN
the answer of B diagram is: reaction of a bearing is 5kn, reaction of B bearing is 75KN, reaction of D bearing is 20KN

2. The first equation can be listed according to the balance of force, that is, C + Na + Nb = 0
the second equation can be listed according to the balance of moment, which can be used to calculate the moment of point A: C * (L + L / 2) + Nb * L = 0
if it is positive or negative, you can just set it as positive upward or downward, If the solution is negative, it means that it is opposite to the positive direction you set!

3.

It's late today. I can only tell you one method and step. In the figure, AC is the basic structure, CE is the subsidiary structure of AC, and EF is the subsidiary structure of CE, which is divided into three parts from C hinge and e hinge. This problem only has vertical load, C hinge and e hinge only bear and transfer vertical force, not bear and transfer bending moment

the load of the basic structure does not affect the auxiliary structure, and the load of the auxiliary structure is uploaded to the basic structure layer by layer after distribution. According to this method, from right to left, it is divided into three simple beams and calculated step by step. Compare the picture

4. First of all, suppose that point a gives a right upward bearing reaction force, and point B gives an upward reaction force. The length is not clear ~ is it a? FX = 0 fax + QA = 0 fax = - QA MF (b) = - Fay x 2a-qa x a = 0 - Fay = QA square / 2A. The bearing binding force of point a is Fay = - 2 parts of QA, and fax = - QA is opposite to the assumed direction of point a

5.

The simultaneous solution of the above three equations can be obtained: NaX, nay, M

suppose that the left fulcrum is a and the right fulcrum is B

take the distance from point B, then ra * 6 + 8 = 30 * 4 + 4 → RA = 58 / 3kn

RB = 30kn-58 / 3kn = 32 / 3kn

extended data:

calculation of bearing reaction

simply supported beam can be balanced by static force, that is, in the vertical direction, there is constant equation ∑ f = 0,

for hinge joint, there is ∑ M = 0,

for continuous beam, rigid frame and other statically indeterminate, force method or displacement method should be used

the calculated vertical force is fulcrum reaction, and the specific calculation of each support reaction is the calculated fulcrum vertical force divided by the number of supports

6. You can make a supplementary report to the insurance company. It's the same. Because it's a small accident, the traffic police have been involved, so it's easy to handle.

7. In the legend of turret, equipment enchantment is turned on at level 20. Equipment of different quality can be enchanted for different times, which greatly improves the properties of equipment
[enchant consumption]
the following table shows the number of points needed to enchant different quality equipment. It should be mentioned that white equipment cannot be enchanted
enchant times 12345 green 20 --- blue 305080 --- purple 60100160300500
then there is a question, when is the best time to enchant? What equipment is good for enchanting
in the early stage when the level of the team is not high (below level 50), the blue equipment of the main hero is enchanted to level 3. Green equipment can also be enchanted if it has spare power. At this time, the upgrade of the team level is slow, and the purple equipment is not equipped to the hero so quickly (the basic requirement of purple equipment is that the hero is above level 50, and the upper limit of the hero's level is the team level). Therefore, enchanting the blue equipment is a main way to increase the combat power.

8. Give person item ID quantity - give someone an item, If you don't write the quantity, the quantity will be given by default to 64
/ Nick ID name - change someone's name, ID is the name added to the white list
/ backup - run the backup command
/ fireball - launch a fireball (will destroy the square)
/ Heal name - treat someone
/ invsee name - check someone's package
/ Lingning name - Curse (not filling in the name will strike the mouse point) < B R / > / mute name - forbid talking about someone
/ ping-pong
/ see name - check the last exit time of someone
/ TP name1 Name2 - transfer character 1 to character 2
/ TP name - transfer yourself to someone
/ tphere name - transfer someone to yourself
/ tpall - transfer everyone in the server to yourself (big teleportation array)
(top 4) An order needs the other party to be online, but does not need the other party's consent)
/ unlimited ID - give yourself unlimited items
/ weather storm / sun time - change the weather, Thunderstorm or sunny day
/ mmoedit name skname rank - if the mcrpg plug-in is installed, you can use this command to change someone's skill level
/ forestgen - form a forest next to you
/ Pumpkins - form a pumpkin forest (a pumpkin forest with leaves) next to you
/ snow - become what it looks like after snow next to you
/ that - melt snow (and ice)
/ Butcher - kill appendages Tree shape: big - big tree ewquoia - Mahogany tall Sequoia - tall mahogany
birch - shirt tree random - random
/ up height - raise yourself to a certain height, and support yourself with a glass that may be suspended at your feet
worldedit:
hold a wooden axe, left click one corner, right click one corner, The box between the two corners is the selection area:
/ / set ID - change the selected area into an item (if the item cannot be placed or has no placement point, it will be thrown)
/ / undo - restore the last worldedit action
/ / redo - restore the last / / undo (this instruction may be wrong)
/ / move X - move the area X blocks. When moving, it should face the area and news
/ / move x up - move area up x blocks
/ / move x down - move area down x blocks

9. In addition to a treasure to find acting practice and script, if you want to do it yourself, the best way is to open the game currency plus card to play James 21 point game mode