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How to use pkpm to calculate a frame

To calculate the internal forces of a plane frame, you must first: set the size, number of floors, height of each floor and calculation diagram of the frame; estimate the cross-sectional dimensions of beams and columns, and calculate the linear stiffness and rod stiffness of each component. The number of pieces and node numbers; calculate the permanent load and various variable loads acting on it, and combine the loads according to the carrying capacity and normal use. Houses that require seismic verification according to specifications also need seismic combination.

Hand calculation: Among various approximation methods, it is recommended to use the iterative method (Carney method) to calculate the maximum bending moment, maximum shear force, and Maximum axial force. This step is the most troublesome work. The calculation of normal use conditions also requires setting the material strength.

Computer calculation: just use pk software or satw. software. Enter the various data required, and the results may need to be adjusted before being entered.

Extended information:

pkpm introduction:

1. The PK module has two major functions: two-dimensional structural calculation and reinforced concrete beam and column construction drawing drawing:

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The module itself provides a structural calculation software for planar rod systems, which is suitable for various regular and complex types of frame structures, frame rack structures, rack structures in industrial and civil buildings, and shear walls are simplified into wall structures. Type frame structures and continuous beams, arch structures, trusses, etc. The scale is within 30 floors and 20 spans.

In the entire PKPM system, PK is responsible for the auxiliary design of reinforced concrete beams and columns construction drawings. In addition to relaying the two-dimensional calculation results of PK to complete the construction drawing-assisted design of reinforced concrete frames, racks, and continuous beams, it can also relay the calculation results of multi-story three-dimensional analysis software TAT, SATWE, and PMSAP as well as brick-concrete bottom frames and frame support beams. Calculate the result.

It can provide users with four ways to draw construction drawings of beams and columns, including overall drawing of beams and columns, separate drawing of beams and columns, plan view representation of beams and columns reinforcement, and construction drawings of beams and columns in Guangdong area, and 100 Beam and column construction drawings of high-rise buildings below the first floor.

2. PK software can handle various situations such as orthogonal or oblique beams and columns, staggered beams, drawn beams and columns, unequal heights of bottom columns, hinged roof beams, etc. It can set overhangs, corbels and secondary beams at any position, and can draw ten Several cross-section forms of beams can be drawn, including folded beams, haunched beams, variable-section beams, rectangular, I-beams, circular columns or row columns, and column stirrups in various forms.

3. Calculation and verification of strong columns and weak beams, strong shear and weak bending, joint cores, column axial compression ratios, column volume hoop ratios, and weak layers under rare earthquakes are also carried out according to the requirements of the new code. Elastic-plastic displacement calculation, vertical seismic force calculation, frame beam crack width calculation, and beam deflection calculation.

4. Automatically complete the configuration of structural steel bars according to new specifications and construction manuals.

5. It has strong functions such as automatic reinforcement selection, layer-span section merging, and automatic layout. It also provides designers with multiple ways to intervene in construction drawings such as steel reinforcement selection, layout, and structural reinforcement. result.

6. Under the Chinese menu prompts, a wealth of calculation model diagrams and result graphics are provided, as well as template diagrams and steel bar material tables.

7. Can be connected with "PMCAD" software to automatically guide loads and generate plane rod data files required for structural calculations.

8. The program can finally generate a database of actual steel bars for beams and columns, providing data for subsequent time history analysis, budget estimation software, etc.

Structural plane computer-aided design software (PMCAD):

PMCAD is the core of the entire structural CAD. The whole-building structural model it establishes is the basis of PKPM's two-dimensional and three-dimensional structural calculation software. The pre-processing part is also an essential interface software for construction drawing design software such as beams, columns, shear walls, and floors, and basic CAD.

PMCAD is also a necessary interface between architectural CAD and structures.

Use a simple and easy-to-learn human-computer interaction method to input the layout of each floor, the secondary beams, prefabricated panels, openings, staggered floors, overhangs and other information of each floor, as well as the external load information. During the process, functions such as interruption, modification, copying, querying, and continuing operations are provided at any time.

Automatically conduct load transmission from floor slabs to secondary beams, secondary beams to load-bearing beams, automatically calculate the self-weight of the structure, automatically calculate the loads input through human-computer interaction, and form a load database for the entire building, which can be used by the user at any time Query and modify any part of the data. This data can automatically provide data files to various structural calculation software of the PKPM series, and can also provide data for continuous beam and floor calculations.

Draw structural plans and floor reinforcement diagrams for various types of structures. Including the plan layout, size, deviation axis of columns, beams, walls and openings, drawing the axis and total dimension line, drawing the layout of prefabricated panels, secondary beams and floor openings, calculating the internal force and reinforcement of the cast-in-place floor slab and drawing the slab Reinforcement diagram. Draw a large diagram of the ring-beam structural column joints of a brick-concrete structure.