What is the difference between the roles of frame beams and secondary beams in a structure?

Frame beams are mainly used for earthquake resistance, and secondary beams are used to support partition walls.

Secondary beams are beams that are placed on frame beams at both ends.

Frame beams refer to beams that are connected to frame columns at both ends, or beams that are connected to shear walls at both ends but have a span-to-height ratio of not less than 5.

The role of frame beams and secondary beams in the structure:

1. The anchorage length of the bottom reinforcement of the secondary beam beam in the support is generally 12d, and the anchorage length of the beam bottom reinforcement of the frame beam in the support is the seismic anchorage length lae.

2. There is no requirement for the minimum diameter, no requirement for the infill area and no requirement for the non-infill area of the secondary beam, and only needs to meet the calculation requirements. The frame beams have different requirements for the diameter and spacing of stirrups according to different seismic grades, which not only meet the calculation requirements, but also meet the structural requirements.

3. The anchorage length of the top reinforcement of the secondary beam beam in the support is the tensile anchorage length la, and the anchorage length of the beam top reinforcement of the frame beam in the support is the seismic anchorage length lae.

Summary. Hello. The forms of loads acting on secondary beams are permanent loads (also known as dead loads) and variable loads (also known as live loads).

Hello. The forms of loads acting on secondary beams are permanent loads (also known as dead loads) and variable loads (also known as live loads).

The load on the calculation unit of the secondary beam is mainly the self-weight of the secondary beam, the dead load and the live load transmitted from the floor slab, and the three load holes after the simplification of the branch are the slow linear loads acting on the secondary beam. The load transmitted from the floor slab can be obtained by multiplying the width of the calculation unit of the secondary beam by the dead load or live load of the floor slab, and the self-weight of the secondary beam is mainly obtained by multiplying the weight of the concrete by the cross-sectional area of the secondary beam.

Building frame structure, the beam has the main beam L and the secondary beam CL, the frame beam, the tie beam, the tic-tac-toe beam.

1.In the brick-concrete structure, there are tie beams LL, side beams BL refers to the outermost beam of the balcony, pick beams TL refers to the main beam outside the balcony, door lintel MGL, window lintel CGL, and ring beam QL.

2.The roof frame beam refers to the roof load-bearing beam, which plays the role of roof load-bearing, and the upturned beam refers to the beam raised on the edge of the roof drainage ditch or canopy, which blocks the overflow of water and changes the direction of drainage.

3.Functionally, there are structural beams, such as foundation ground beams, frame beams, etc., which together form a spatial structural system with vertical components such as columns and load-bearing walls, and structural beams, such as ring beams, lintel beams, connecting beams, etc., which play a structural role such as crack resistance, seismic resistance, and stability.

4.According to the structural engineering properties, beams can be divided into frame beams, frame beams supported by shear walls, inner frame beams, beams, masonry wall beams, masonry lintels, shear wall connecting beams, shear wall dark beams, and shear wall frame beams.

5.The ground beam is also called the foundation beam, the foundation beam, simply put, the beam on the foundation, generally used in the frame structure and the frame-shear structure, the frame column falls at the intersection of the ground beam or the ground beam. Its main function is to support the superstructure and transfer the load of the superstructure to the foundation.

Primary and secondary beams, frame beams and non-frame beams are common types of beams in building structure cracks, and their similarities and differences are as follows:1Primary and secondary beams:

Primary and secondary beams refer to beams that play a primary load-bearing role and a beam that plays a secondary load-bearing role in the building structure. The main beam is usually a beam with a larger span, and the secondary beam is a beam with a smaller span. The distinction between primary and secondary beams is mainly based on their load-bearing role, not according to their form or type of structure.

2.Frame beams: Frame beams refer to beams in a frame structure consisting of multiple beams and columns.

Frame beams are usually composed of horizontal beams and vertical columns, and their high function is to take the weight and external loads of the building and transfer them to the foundation. Frame beams are characterized by simple structure, strong load-bearing capacity and high stiffness. 3.

Non-frame beams: Non-frame beams are beams that are not part of the frame structure in the building structure. Non-frame beams are usually stand-alone beams whose role is to take the weight and external loads of the building and transfer them to the foundation.

Non-frame beams are characterized by simple structure, relatively weak load-bearing capacity, and relatively small stiffness. In general, primary and secondary beams are based on load-bearing roles, while frame beams and non-frame beams are based on the type of structure. The difference between frame beams and non-frame beams is whether they belong to a frame structure or not, frame beams have a more complex structure with stronger load-bearing capacity and rigidity, while non-frame beams are relatively simple.

Summary. 1. The main beam refers to the beam on which the load is directly transmitted to the column or wall through the supports at both ends. 2. The secondary beam is in the upper part of the main beam, which mainly plays the role of transferring load.

At the junction of the main beam and the secondary beam, the main beam can be regarded as the support (fixed support) of the secondary beam. The length of the reinforcement of the secondary beam extending into the main beam as long as it meets the requirements of the anchorage length. The anchorage length of the reinforcement has nothing to do with the span of the beam, but only with the tensile design strength of the reinforcement, the tensile design strength of the concrete, and the diameter and shape of the reinforcement.

Complaint 3, when the spacing of the load-bearing wall is not large, such as the kitchen room, toilet room, reinforced concrete floor slab can be directly placed on the wall, no beams and columns, the span of the plate is generally 2-3 meters, and the thickness of the board is about 70-80mm.

What is the span of the main beam, secondary beam and slab in the building structure?

1. The main beam refers to the beam on which the load is directly transmitted to the column or wall through the supports at both ends. 2. The secondary beam is in the upper part of the main beam, which mainly plays the role of transferring load. At the junction of the main beam and the secondary beam, the main beam can be regarded as the support (fixed support) of the secondary beam.

The length of the reinforcement of the secondary beam extending into the main beam as long as it meets the requirements of the anchorage length. The anchorage length of the reinforcement has nothing to do with the span of the beam, but only with the tensile design strength of the reinforcement, the tensile design strength of the concrete, and the diameter and shape of the reinforcement. Complaint 3, when the spacing of the load-bearing wall is not large, such as the kitchen room, toilet room, reinforced concrete floor slab can be directly placed on the wall, no beams and columns, the span of the plate is generally 2-3 meters, and the thickness of the board is about 70-80mm.

The span of the main beam, secondary beam, and slab in the building structure refers to the spacing between the two beams, and the span of the slab refers to the length of the slab, and how many meters it spans.