What are axial tension and small eccentric tension members

1. Axial tension member: the component that bears the axial force acting through the cross-sectional mandrel of the component, when this axial force is tensile force, it is called the axial tension member, referred to as the axial tie rod.

2. Small eccentric tension member: the tensile force action point of the component deviates from the axis of the component, so that the component is both tensile and bending, and the eccentricity is small, it is called a small eccentric tension member.

3. Axial stress members include axial tension members and axial compression members. There are two types of eccentric stress members: eccentric tension members and eccentric compression members. Among them, eccentric tension members are divided into large eccentric tension members and small eccentric tension members. Eccentric tension members are further divided into large eccentric tension members and small eccentric tension members.

The tensile force acts on the axial position of the component, and the case without eccentric bending moment is called the axial tension member, and the small eccentricity is that there is a certain eccentricity between the tensile force action point and the axis, and the small eccentricity is called the small eccentric tension member.

The longitudinal force action position of the small eccentric tension member is within the resultant force point of the stressed rib of the component cross-section, and the action position of the large eccentric longitudinal force is outside the resultant force point of the stressed rib of the component cross-section. Whether there is a compression zone in the cross-section of the component, generally there is a compression area for large eccentricity, and there is no small eccentricity, I generally judge this way, and it is inaccurate to judge the size eccentricity by the size of the eccentricity.

When the small eccentric tension member is damaged, the reinforcement ag reaches?

The basis for distinguishing large and small eccentric tension reinforced concrete components includes: the position of axial tension, whether there is a compression zone in the cross-section, the development process of cracks and the failure mechanism of the component.

1. Small eccentric tension members.

When the longitudinal axial force acts within the reinforcement on both sides, the cross-section is tensioned on the side close to the longitudinal tensile force, while the side away from the longitudinal tensile force may be tensile or compressed. When the eccentricity is small, the whole section is tensile and the stress on the side close to the longitudinal force is larger, and the stress on the side away from the longitudinal force is smaller. When the eccentricity is large, the side close to the longitudinal reinforcement is compressed, and the side away from the longitudinal reinforcement is compressed.

With the increase of longitudinal tensile force, the cross-section stress also increases gradually, and when the concrete on the side with the larger tensile stress reaches its tensile limit, the cross-section cracks. For cases with small eccentricities, the concrete cracks will quickly penetrate after cracking; For the case of large eccentricity, due to the withdrawal of the concrete from the crack in the tension zone, according to the equilibrium condition of the force on the cross-section, the compressive stress in the nip zone also disappears, and is converted into tensile stress, and then the crack penetrates.

After the small eccentric tension member forms a through crack, the full-section concrete withdraws from the work, and the tensile force is all borne by the steel bar, and when the steel bar stress reaches its yield strength, the member reaches the ultimate bearing capacity of the positive section and is destroyed.

2. Large eccentric tension members.

When the longitudinal tension acts outside the reinforcement on both sides, the cross-section is compressed on the side close to the longitudinal tension and the side away from the longitudinal tension. With the increase of axial force, the tensile stress of the concrete on the tensile side of the tension side gradually increases, and the strain reaches its limit tensile strain cracking, although the cross-section is cracked, there is always a compression area, otherwise the external force can not be balanced. After the concrete is cracked, the crack does not penetrate the entire section.

When the reinforcement of the tensile side is moderate, with the increase of the longitudinal axial force, the tensile reinforcement yields first, the crack is further developed, the compression zone decreases, and the compressive stress increases, until the concrete at the edge of the compression reaches the ultimate compressive strain, and finally the compressive steel bar yields and the concrete is crushed.

When there are too many reinforcements on the tension side, it is possible that the concrete on the compression side will be crushed first, while the reinforcement on the tension side will never yield, and its failure is a brittle failure, which should be avoided in the design.

The longitudinally stressed steel bars of axial tension and small eccentric tension members should be mechanically connected or welded. The diameter of the tensile steel bar is greater than 25mm, and the compression steel bar or the diameter of the steel bar is greater than 28mm should be mechanically connected or welded.

The longitudinal stress reinforcement of axial tension and small eccentric tension liquid envy members shall not be lashed and lapped; When the steel bars in other components are tied and lapped, the diameter of the tensile steel bar should not be greater than 25mm, and the diameter of the compression steel bar should not be greater than 28mm.

Axial tension member: the member that bears the action of the axial force acting on the axial axis of the cut-off return surface of the member, when this axial force is tensile force, it is called the axial tension member, referred to as the axial tie rod.

Axial tension or small eccentric tension members refer to the components under the action of axial tension or slightly eccentricity caused by axial tension in mechanical structures. This kind of component generally has a circular cross-section, and the axial tensile force acts on the axis of the member, and the internal force of the component is evenly distributed. Common axial tension or small eccentric tension components include bolts, pins, bushings, etc.

These components are often used in mechanical devices that connect and transmit forces. In these components, the tension of the axial center causes the member to deform in tension. In order to be able to design and select these components correctly, factors such as the strength and stiffness of the material need to be considered to ensure that the components do not produce excessive deformation or failure during the stress process.

In practical applications, axial tension or small eccentric tension members may also be subjected to other loads, such as bending moments, shear forces, etc. Therefore, in the design and calculation process, it is also necessary to consider the influence of these additional loads on the components, and reasonably determine the size and material selection of the components to meet the work requirements and safety performance. <>

What is the part of the axial tension or small eccentric tension member.

Axial tension or small eccentric tension member refers to the component under the action of axial tension such as chain force or slightly eccentricity caused by axial tension in mechanical structure. This kind of component generally has a circular cross-section, and the axial tensile force acts on the axis of the member, and the internal force of the component is evenly distributed. The axial tension or small eccentric tension components of Chang Slag Hao Sun see include bolts, pins, shaft sleeves, etc.

These components are often used in mechanical devices that connect and transmit forces. In these components, the tension of the axial center causes the member to deform in tension. In order to be able to correctly design and select these components, factors such as the strength and stiffness of the material need to be considered to ensure that the components do not cause excessive deformation or failure during the stress process.

In practical applications, axial tension or small eccentric tension members may also be subjected to other loads, such as bending moments, shear forces, etc. Therefore, in the design and calculation process, it is also necessary to consider the influence of these additional loads on the components, and reasonably determine the size and material selection of the components to meet the work requirements and safety performance. <>

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Axial tension structure or small eccentric tension member refers to the tensile force of the member section transmitted through the geometric center (axis) or position close to the geometric center (small eccentricity) of the circular section under the action of tensile force. In construction and civil engineering, common axial tension components include columns, beam-column joints, side cracks, and steel cables. These components bear and transmit tensile forces through their geometric center or near the geometric center under tensile force, ensuring the stability of the structure.

The design of axial tension members needs to consider factors such as the characteristics of the material, the mechanical properties, the requirements of the structure and the environment in which it is used. At the same time, it is also necessary to carry out appropriate force analysis and calculation to ensure the safety and reliability of the components. <>

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Axial tension or small eccentric tension member refers to the part where the force of the member is concentrated on or near the axis of the member under the action of tensile force. This type of member is usually composed of members, beams, columns, etc., and its tensile force acts in a direction similar to the direction of the member's axis or near the axis. In this type of member, the forces are concentrated on or near the axis, while the other parts are subjected to less tensile forces.

What is the part of the axial tension or small eccentric tension member.

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Poke the face of the celery] axial tension or small bias bixin tension member refers to the force of the component under the action of tensile force, the force of the component is concentrated on the axis of the component or near the axis. This type of member is usually composed of members, beams, columns, etc., and its tensile force acts in a direction similar to the direction of the member's axis or near the axis. In this type of member, the forces are concentrated on or near the axis, while the other parts are subjected to less tensile forces.

Dear, the following are related extensions, I hope it will be helpful to you<><

In the axial tension or small eccentric tension member, the force is concentrated on the axis or near the axis, and this kind of member usually has the following characteristics: 1Axial tension member:

The direction of the tensile force is exactly the same as the axis of the member. Under the action of force, the whole section of this kind of member is subjected to tensile force, and the force is evenly distributed, and the stress is relatively small. Common axial tension members include tie rods, cables, etc.

2.Small eccentric tension member: the direction of tension force is deviated from the axis of the member.

Under the action of force, the force of this component is concentrated in a part of the rock section near the axis, and the other part of the section is less stressed. Common small eccentric tension members include beams, columns, etc. Axial tension or small eccentric tension members are widely used in engineering.

They are commonly used for structural components that are subjected to tensile forces, such as booms, bridge beams, support columns, etc. In the design and construction process, it is necessary to reasonably select the material, cross-sectional shape and size to ensure that the components have sufficient strength and stiffness under the force, and at the same time meet the design requirements. <>

In the construction project, the tension components mainly include beams (partly compressed, partly tensioned), and the compression structures mainly include columns and walls.

When the pressure application point of the component deviates from the axis of the component, so that the component is both compressed and bent, it is an eccentric compression member (also known as a compression-bending member). It is commonly found in the upper chords of roof trusses, frame structural columns, brick walls and brick stacks.

Tensile structures or components are also more common, such as the lower chord of the roof truss and the tensile web member. There are two main types of tensile members in reinforced concrete structures: axial tension and eccentric tension. The axial tension member refers to the member whose tensile force coincides with the bending line of the shaft head, because the tensile strength of the concrete is very low, the axial tension member is actually the tension of the steel bar, and its critical state calculation formula is n=fyas.

In eccentric tension members, due to the different magnitude of eccentricities, the failure states are also different, but the differentiation method between large and small eccentric tension members and large and large eccentric compression members is different:

When the axial tensile force acts between the AS resultant point and the A's resultant force point of the reinforcement, it belongs to the small eccentric tensile member (A), and the failure is characterized by the tensile yield failure of the reinforcement, and the concrete Shiqin slippery soil is also tensile and cracked in the whole section at the same time. When the axial tensile force acts outside the AS resultant force point and the A's resultant force point of the reinforcement, it belongs to the large eccentric tensile member (B), when the reinforcement configuration is appropriate, the tensile reinforcement yields during the failure, and the concrete in the compression zone will be crushed, which is similar to the failure of the reinforcement beam.

The small eccentric tension member does not generate pressure on the cross-section, and the whole cross-section is tensile in the whole section, but the tensile force is different in different areas. Large-eccentric tension members generate pressure on one side of the cross-section.