Purlin assembly

Abstract

The utility model provides an enclosing purlin assembly which is used for supporting a servo system, and the enclosing purlin assembly can effectively solve the problem that deformation of a concrete support cannot be actively regulated and controlled in the prior art. The enclosing purlin assembly comprises a fender post and a concrete support, and a steel enclosing purlin, a concrete enclosing purlin and a stand column are arranged between the fender post and the concrete support. The outer sides of the steel enclosing purlins are tightly attached to the inner sides of the fender posts, and the inner sides of the concrete enclosing purlins are connected with the concrete supports. The inner sides of the concrete enclosing purlin and the steel enclosing purlin are parallel, and an empty groove is reserved between the concrete enclosing purlin and the steel enclosing purlin. And a plurality of hydraulic jacks and section steel beams are arranged in the empty groove and are alternately arranged at intervals. Wherein one end of the hydraulic jack abuts against the concrete enclosing purlin, the other end of the hydraulic jack abuts against the steel enclosing purlin, one end of the section steel beam is connected with the steel enclosing purlin, and the other end of the section steel beam abuts against the concrete enclosing purlin. The stand columns are arranged below the concrete enclosing purlins.

Description

Technical Field

[0001] The utility model relates to the field of foundation pit support engineering, in particular to a purlin assembly, which is used for supporting a servo system. Background Art

[0002] Concrete support structure is a commonly used support form for soft soil foundation pits. The reason why this structure is so popular is mainly because it has several significant advantages: first, the structural rigidity is large, which ensures that the support structure can maintain a stable shape when subjected to external pressure, effectively preventing the collapse of the foundation pit; second, it has a high degree of safety, and the compressive strength and durability of the concrete material itself provide it with reliable safety guarantees; finally, the layout is flexible and can be customized according to the actual shape and size of the foundation pit to adapt to various complex engineering environments.

[0003] However, concrete supports also have their inherent limitations. It is a passive force structure, which means that the support structure itself does not actively provide resistance until the retaining wall begins to deform horizontally and squeeze the concrete support. Only when the retaining wall deforms, the concrete support will resist this deformation through its stiffness and provide the necessary support for the retaining wall.

[0004] In addition, in projects with large foundation pits, concrete supports will also face the problems of creep shrinkage and temperature shrinkage. Creep shrinkage is due to the tiny deformation of concrete during long-term stress, which will gradually accumulate and aggravate the horizontal deformation of the foundation pit retaining wall. Temperature shrinkage is due to the volume change of concrete when the temperature changes, especially when the temperature drops, the concrete will shrink, which will also have an adverse effect on the stability of the foundation pit retaining wall. These phenomena will not only affect the safety of the foundation pit itself, but may also pose a potential threat to the surrounding environment, such as damaging the foundation of adjacent buildings and affecting the safety of underground pipelines.

[0005] Therefore, when designing and constructing concrete support structures, it is necessary to fully consider their passive stress characteristics and possible creep shrinkage and temperature shrinkage problems, and take appropriate measures to reduce these risks to ensure the safety of foundation pit projects and the surrounding environment. Utility Model Content

[0006] The purpose of the utility model is to provide a purlin assembly, which is used to support a servo system. The application of the purlin assembly can effectively solve the problem in the prior art that the concrete support cannot actively adjust the deformation.

[0007] The utility model provides a purlin assembly, the purlin assembly comprising a guard pile and a concrete support, and between the guard pile and the concrete support there are:

[0008] A steel purlin, the outer side of which is in close contact with the inner side of the retaining pile;

[0009] Concrete purlin, the inner side of the concrete purlin is connected to the concrete support, the inner sides of the concrete purlin and the steel purlin are parallel, an empty slot is left between the concrete purlin and the steel purlin, a plurality of hydraulic jacks and steel beams are arranged in the empty slot, the hydraulic jacks and the steel beams are arranged alternately, one end of the hydraulic jack supports the concrete purlin, the other end of the hydraulic jack supports the steel purlin, one end of the steel beam is connected to the steel purlin, and the other end of the steel beam supports the concrete purlin;

[0010] The upright column is arranged below the concrete surrounding purlin.

[0011] In one embodiment, steel plates are arranged between the hydraulic jack and the concrete purlin and the steel purlin.

[0012] In one embodiment, the steel guard purlin is fixed to the guard pile by steel corbels and hanger bars.

[0013] In one embodiment, the steel purlins are parallel to the center of the retaining piles.

[0014] In one embodiment, the width of the empty groove is 1 meter, and the width of the empty groove is the distance between the concrete purlin and the steel purlin.

[0015] In one embodiment, the columns are made of lattice angle steel columns or steel pipes or steel sections.

[0016] The purlin assembly of the utility model has the following beneficial effects:

[0017] The utility model uses hydraulic jacks to adjust the axial force of concrete support, can actively provide reliable reaction force to the enclosure wall, can compensate for the horizontal deformation caused by concrete creep shrinkage, temperature shrinkage, etc., and is conducive to reducing the disturbance of the foundation pit deformation to the surrounding environment. In addition, one end of the steel beam is connected to the steel enclosure purlin, and the other end supports the concrete enclosure purlin but is not directly connected to the concrete enclosure purlin 31. Such a design makes the structure more adaptable and has a certain flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the plan layout of the purlin assembly of one embodiment of the utility model;

[0019] Figure 2 The figure is a schematic cross-sectional arrangement diagram of a purlin assembly according to an embodiment of the present invention.

[0020] Reference numerals

[0021] 1. Guard piles;

[0022] 2. Steel purlin;

[0023] 21. Steel corbel;

[0024] 22. Suspension tendons;

[0025] 23. Steel plate;

[0026] 31. Concrete purlin;

[0027] 32. Concrete support;

[0028] 4. Column;

[0029] 5. Hydraulic jack;

[0030] 6. Steel beam. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] like Figure 1 and Figure 2 As shown, the utility model proposes a purlin assembly, which is used to support a servo system. The purlin assembly includes a guard pile 1 and a concrete support 32, and between the guard pile 1 and the concrete support 32 are: a steel purlin 2, a concrete purlin 31 and a column 4. The outer side of the steel purlin 2 is close to the inner side of the guard pile 1, and the inner side of the concrete purlin 31 is connected to the concrete support 32. The concrete purlin 31 is parallel to the inner side of the steel purlin 2, and an empty groove is left between the concrete purlin 31 and the steel purlin 2. A plurality of hydraulic jacks 5 and steel beams 6 are arranged in the empty groove, and the hydraulic jacks 5 and steel beams 6 are arranged alternately. Among them, one end of the hydraulic jack 5 supports the concrete purlin 31, and the other end of the hydraulic jack 5 supports the steel purlin 2. One end of the steel beam 6 is connected to the steel purlin 2, and the other end of the steel beam 6 supports the concrete purlin 31. The column 4 is disposed below the concrete purlin 31 .

[0033] Specifically, one end of the steel beam 6 is welded to the steel purlin 2, and the other end is against the concrete purlin 31 but not directly connected to the concrete purlin 31. Such a design makes the structure flexible and can adapt to different working environments and load conditions. When external conditions (such as temperature, humidity, load, etc.) change, the slight displacement between the steel beam 6 and the concrete purlin 31 can be buffered by this design, thereby avoiding stress concentration and damage caused by excessive rigidity of the structure. The design of not directly connecting one end makes the installation and maintenance process easier. During installation, the steel beam 6 can be welded to the steel purlin 2 first, and then the other end can be against the concrete purlin 31 for positioning. When maintenance or replacement is needed, it is only necessary to adjust the position of the non-connected end, without the need for large-scale disassembly and reconstruction of the entire structure.

[0034] Further, a steel plate 23 is provided between the hydraulic jack 5 and the concrete purlin 31 and the steel purlin 2, see Figure 1 Such a design can increase the contact area and friction force, improve the supporting effect of the hydraulic jack 5, and protect the concrete purlin 31 and the steel purlin 2 from damage.

[0035] Further, the steel purlin 2 is fixed to the retaining pile by means of a steel corbel 21 and a hanger 22. Specifically, one end of the steel corbel 21 is arranged below the steel purlin, and the other end of the steel corbel 21 is fixed to the retaining pile 1. One end of the hanger 22 is arranged above the steel purlin, and the other end of the hanger 22 is fixed to the retaining pile 1. The steel corbel 21 and the hanger 22 can be used as the vertical support structure of the steel purlin 2, and the length and number of the hanger should be calculated and determined according to factors such as the weight, size and installation position of the steel purlin.

[0036] Furthermore, the steel purlin 2 is parallel to the center of the retaining pile. The design of the steel purlin being parallel to the center of the retaining pile can enhance the stability of the entire structure. By connecting the main structure, the steel purlin can prevent the structure from shifting sideways, thereby increasing the overall stability of the building, enabling it to resist the influence of external forces and its own weight.

[0037] Furthermore, the width of the empty groove is 1 meter, and the width of the empty groove is the distance between the concrete purlin 31 and the steel purlin 2 .

[0038] Furthermore, the column 4 is made of a lattice angle steel column, a steel pipe or a steel section. Lattice angle steel columns, steel pipes and steel sections all have high rigidity and strength, can effectively resist external forces and deformation, can significantly enhance the overall rigidity of the structure, and reduce deformation and displacement caused by force. Structures such as lattice angle steel columns and steel sections are composed of multiple rods, which can disperse and reduce the deformation of the rods, thereby improving the stability and safety of the structure.

[0039] The implementation method of the purlin assembly of an embodiment of the utility model comprises the following steps:

[0040] Step 1, construct foundation pit retaining piles 1 and columns 4;

[0041] Step 2: after the foundation pit is excavated to a predetermined elevation, the concrete purlin 31 and the concrete support 32 are constructed, and the steel purlin 2 is installed;

[0042] Step 3, installing the hydraulic jack 5 and the steel beam 6 in the empty slot;

[0043] Among them, when the hydraulic jack 5 has not yet applied the jacking force, the steel purlin 2, the steel beam 6, and the concrete purlin 31 transmit the reaction force of the concrete support 32 to the retaining pile 1 to offset the outer soil pressure borne by the retaining pile 1; when the hydraulic jack 5 applies the jacking force, the jacking force of the hydraulic jack 5 is transmitted to the retaining pile 1 through the steel purlin 2 to offset the outer soil pressure borne by the retaining pile 1.

[0044] The purlin assembly of the utility model has the following beneficial effects:

[0045] The utility model uses hydraulic jacks to adjust the axial force of concrete support, can actively provide reliable reaction force to the enclosure wall, can compensate for the horizontal deformation caused by concrete creep shrinkage, temperature shrinkage, etc., and is conducive to reducing the disturbance of the foundation pit deformation to the surrounding environment. In addition, one end of the steel beam is connected to the steel enclosure purlin, and the other end supports the concrete enclosure purlin but is not directly connected to the concrete enclosure purlin 31. Such a design makes the structure more adaptable and has a certain flexibility.

[0046] It should be noted that, unless otherwise clearly specified and limited, the words "install", "connect", "connect" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. Those skilled in the art can understand their specific meanings in this application according to the specific circumstances. In addition, the orientation or positional relationship indicated by the terms "center, top, bottom, inside, outside" and the like in the text is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0047] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the term "comprising" only indicates that the steps and elements that have been clearly identified are included, and these steps and elements do not constitute an exclusive list. The method or structure may also include other steps or elements.

[0048] The above-mentioned embodiments are only further explanations of the utility model, and are not intended to limit the utility model in other forms. The utility model may also have other various embodiments. Without departing from the spirit and essence of the utility model, those skilled in the art may make various corresponding modifications and changes according to the utility model, but these corresponding modifications and changes shall fall within the protection scope of the utility model.

Claims

1. A purlin assembly, the purlin assembly is used to support a servo system, characterized in that: The purlin assembly includes a guard pile and a concrete support, and between the guard pile and the concrete support there are: A steel purlin, the outer side of which is in close contact with the inner side of the retaining pile; Concrete purlin, the inner side of the concrete purlin is connected to the concrete support, the inner sides of the concrete purlin and the steel purlin are parallel, an empty slot is left between the concrete purlin and the steel purlin, a plurality of hydraulic jacks and steel beams are arranged in the empty slot, the hydraulic jacks and the steel beams are arranged alternately, one end of the hydraulic jack supports the concrete purlin, the other end of the hydraulic jack supports the steel purlin, one end of the steel beam is connected to the steel purlin, and the other end of the steel beam supports the concrete purlin; The upright column is arranged below the concrete surrounding purlin.

2. The purlin assembly according to claim 1, characterized in that: Steel plates are installed between the hydraulic jack and the concrete purlin and steel purlin.

3. The purlin assembly according to claim 1, characterized in that: The steel guard purlin is fixed to the guard piles by steel corbels and hangers.

4. The purlin assembly according to claim 1, characterized in that: The steel purlin is parallel to the center of the retaining pile.

5. The purlin assembly according to claim 1, characterized in that: The width of the empty groove is 1 meter, and the width of the empty groove is the distance between the concrete purlin and the steel purlin.

6. The purlin assembly according to claim 1, characterized in that: The columns are made of lattice angle steel columns or steel pipes or steel sections.

Images