CN210829395U - Suspension beam structure of underground engineering - Google Patents
Suspension beam structure of underground engineering Download PDFInfo
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- CN210829395U CN210829395U CN201921323248.6U CN201921323248U CN210829395U CN 210829395 U CN210829395 U CN 210829395U CN 201921323248 U CN201921323248 U CN 201921323248U CN 210829395 U CN210829395 U CN 210829395U
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Abstract
The utility model discloses a underground works's beam structure that suspends in midair includes: a chamber support body and surrounding rocks arranged on the inner wall of the chamber; the suspension anchor rods are respectively anchored on the underground chamber support body and the surrounding rock; the suspension beam is connected to the suspension anchor rods to be suspended in the underground chamber; the filling body is filled between the chamber support body, the surrounding rock and the suspension beam connected with the suspension anchor rod; the lifting beam is connected to the suspension beam. The utility model discloses can effectively rationally reduce chamber span and height, make full use of underground works space characteristics adopts anchor assembly and suspends the roof beam in midair and replaces traditional beam column support system structure, and the chamber engineering volume that significantly reduces and save steel volume have avoided the complicated construction of reserving the beam nest. The short span system of the whole suspension beam structure solves the problem that long beam column members are difficult to lay tissues from the ground to implement; the position adjustability is good, and the job site is convenient to adjust according to actual conditions.
Description
Technical Field
The utility model relates to an underground works technical field especially relates to an underground works's roof beam structure that suspends in midair.
Background
The steel beams in the existing underground chamber are supported by lifting beams in the chamber in the forms of steel columns, reinforced concrete columns, brackets, embedded beam nests and the like, and although the structures have the characteristics of reliable structure and wide load change adaptive range, the structures have a plurality of defects for the beams with small bearing load.
If a steel upright structure is adopted for supporting the beam, firstly, the span and the height of the chamber need to be increased, and meanwhile, a portal frame type or a travelling frame structure system needs to be formed for supporting the crane beam. The beam-column support system structure needs to increase the size of the chamber correspondingly, further increases the excavation engineering quantity and the steel structure material quantity, undoubtedly increases the chamber engineering quantity and the steel structure material quantity, and also increases the stability control cost of the surrounding rock of the chamber. If the reserved beam nest is adopted to support the hoisting beam, the beam nest is reserved during construction, and a plurality of long beams span the whole chamber span; for the chamber adopting the anchor-spraying support, the reserved beam nest has lower quality.
Aiming at a lifting beam structure in an underground engineering chamber, the traditional beam-column supporting system has the following defects:
1. the stability of the underground engineering is in negative correlation with the span and the height of the chamber, and the larger the span of the chamber is, the larger the influence of the span on the stability of the chamber is; the traditional beam-column support system arrangement requires an increase in the size of the chamber.
2. For the chamber adopting the anchor-spraying support, the reserved beam nest has low quality, and the beam support reliability is also reduced; for the underground chamber supported by concrete, the reserved beam nest construction is relatively complex, and the construction progress is influenced.
3. Steel members using long beam-column systems tend to be long, and it is difficult to lay down the members from the ground and sometimes limited by the size of the cage lifting facility.
In summary, conventional beam-column support systems seek alternative constructions for smaller load lifting beams to provide reasonable savings in engineering and material.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an underground works's roof beam structure that suspends in midair to solve present less load and lift beam engineering volume and material volume big, problem with high costs.
According to the utility model discloses underground works's beam structure that suspends in midair is suitable for and installs in the chamber, it includes to suspend the beam structure in midair: the chamber supporting body and the surrounding rock are arranged on the inner wall of the chamber; the suspension anchor rods are respectively anchored on the chamber support body and the surrounding rock; a suspension beam connected to the plurality of suspension anchors to be suspended in the chamber; a filling body filled between the chamber support body and the surrounding rock and the suspension beam connected with the suspension anchor rod; and the lifting beam is connected to the suspension beam.
According to the utility model discloses underground works's roof beam structure that suspends in midair can effectively rationally reduce chamber span and height through this structure, make full use of underground works space characteristics, adopt anchor assembly and suspend in midair the roof beam and replace traditional beam column support system structure, the chamber engineering volume that significantly reduces with save steel volume, avoided the complicated construction of reserving the beam nest. The short span system of the whole suspension beam structure solves the problem that long beam column members are difficult to lay tissues from the ground to implement; the position adjustability is good, and the job site is convenient to adjust according to actual conditions.
In some embodiments, the infill is a cementitious material poured between the chamber supports and surrounding rock and the suspension beams.
In some embodiments, the chamber support is at least one of an anchor grid jet support, a poured concrete support, and a poured reinforced concrete support.
In some embodiments, the suspension anchor is at least one of a rod anchor and a steel strand anchor.
In some embodiments, the lifting beam is connected to the suspension beam by a connector, or the lifting beam is welded to the suspension beam.
In some embodiments, the suspension beam and the lifting beam are both horizontally disposed, and the lifting beam is vertically or obliquely connected to the bottom of the suspension beam.
In some embodiments, the suspension beams are multiple and located at the same height, and the lifting beam is connected to the multiple suspension beams.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a flow chart of the construction method of the middle suspension beam structure of the present invention.
Reference numerals:
a suspension beam structure 100,
The supporting and surrounding rock 10 of the underground chamber, a plurality of suspension anchor rods 20, a suspension beam 30, a filling body 40, a lifting beam 50 and a connecting piece 60.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar element beams or element beams having like or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element beam referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection can be direct connection or indirect connection through an intermediate medium, and the connection between the interiors of the two element beams can be realized. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The suspension beam structure of the underground engineering according to the embodiment of the present invention will be described with reference to fig. 1.
As shown in fig. 1, the suspension beam structure 100 of the underground engineering according to the embodiment of the present invention is suitable for being installed in a chamber, and the suspension beam structure 100 includes: the supporting body and surrounding rock 10 of the underground chamber, a plurality of suspension anchor rods 20, a suspension beam 30, a filling body 40 and a lifting beam 50.
The chamber support and surrounding rock 10 are provided on the inner wall of the chamber. A plurality of suspension anchors 20 are anchored to the chamber support and the surrounding rock 10, respectively. The suspension beam 30 is connected to a plurality of suspension anchors 20 to be suspended in the chamber, thereby increasing the connection strength between the suspension beam 30 and the chamber support and the surrounding rock 10. The packing 40 is filled between the chamber support and the surrounding rock 10 and the suspension beam 30 to which the suspension anchor 20 has been connected. The lifting beam 50 is connected to the suspension beam 30. Because the top of the chamber support body and the surrounding rock 10 is arched or in other irregular shapes, all parts on the chamber support body and the surrounding rock 10 are uneven, after the suspension beam 30 is connected to the chamber support body and the surrounding rock 10 through the suspension anchor rod 20, a gap exists between the suspension beam 30 and the surrounding rock 10, so that the connection of the suspension beam 30 is unstable, the filling body 40 can be used for filling the gap between the suspension beam 30 and the chamber support body and the surrounding rock 10, the filling body 40 can provide stable constraint for the suspension anchor rod 20 and can also provide a smooth and stable contact surface for the suspension beam 30, and the chamber support body and the surrounding rock 10 enable the connection of the suspension beam 30 and the chamber support body and the surrounding rock 10 to be more stable and stronger, and the requirement on anchoring is relatively lower.
It should be noted that the shape of the gap between the suspension beam 30 and the upper part of the chamber support and the surrounding rock 10 is different, and the filling body 40 is mostly made of fluid material and filled into the gap, so that the material can form the filling body 40 with different shapes after being solidified to adapt to the gaps with different shapes, thereby ensuring the stable connection between the suspension beam 30 and the chamber support and the surrounding rock 10, and the adaptability of the filling body 40 is strong by this way, so as to meet different use requirements.
The utility model discloses in, suspend roof beam 30 in midair through a plurality of stock 20 of suspending in midair and fix on chamber support body and country rock 10, guarantee the stable connection each other through obturator 40, whole beam structure 100 easy operation that suspends in midair, convenient to use.
According to the utility model discloses underground works's roof beam structure 100 suspends in midair can effectively rationally reduce chamber span and height through this structure, make full use of underground works space characteristics, adopt anchor assembly and suspend in midair the roof beam and replace traditional beam column support system structure, the chamber engineering volume that significantly reduces with save steel volume, avoided the complicated construction of reserving the beam nest. The short span system of the whole suspension beam structure solves the problem that long beam column members are difficult to lay tissues from the ground to implement; the position adjustability is good, and the job site is convenient to adjust according to actual conditions.
In some embodiments, the infill 40 is a cementitious material poured between the chamber supports and the surrounding rock 10 and suspension beams 30. The filling body 40 formed by the cementing material is a fluid material, and when the filling body is used, the cementing material can be filled into the gap between the chamber support body and the surrounding rock 10 and the suspension beam 30, and the corresponding solid filling body 40 can be obtained after solidification, so that the stable connection of the chamber support body and the surrounding rock 10 and the suspension beam 30 is ensured. The cementing material has strong cementation property, and can further improve the connectivity of the underground chamber support body, the surrounding rock 10 and the suspension beam 30. In a specific example, the cementing material can be concrete, and a solid concrete block is formed after pouring, or can be formed by a fine-stone concrete material, so that the overall strength is higher. In other examples, the cementitious material may also be gypsum, again after casting to form a solid block of gypsum, thereby ensuring a secure connection of the chamber support and surrounding rock 10 to the suspension beams 30. Of course, the cementing material may be other materials, which are not limited thereto and will not be further described herein.
In some embodiments, the chamber support is at least one of an anchor-grid-shotcrete support, a poured concrete support, and a poured reinforced concrete support. These structures are common structures in the technical field of underground engineering construction, and are not described herein again.
In some embodiments, the suspension anchor 20 is at least one of a rod anchor and a steel strand anchor. These structures are common in the anchoring art and will not be described herein.
In some embodiments, the lifting beam 50 is connected to the suspension beam 30 by the connecting member 60, for example, the connecting member 60 is a bolt, which is simple in structure, low in cost, and stable in connection. But also can realize the detachability between the lifting beam 50 and the suspension beam 30, which is beneficial to the maintenance and the replacement of the lifting beam 50.
Alternatively, the lifting beam 50 is welded to the suspension beam 30. In this way, the lifting beam 50 is fixed to the suspension beam 30 and is not easily detached, so that the connection between the two is stronger and more stable.
In some embodiments, the suspension beam 30 and the lifting beam 50 are both horizontally disposed, so that the bottom of the suspension beam 30 can provide a horizontal installation surface, which is convenient for the installation and fixation of the lifting beam 50, and the horizontal arrangement of the lifting beam 50 is beneficial for connecting a load on the lifting beam 50, so as to provide a horizontal working surface or installation surface for the load. The lifting beam 50 is vertically or obliquely connected to the bottom of the suspension beam 30, for example, the lifting beam 50 is vertically connected to the bottom of the suspension beam 30, the structure is simple, and the connection is reliable. For another example, the lifting beam 50 is obliquely connected to the bottom of the suspension beam 30, the number of the lifting beams 50 may be multiple, and the multiple lifting beams 50 are obliquely connected to the bottom of the suspension beam 30, so that the connection structure has stronger stability and the connection between the two is more reliable.
In some embodiments, the suspension beams 30 are multiple and located at the same height, so that the bottoms of the multiple suspension beams 30 form a whole horizontal working surface or installation surface, which is beneficial for installing the lifting beam 50. The lifting beam 50 is connected to a plurality of suspension beams 30, the connection of the lifting beam 50 is more stable and the connection strength is higher by increasing the number of the suspension beams 30,
in some embodiments, the suspension beam 30 is a steel member, or a self-made member. That is, the suspension beam 30 may be a standard steel member, and is simple to manufacture and convenient to take. The suspension beam 30 may be a self-made member, so that it can be adapted to various use requirements, and is more practical and practical.
As shown in fig. 1, a specific embodiment of the present invention is described below.
A suspension beam structure 100 for underground works, adapted to be installed in a chamber, the suspension beam structure 100 comprising: the supporting body and surrounding rock 10 of the underground chamber, a plurality of suspension anchor rods 20, a suspension beam 30, a filling body 40 and a lifting beam 50.
The chamber support and the surrounding rock 10 are arranged on the inner wall of the chamber, a plurality of suspension anchors 20 are anchored on the chamber support and the surrounding rock 10, respectively, the suspension beam 30 is connected to the plurality of suspension anchors 20, the filling body 40 is filled between the chamber support and the surrounding rock 10 and the suspension beam 30 connected to the suspension anchors 20, and the lifting beam 50 is connected to the suspension beam 30. The filling body 40 is made of concrete, and is poured in a gap between the suspension beam 30 and the chamber support body and the surrounding rock 10, and after the concrete is solidified, a solid is formed and is adapted to the irregular top parts of the chamber support body and the surrounding rock 10 and the suspension beam 30, so that the bottom parts of the suspension beam 30 and the lifting beam 50 are ensured to be horizontal.
In addition, the lifting beam 50 is connected to the bottom of the suspension beam 30 by the connection member 60, and the connection member 60 is a bolt, and a plurality of bolts are spaced apart from each other on the lifting beam 50, thereby improving the connection strength between the lifting beam 50 and the suspension beam 30.
To sum up, the utility model discloses compensate traditional beam column support system to less load lifting beam's not enough, effectively rationally saved chamber span and height, have construction convenience, do benefit to control chamber country rock stable, save the engineering investment, the realizability is good, the reliable, the economic reasonable advantage of technique.
As shown in fig. 2, a construction method of a suspension beam structure according to an embodiment of the present invention to construct a suspension beam structure 100 of an underground construction as in any one of the above, the construction method comprising:
step S1: the anchoring area of the suspension beam structure 100 in the chamber is selected, and the specifications and the number of the suspension anchors 20, the suspension beams 30, and the lifting beams 50 are selected.
That is, before the suspension beam structure 100 is applied, the stability of the surrounding rock of the chamber and the properties of the surrounding rock of the local anchoring point should be known in detail; should suspend roof beam structure anchor point in midair and select in the good region of country rock nature, the utility model discloses all can adopt to the chamber that adopts anchor shotcrete to strut and pour concrete support.
The suspension beam anchoring point area is determined and established on the basis of the evaluation of the surrounding rock of the chamber, and the anchoring area is selected to be an area with good surrounding rock properties and no local weakness, so that the stability of the surrounding rock of the anchoring area is ensured.
And calculating and determining the loads of the suspension beam 30 and the anchoring points according to the load of the lifting beam and the storage safety coefficient required by the process, and selecting the specifications and the number of the suspension anchor rods 20 and the suspension beam 30 according to the calculated and determined loads.
Step S2: a plurality of suspension anchors 20 are anchored to the chamber support and surrounding rock 10 of the chamber. The construction of the suspension anchor rods 20 should be a reliable construction platform, and the construction is carried out according to the selected anchoring area and the designed anchoring parameters, so that the anchoring reliability of each suspension anchor rod 20 is ensured.
Step S3: the suspension beam 30 is fixedly coupled to the plurality of suspension anchors 20. In the process, after the suspension anchor rod 20 reaches the designed bearing capacity, the suspension beam 30 is connected and fixed; the measurement accuracy of the suspension beam 30 should be able to meet the installation requirements of the lifting beam 50.
Step S4: material is filled between the chamber supports and the surrounding rock 10 and the suspension beams 30 to form a filler 40. After the suspension beam 30 is installed, the construction of the filling body 40 is carried out, and the firm and reliable bonding of the filling body 40 and the top plate of the chamber is ensured; the filling body 40 may be made of fine aggregate concrete or other materials, but it is required to satisfy the strength and durability requirements.
Step S5: after the filling body 40 is completely solidified, the lifting beam 50 is installed and coupled to the suspension beam 30. It should be noted that, the installation accuracy must satisfy the installation requirement of the hoisting equipment.
In summary, the main implementation flow of the suspension beam structure 100 is as follows: determining the anchoring point of the suspension structure, calculating the beam load and the anchoring load, determining the type selection of the suspension anchor rod 20, the suspension beam 30 and the lifting beam 50, constructing the suspension anchor rod 20, fixedly constructing the suspension beam 30, pouring the filling body 40 and installing the lifting beam 50.
According to the utility model discloses suspension beam structure's construction method, the utility model has the advantages of it is following:
1. the stability of the underground engineering is in negative correlation with the span and the height of the chamber, and the larger the span of the chamber is, the larger the influence of the span on the stability of the chamber is; the utility model discloses can effectively rationally reduce chamber span and height.
2. The underground engineering space characteristics are fully utilized, the traditional beam-column supporting system structure is replaced by the suspension anchor rods 20 and the suspension beams 30, the chamber engineering quantity and the steel quantity are saved, and the complex construction of reserved beam pits is avoided.
3. The short span system of the suspended beam structure 100 avoids the difficulty of placing the long beam-column member from the ground to construct the structure.
4. The suspension beam structure 100 is installed after being adopted, the position adjustability is good, and the adjustment of a construction site is convenient according to actual conditions.
Other constructions of the suspension beam structure 100 according to the embodiment of the present invention, such as the chamber support and surrounding rock 10 and the suspension anchors 20, etc., and operations thereof are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. The utility model provides a suspension beam structure of underground works, is suitable for and installs in the chamber, its characterized in that suspension beam structure includes:
the chamber supporting body and the surrounding rock are arranged on the inner wall of the chamber;
the suspension anchor rods are respectively anchored on the chamber support body and the surrounding rock;
a suspension beam connected to the plurality of suspension anchors to be suspended in the chamber;
a filling body filled between the chamber support body and the surrounding rock and the suspension beam connected with the suspension anchor rod;
and the lifting beam is connected to the suspension beam.
2. The underground construction suspension beam structure of claim 1, wherein the filling body is a gel material poured between the chamber support body and the surrounding rock and the suspension beam.
3. A suspension beam structure for underground works according to claim 1, wherein the chamber support is at least one of an anchor net jet support, a cast concrete support and a cast reinforced concrete support.
4. A suspension beam structure for underground works according to claim 1, wherein the suspension anchor is at least one of a rod anchor and a steel strand anchor.
5. A suspension beam structure for underground construction according to claim 1, wherein the lifting beam is connected to the suspension beam by a connector, or the lifting beam is welded to the suspension beam.
6. A suspension beam structure for underground works according to claim 1, wherein the suspension beam and the lifting beam are horizontally disposed, and the lifting beam is vertically or obliquely connected to the bottom of the suspension beam.
7. A suspension beam structure for underground works according to claim 1, wherein the suspension beams are plural and located at the same height, and the lifting beam is connected to the plural suspension beams.
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| CN201921323248.6U CN210829395U (en) | 2019-08-14 | 2019-08-14 | Suspension beam structure of underground engineering |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454225A (en) * | 2019-08-14 | 2019-11-15 | 中国恩菲工程技术有限公司 | The hanger beam structure and construction method of underground engineering |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454225A (en) * | 2019-08-14 | 2019-11-15 | 中国恩菲工程技术有限公司 | The hanger beam structure and construction method of underground engineering |
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