Calculation method and system for temporary stay wire ground anchor resistance of rock foundation

Abstract

The invention provides a method and a system for calculating resistance of a temporary stay wire ground anchor of a rock foundation. The method comprises the following steps: acquiring the anchor pile diameter, anchor pile depth and anchor bar diameter of an anchor foundation of an undisturbed soil rock foundation, mechanical parameters of the rock foundation, and mechanical parameters of concrete and steel bars of the ground anchor foundation; calculating the design value of the bearing capacity of the anchor bar, calculating the design value of the bonding bearing capacity between the steel bar and the concrete, and calculating the ultimate bonding bearing capacity between the anchor pile and the rock; calculating the ultimate shear bearing capacity of the rock; according to the ultimate bond bearing capacity and the rock shear ultimate bearing capacity, a rock anchor rod foundation uplift bearing capacity safety coefficient is introduced, and a bond bearing capacity design value between an anchor pile and rock and a rock shear bearing capacity design value are calculated; and the resistance of the anchor foundation of the rock ground base is determined by integrating the design values of the bearing capacities. According to the method, accurate calculation of the anchor resistance of the rock foundation can be achieved, and rapid construction of the anchor foundation of the rock foundation is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of temporary guy wire anchors, and in particular relates to a calculation method and system for the resistance of a temporary guy wire anchor in a rock foundation. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] At present, in the construction of overhead transmission line, reinforced concrete cable tray is mainly used as the temporary cable tray foundation, but the foundation of the temporary cable tray needs to be excavated. The depth of the temporary cable tray foundation pit is generally about 3m. In the case of soil foundation, the excavation of the foundation pit is relatively simple. When the area where the cable tray foundation is located is a rock foundation, the excavation of a rock foundation pit of about 3m is low in construction efficiency and long in construction period. In the case of such rock foundation, exploring a new anchor foundation form and resistance calculation method has become an urgent problem to be solved. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a calculation method and system for the resistance of a temporary wire anchor in a rock foundation. The present invention can realize accurate calculation of the resistance of the anchor in the rock foundation and rapid construction of the anchor foundation in the rock foundation.

[0005] According to some embodiments, the present invention adopts the following technical solutions:

[0006] A method for calculating the resistance of a temporary anchor wire in a rock foundation comprises the following steps:

[0007] Obtain the anchor pile diameter, anchor pile depth, anchor bar diameter, mechanical parameters of rock foundation, and mechanical parameters of concrete and steel bars of the anchor foundation of the original soil and rock foundation;

[0008] Calculate the design value of anchor bar bearing capacity based on anchor bar diameter and steel bar mechanical parameters;

[0009] Calculate the design value of the bond bearing capacity between the steel bar and concrete based on the anchor pile diameter, anchor pile depth and mechanical parameters of concrete;

[0010] According to the diameter of the anchor pile, the depth of the anchor pile and the mechanical parameters of the rock foundation, the ultimate bond bearing capacity between the anchor pile and the rock is calculated;

[0011] According to the anchor pile depth and the mechanical parameters of the rock foundation, the ultimate shear bearing capacity of the rock is calculated;

[0012] According to the ultimate bonding bearing capacity and the ultimate shear bearing capacity of the rock, a safety factor of the pull-out bearing capacity of the rock anchor is introduced to calculate the design value of the bonding bearing capacity between the anchor pile and the rock and the design value of the shear bearing capacity of the rock;

[0013] The resistance of the anchor foundation on rock foundation is determined by comprehensively considering the design value of the bond bearing capacity between the anchor pile and rock, the design value of the rock shear bearing capacity, the design value of the bond bearing capacity between the steel bar and concrete, and the ultimate bond bearing capacity between the anchor pile and rock.

[0014] As an optional implementation, the process of calculating the design value of the anchor bar bearing capacity based on the anchor bar diameter and the steel bar mechanical parameters includes: Ry=π*(d / 2)2*fy, fy is the design value of the anchor bar tensile strength in the steel bar mechanical parameters, and d is the anchor bar diameter.

[0015] As an optional implementation, the process of calculating the design value of the bond bearing capacity between the steel bar and the concrete according to the anchor pile diameter, the anchor pile depth and the mechanical parameters of the concrete includes:

[0016] R a =π*d*L*τ a

[0017] Where L is the length of the anchor pile, d is the diameter of the anchor bar, τ a It is the design value of the bond strength between the anchor bar and the anchor pile concrete.

[0018] As an optional implementation, the process of calculating the ultimate bonding bearing capacity between the anchor pile and the rock according to the anchor pile diameter, the anchor pile depth and the mechanical parameters of the rock foundation includes:

[0019] R b =π*D*L*τ b

[0020] Where D is the anchor pile diameter, L is the anchor pile length, τ b It is the standard value of the ultimate bond strength between the anchor pile and the rock.

[0021] As an optional implementation, the process of calculating the ultimate shear bearing capacity of rock according to the anchor pile depth and the mechanical parameters of the rock foundation includes:

[0022] R s =π*(L*cos(θ)*sin(45) / sin(135-θ))

[0023] *τ s *(D+L*cos(θ)*sin(45)*tan(θ) / sin(135-θ))

[0024] Among them, τs is the standard value of the ultimate shear strength of rock, θ is the rock shear angle, D is the anchor pile diameter, and L is the anchor pile length.

[0025] As an optional implementation, based on the ultimate bonding bearing capacity and the ultimate shear bearing capacity of rock, the pull-out bearing capacity safety factor of the rock anchor foundation is introduced to calculate the design value R of the bonding bearing capacity between the anchor pile and the rock. bs and the design value of rock shear bearing capacity R ss The process includes:

[0026] R bs =R b / K;

[0027] R ss =R s / K;

[0028] Where K is the safety factor of the pull-out bearing capacity of the rock anchor foundation;

[0029] As an optional implementation method, the design value of the bond bearing capacity between the anchor pile and the rock, the design value of the rock shear bearing capacity, the design value of the bond bearing capacity between the steel bar and the concrete, and the ultimate bond bearing capacity between the anchor pile and the rock are comprehensively considered, and the minimum value among them is taken as the resistance of the rock foundation anchor foundation.

[0030] A calculation system for the resistance of a temporary anchor wire in a rock foundation, comprising:

[0031] A data acquisition module is configured to acquire the anchor pile diameter, anchor pile depth, anchor bar diameter, mechanical parameters of the rock foundation, and mechanical parameters of concrete and steel bars of the anchor foundation of the original soil and rock foundation;

[0032] The first calculation module is configured to calculate the design value of the anchor bar bearing capacity according to the anchor bar diameter and the steel bar mechanical parameters;

[0033] The second calculation module is configured to calculate a design value of the bond bearing capacity between the steel bar and the concrete according to the anchor pile diameter, the anchor pile depth and the mechanical parameters of the concrete;

[0034] A third calculation module is configured to calculate the ultimate bonding bearing capacity between the anchor pile and the rock according to the anchor pile diameter, the anchor pile depth and the mechanical parameters of the rock foundation;

[0035] a fourth calculation module, configured to calculate the ultimate shear bearing capacity of the rock according to the anchor pile depth and the mechanical parameters of the rock foundation;

[0036] A fifth calculation module is configured to introduce a pull-out bearing capacity safety factor on the rock anchor foundation according to the ultimate bonding bearing capacity and the rock shear bearing capacity, and calculate a design value of the bonding bearing capacity between the anchor pile and the rock and a design value of the rock shear bearing capacity;

[0037] The comprehensive calculation module is configured to comprehensively consider the design value of the bond bearing capacity between the anchor pile and the rock, the design value of the rock shear bearing capacity, the design value of the bond bearing capacity between the steel bar and the concrete, and the ultimate bond bearing capacity between the anchor pile and the rock to determine the resistance of the anchor foundation on the rock foundation.

[0038] A computer-readable storage medium is used to store computer instructions, and when the computer instructions are executed by a processor, the steps in the above method are completed.

[0039] An electronic device comprises a memory and a processor, and computer instructions stored in the memory and executed on the processor. When the computer instructions are executed by the processor, the steps in the above method are completed.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] The present invention realizes the accurate calculation of the resistance of the anchor foundation of the original soil and rock foundation, and realizes the integrated design and control of the anchor foundation of the original soil and rock foundation.

[0042] The invention realizes the rapid calculation of the resistance of the anchor foundation in the original soil and rock foundation, improves the calculation efficiency, and at the same time improves the construction efficiency of the anchor foundation in the rock foundation area, protecting the ecological environment.

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0045] Figure 1 The present invention is a schematic diagram of an original soil and rock foundation anchor foundation provided by an embodiment. DETAILED DESCRIPTION

[0046] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0047] It should be noted that the following detailed descriptions are all illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0048] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0049] In the absence of conflict, the embodiments in this application and the features in the embodiments may be combined with each other.

[0050] Embodiment 1:

[0051] like Figure 1 As shown, the original soil and rock foundation anchor foundation includes three parts: anchor bar 1, anchor pile 2, and rock foundation 3. The anchor bar 1 is a ribbed steel bar, the anchor pile 2 is cast with fine stone concrete, and the anchor bar 1 is connected to the foundation through the fine stone concrete in the anchor pile 2.

[0052] A method for calculating the resistance of anchor foundation on undisturbed soil and rock foundation, the specific process is as follows:

[0053] S1: The design value of anchor bar bearing capacity R is obtained based on anchor bar diameter and anchor bar mechanical parameters. y ;

[0054] R y =π*(d / 2) 2 *f y

[0055] In the above formula: f y is the design value of anchor bar tensile strength, and d is the anchor bar diameter.

[0056] S2: According to the anchor pile diameter, anchor pile depth, and mechanical parameters of concrete, the design value of the bond bearing capacity between the steel bar and the anchor pile concrete is obtained. a ;

[0057] R a =π*d*L*τ a

[0058] In the above formula: L is the length of the anchor pile, τ a The weld is the design value of the bond strength between the anchor bar and the anchor pile concrete.

[0059] S3: According to the anchor pile diameter, anchor pile depth and rock mechanical parameters, the ultimate bonding bearing capacity between the anchor pile and the rock is obtained.

[0060] R b =π*D*L*τ b

[0061] In the above formula: D is the diameter of the anchor pile, τb It is the standard value of the ultimate bond strength between the anchor pile and the rock.

[0062] S4: According to the anchor pile depth and rock mechanical parameters, the ultimate shear bearing capacity of the rock is obtained.

[0063] R s =π*(L*cos(θ)*sin(45) / sin(135-θ))

[0064] *τ s *(D+L*cos(θ)*sin(45)*tan(θ) / sin(135-θ))

[0065] In the above formula: τs is the standard value of the ultimate shear strength of rock, and θ is the shear angle of rock.

[0066] S5: According to the safety factor of the pull-out bearing capacity of the rock anchor foundation, the design value of the bond bearing capacity between the anchor pile and the rock and the design value of the rock shear bearing capacity are obtained using the following formula:

[0067] R bs =R b / K

[0068] R ss =R s / K

[0069] In the above formula: K is the safety factor of the pull-out bearing capacity of the rock anchor foundation;

[0070] S6: The resistance of the anchor foundation on rock foundation is obtained by taking the minimum value based on the design value of anchor bar bearing capacity, the design value of bond bearing capacity between steel bar and anchor pile concrete, the design value of bond bearing capacity between anchor pile and rock, and the design value of rock shear bearing capacity.

[0071] R=min(R y , R a , R bs , R ss )

[0072] Embodiment 2:

[0073] A system for calculating the resistance of anchor foundations in original soil and rock foundation, comprising:

[0074] A calculation system for the resistance of a temporary anchor wire in a rock foundation, comprising:

[0075] A data acquisition module is configured to acquire the anchor pile diameter, anchor pile depth, anchor bar diameter, mechanical parameters of the rock foundation, and mechanical parameters of concrete and steel bars of the anchor foundation of the original soil and rock foundation;

[0076] The first calculation module is configured to calculate the design value of the anchor bar bearing capacity according to the anchor bar diameter and the steel bar mechanical parameters;

[0077] The second calculation module is configured to calculate a design value of the bond bearing capacity between the steel bar and the concrete according to the anchor pile diameter, the anchor pile depth and the mechanical parameters of the concrete;

[0078] A third calculation module is configured to calculate the ultimate bonding bearing capacity between the anchor pile and the rock according to the anchor pile diameter, the anchor pile depth and the mechanical parameters of the rock foundation;

[0079] a fourth calculation module, configured to calculate the ultimate shear bearing capacity of the rock according to the anchor pile depth and the mechanical parameters of the rock foundation;

[0080] A fifth calculation module is configured to introduce a pull-out bearing capacity safety factor of the rock anchor foundation according to the ultimate bonding bearing capacity and the rock shear bearing capacity, and calculate a design value of the bonding bearing capacity between the anchor pile and the rock and a design value of the rock shear bearing capacity;

[0081] The comprehensive calculation module is configured to comprehensively consider the design value of the bond bearing capacity between the anchor pile and the rock, the design value of the rock shear bearing capacity, the design value of the bond bearing capacity between the steel bar and the concrete, and the ultimate bond bearing capacity between the anchor pile and the rock to determine the resistance of the anchor foundation on the rock foundation.

[0082] Embodiment 3:

[0083] A computer-readable storage medium having a program stored thereon, characterized in that when the program is executed by a processor, the steps in the method for calculating the resistance of an anchor foundation in an original soil and rock foundation as described in Example 1 of the present disclosure are implemented.

[0084] Embodiment 4:

[0085] An electronic device comprises a memory, a processor and a program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps in the method for calculating the resistance of an anchor foundation in an original soil and rock foundation as described in Example 1 of the present disclosure are implemented.

[0086] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0087] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0088] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0089] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0090] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made by those skilled in the art within the spirit and principle of the present invention without creative labor shall be included in the protection scope of the present invention.

Claims

1. A method for calculating the resistance of a temporary anchor wire in a rock foundation, characterized in that: The following steps are involved: Obtain the anchor pile diameter, anchor pile depth, anchor bar diameter, mechanical parameters of rock foundation, and mechanical parameters of concrete and steel bars of the anchor foundation of the original soil and rock foundation; Calculate the design value of anchor bar bearing capacity based on anchor bar diameter and steel bar mechanical parameters; Calculate the design value of the bond bearing capacity between the steel bar and concrete based on the anchor pile diameter, anchor pile depth and mechanical parameters of concrete; According to the diameter of the anchor pile, the depth of the anchor pile and the mechanical parameters of the rock foundation, the ultimate bond bearing capacity between the anchor pile and the rock is calculated; According to the anchor pile depth and the mechanical parameters of the rock foundation, the ultimate shear bearing capacity of the rock is calculated; According to the ultimate bonding bearing capacity and the ultimate shear bearing capacity of the rock, a safety factor of the pull-out bearing capacity of the rock anchor is introduced to calculate the design value of the bonding bearing capacity between the anchor pile and the rock and the design value of the shear bearing capacity of the rock; The resistance of the anchor foundation on rock foundation is determined by comprehensively considering the design value of the bond bearing capacity between the anchor pile and rock, the design value of the rock shear bearing capacity, the design value of the bond bearing capacity between the steel bar and concrete, and the ultimate bond bearing capacity between the anchor pile and rock.

2. A method for calculating the resistance of a temporary anchor wire in a rock foundation as claimed in claim 1, characterized in that: According to the anchor bar diameter and the steel bar mechanical parameters, the process of calculating the design value of the anchor bar bearing capacity includes: Ry = π*(d / 2)2*fy, fy is the design value of the anchor bar tensile strength in the steel bar mechanical parameters, and d is the anchor bar diameter.

3. The method for calculating the resistance of a temporary anchor wire in a rock foundation as claimed in claim 1, characterized in that: The process of calculating the design value of the bond bearing capacity between the steel bar and concrete based on the anchor pile diameter, anchor pile depth and mechanical parameters of the concrete includes: R a =π*d*L*τ a Where L is the length of the anchor pile, d is the diameter of the anchor bar, τ a It is the design value of the bond strength between the anchor bar and the anchor pile concrete.

4. A method for calculating the resistance of a temporary anchor wire in a rock foundation as claimed in claim 1, characterized in that: Based on the anchor pile diameter, anchor pile depth and mechanical parameters of the rock foundation, the process of calculating the ultimate bond bearing capacity between the anchor pile and the rock includes: R b =π*D*L*τ b Where D is the anchor pile diameter, L is the anchor pile length, τ b It is the standard value of the ultimate bond strength between the anchor pile and the rock.

5. The method for calculating the resistance of a temporary anchor wire in a rock foundation as claimed in claim 1, characterized in that: Based on the anchor depth and mechanical parameters of the rock foundation, the process of calculating the ultimate shear bearing capacity of the rock includes; R s =π*(L*cos(θ)*sin(45) / sin(135-θ)) *t s *(D+L*cos(θ)*sin(45)*tan(θ) / sin(135-θ)) Among them, τs is the standard value of the ultimate shear strength of rock, θ is the rock shear angle, D is the anchor pile diameter, and L is the anchor pile length.

6. A method for calculating the resistance of a temporary anchor wire in a rock foundation as claimed in claim 1, characterized in that: According to the ultimate bonding bearing capacity and the ultimate shear bearing capacity of rock, the pull-out bearing capacity safety factor of rock anchor foundation is introduced to calculate the design value R of the bonding bearing capacity between the anchor pile and the rock. bs and the design value of rock shear bearing capacity R ss The process include: R bs =R b / K; R ss =R s / K; Among them, K is the safety factor of the pull-out bearing capacity of the rock anchor foundation.

7. The method for calculating the resistance of a temporary anchor wire in a rock foundation as claimed in claim 1 is characterized in that: The design value of the bond bearing capacity between the anchor pile and the rock, the design value of the rock shear bearing capacity, the design value of the bond bearing capacity between the steel bar and the concrete, and the ultimate bond bearing capacity between the anchor pile and the rock, the minimum of these values ​​is taken as the resistance of the anchor foundation on rock foundation.

8. A calculation system for the resistance of temporary anchor wires in rock foundations, characterized by comprising: A data acquisition module is configured to acquire the anchor pile diameter, anchor pile depth, anchor bar diameter, mechanical parameters of the rock foundation, and mechanical parameters of concrete and steel bars of the anchor foundation of the original soil and rock foundation; The first calculation module is configured to calculate the design value of the anchor bar bearing capacity according to the anchor bar diameter and the steel bar mechanical parameters; The second calculation module is configured to calculate a design value of the bond bearing capacity between the steel bar and the concrete according to the anchor pile diameter, the anchor pile depth and the mechanical parameters of the concrete; A third calculation module is configured to calculate the ultimate bonding bearing capacity between the anchor pile and the rock according to the anchor pile diameter, the anchor pile depth and the mechanical parameters of the rock foundation; a fourth calculation module, configured to calculate the ultimate shear bearing capacity of the rock according to the anchor pile depth and the mechanical parameters of the rock foundation; A fifth calculation module is configured to introduce a pull-out bearing capacity safety factor on the rock anchor foundation according to the ultimate bonding bearing capacity and the rock shear bearing capacity, and calculate a design value of the bonding bearing capacity between the anchor pile and the rock and a design value of the rock shear bearing capacity; The comprehensive calculation module is configured to comprehensively consider the design value of the bond bearing capacity between the anchor pile and the rock, the design value of the rock shear bearing capacity, the design value of the bond bearing capacity between the steel bar and the concrete, and the ultimate bond bearing capacity between the anchor pile and the rock to determine the resistance of the anchor foundation on the rock foundation.

9. A computer-readable storage medium, characterized in that: Used to store computer instructions, which, when executed by a processor, complete the steps of the method according to any one of claims 1 to 7.

10. An electronic device, characterized in that: The method comprises a memory and a processor, and computer instructions stored in the memory and executed on the processor, wherein when the computer instructions are executed by the processor, the steps in the method according to any one of claims 1 to 7 are completed.

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