CN106055782B - A kind of constructing tunnel escape capsule body limited strength member analog analysing method - Google Patents
A kind of constructing tunnel escape capsule body limited strength member analog analysing method Download PDFInfo
- Publication number
- CN106055782B CN106055782B CN201610365720.7A CN201610365720A CN106055782B CN 106055782 B CN106055782 B CN 106055782B CN 201610365720 A CN201610365720 A CN 201610365720A CN 106055782 B CN106055782 B CN 106055782B
- Authority
- CN
- China
- Prior art keywords
- cabin
- maximum
- stress
- steel
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Body Structure For Vehicles (AREA)
- Wind Motors (AREA)
Abstract
The invention belongs to constructing tunnels to rescue matching technology field, and disclose a kind of FEM Simulation method of constructing tunnel escape capsule body intensity, it includes the following steps: that (a) is modeled according to the actual size of escape capsule body, to obtain while include the cabin model including cabin main structure and keypoint part；(b) simulation calculation goes out to act on the load of cabin exterior surface area, and load is loaded on cabin model, and calculates the analog result of reflection survival capsule beam-column and plate shell；(c) analog result for reflecting hatch door, life-saving door and observation window in the survival capsule is calculated in simulation, and accordingly determines whether keypoint part occurs damage inactivation.The simulation and analysis of escape capsule body intensity under different operating conditions can be achieved in the present invention, has many advantages, such as that practical, analog result is reliable.
Description
Technical field
The invention belongs to underground engineering construction fields, have more particularly, to a kind of constructing tunnel escape capsule body intensity
Limit first analog analysing method.
Background technique
Modelling of Tunnel Excavation in Soft Rock Frequent Accidents in recent years cause equipment, personal casualty loss heavy, and social influence is very big.Root
It is found according to accident investigation after calamity, 70% weak surrounding rock, which collapses, to be occurred at face rear, after landslide occurs, face personnel's quilt
It is tired, due to rescuing not in time or landslide range slowly involves to face, easily cause trapped person injured or wrecked, therefore tunnel
Road construction survival capsule is widely used space and market value.
Constructing tunnel survival capsule can provide life support basic in the period after accident for the personnel of taking refuge, and effect is extremely heavy
It wants, therefore survival capsule itself needs the security reliability for having certain, extraneous certain load impulse force ability can be born.But it is directed at present
The data of constructing tunnel survival capsule is less, is more seldom related to the analysis verification method of constructing tunnel survival capsule intensity, and shortage is answered
To the design and manufacture guidance of constructing tunnel survival capsule and code requirement, it is not easy to underground engineering construction constructing tunnel life saving system
The marketization is promoted, and causes the qualified verifying standardization lead time of homologous series product longer.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of constructing tunnel escape capsule body is strong
The FEM Simulation method of degree, this method can carry out finite element analysis, knot for the special construction of constructing tunnel survival capsule
The application environment and design feature for closing survival capsule are modeled in detail, verify structural strength of the cabin in the case where setting load impacting with
Rigidity optimizes constructing tunnel survival capsule according to analysis verify data convenient for designer and tandem product pushes away
Extensively, the security reliability of section structure is improved.
To achieve the above object, it is proposed, according to the invention, provide a kind of constructing tunnel escape capsule body limited strength member simulation
Analysis method, which is characterized in that this method comprises the following steps:
(a) escape capsule body modeling procedure
It is selected as the survival capsule of sunykatuib analysis object, and the actual size according to escape capsule body is modeled, thus
Obtaining simultaneously includes cabin model including cabin main structure and keypoint part, wherein the main structure include beam column with
Plate shell, the keypoint part include hatch door, life-saving door and observation window；
(b) cabin LOAD FOR processing step
Based on step (a) cabin model obtained, in combination with preset landslide loading condition, corresponding simulation calculation goes out
Act on the load of cabin exterior surface area；Then, by this it is load simulated load on the cabin model, and simulate and be calculated
Reflect the analog result of survival capsule beam-column and plate shell after load, in which:
When the integral strength of cabin model is more than the strength degree of design, escape capsule body damage inactivation is directly determined；
And when the maximum distortion amount of deflection > 2% or deflection > 20mm of the plate shell described in the cabin model or the maximum of the beam column
When deformation deflection > 1% or deflection > 10mm, escape capsule body deformation failure is determined；
(c) cabin impact strength checks processing step
Equally by the load simulated keypoint part for loading on the cabin model, simulation, which is calculated, reflects the lifesaving
Analog result of these keypoint parts of hatch door, life-saving door and observation window after load in cabin, and accordingly determine these keypoint parts
Whether damage inactivation is occurred.
As it is further preferred that modeling process is preferably as follows for step (a):
Using the width direction of escape capsule body as X-axis, using the short transverse of escape capsule body as Y-axis, with escape capsule body
Length direction be Z axis, accordingly establish XYZ three-axis reference；Then, according to the practical ruler of the survival capsule on the coordinate system
Very little foundation reflects its integrally-built cabin model, and the condition that sets up frontiers.
As it is further preferred that preferably the entity beam column of cabin main structure is set as in above-mentioned modeling process
Hollow beam column is set as the shell unit in model, while plate shell being set as to the shell list in model by the solid element in model
Member, and integrally use structured grid.
As it is further preferred that the section of the solid element is preferably designed for every side grid >=2 rows, the shell unit
Size of mesh opening be preferably designed for 5 times not less than its thickness, while being not more than 20 times of its thickness.
As it is further preferred that the form of the analog result is preferably stress cloud for step (b) and (c)
Figure, strain cloud atlas and displacement cloud atlas.
As it is further preferred that it is also preferable to include following processing after step (c):
(d) structural strength comprehensive assessment step:
On the basis of the analog result of the entity beam column in cabin main structure, and combine the judgement in step (b) and (c)
Conclusion, statistics obtain the result of escape capsule structure type of impairment and the quantity that fails.
As it is further preferred that the load is preferably to be evenly distributed with dead load and shock loading, and wherein this is uniformly distributed quiet
Load includes that vertical load, vertical load add side horizontal loading and vertical load to add two sides horizontal loading.
As it is further preferred that the vertical load is to apply even distributed force in cabin top arc face, specially
0.38MPa, the side horizontal loading be cabin length direction one side apply even distributed force, specially 0.19MPa, described two
Side horizontal loading is to apply even distributed force, specially 0.19Mpa in cabin length direction two sides；The shock loading of stating is preferably
200KN, and act on the both ends of cabin or the 1 square meter area at intermediate position.
As it is further preferred that the entity beam column is for example reinforcing rib, wherein the reinforcing rib is preferably used such as lower section
Formula is arranged in the survival capsule as sunykatuib analysis object: the front/rear end inside the cabin is in horizontal and vertical mode
More angle steel are arranged as reinforcing rib, the left and right side horizontal homogeneous inside the cabin arranges more band steels as reinforcement
Muscle, the bottom surface inside the cabin are evenly arranged more band steels as reinforcing rib, in the cabin along cabin length direction
The top surface in portion is evenly arranged more T-steels as reinforcing rib along cabin length direction, is additionally provided on the longitudinal direction inside cabin
Multi-turn T-steel is uniformly distributed as reinforcing rib, the multi-turn T-steel along the length direction of the cabin.
As it is further preferred that being preferably included for the constructing tunnel survival capsule as sunykatuib analysis object
The cabin of body structure, the rectangular hatch door which is set, the emergency exits that the cabin left and right side is set, with
And the observation window in the rectangular hatch door is set.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect:
1. the present invention is modeled according to the practical structures size of cabin, the Whole structure model of escape capsule body is obtained,
And the load that cabin is born when by collapsing in numerical simulation tunnel, using the load as escape capsule structure intensive analysis
Load-up condition, intensity, the ability of rigidity and resistance to well-distributed pressure for determining entire section structure are calculated, to the strong of escape capsule body
Degree, reliability and impact resistance can be carried out theoretical validation, be remarkably improved such applied to underground engineering constructions lifesaving such as tunnels
Cabin structure design rationality and reliability shorten product convenient for the standardization, modularized design and the manufacturing of later period survival capsule
Design cycle and reduction experimentation cost, verification method is simple and effective, improves the design of similar constructing tunnel survival capsule series of products
And checkability, standard being formulated for industry, reference is provided, it is practical.
2. apply uniformly distributed dead load in the present invention, three kinds of typical conditions: vertical load operating condition, vertical load are considered respectively
The analysis of dead load is born with cabin under side horizontal loading operating condition, vertical load and two sides horizontal loading operating condition, load is with equal
Cloth power form is applied on section structure, can get accurately load data.
3. present invention analysis demonstrates ess-strain feelings of the cabin under uniformly distributed dead load and each typical condition of shock loading
Condition checks each structural stress level and distributed areas and deformation in detail, can be to structural strength or the ungratified position of rigidity
Structure is targetedly optimized and is reinforced, and is guaranteed that section structure has the strength and stiffness level under corresponding safety coefficient, is
The structure design of escape capsule body provides theoretical foundation and reference.
Detailed description of the invention
Fig. 1 is the flow chart of FEM Simulation method of the invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
Basic principle of the invention is on the basis of constructing tunnel survival capsule basic frame structure determines, to survival capsule knot
Structure carries out d solid modeling, such as CAD can be used etc. various common 3 d modeling softwares are modeled, and is rescued with Detailed simulation
Raw cabin cabin peripheral wall and inner frame aggregate structure；According to the actual conditions that tunnel construction site caves in, cabin is considered respectively
Ess-strain under uniformly distributed dead load and each typical condition of shock loading is horizontal, obtains the intensity results of escape capsule body, and
Horizontal each structural stress and distributed areas and deformation can be checked in detail, to the knot of structural strength or the ungratified position of rigidity
Structure targetedly can be optimized and be reinforced, so that the strength and stiffness of escape capsule body meet design requirement.
A kind of FEM Simulation method of constructing tunnel escape capsule body intensity provided in an embodiment of the present invention, master
Include the following steps:
(a) escape capsule body modeling procedure:
It is selected as the survival capsule of sunykatuib analysis object, and the actual size according to escape capsule body is modeled, can adopted
It is modeled with common modeling software, thus to obtain simultaneously including cabin mould including cabin main structure and keypoint part
Type, wherein the main structure includes beam column and plate shell, the keypoint part includes hatch door, life-saving door and observation window.
Specifically, the present invention exists as the survival capsule of sunykatuib analysis object its cabin for preferably including body structure, setting
The rectangular hatch door of the cabin front/rear end, the emergency exits that the cabin left and right side is set, and be arranged in the rectangular hatch door
In observation window, all hatch doors be it is outward opening, convenient for into cabin personnel open.Wherein, cabin material is Q345R, cabin length and width
Height is respectively 4.5m × 2.0m × 1.83m, and cabin top and bottom steel plate thickness is 8mm, and two sides and end face steel plate thickness are
4mm, top surface are arc-shaped (sagitta 0.25m), and impact resistance is more prominent.
The entity beam column is for example reinforcing rib, and wherein the reinforcing rib is preferably arranged in the following way as simulation point
In the survival capsule for analysing object: front/rear end inside the cabin arranges more angle steel as adding in horizontal and vertical mode
Strengthening tendons, the left and right side horizontal homogeneous inside the cabin arrange more band steels as reinforcing rib, specifically, can for example arrange
The band steel of three 80mm wide 6mm thickness, the bottom surface inside the cabin are evenly arranged more band steel conducts along cabin length direction
Reinforcing rib, specifically, for example arranging the band steel of four 80mm wide 6mm thickness, the top surface inside the cabin is along cabin length side
To more T-steels are evenly arranged as reinforcing rib, specifically for example it is four, multi-turn T is additionally provided on the longitudinal direction inside cabin
Fashioned iron is for example specifically 8 circles, which is uniformly distributed along the length direction of the cabin as reinforcing rib.Specifically, institute
It is for example 8mm that the web height for stating T-steel, which is for example 80mm, thickness, the wing plate width of T-steel be for example 80mm, thickness for example
For 8mm.Rectangular hatch door is having a size of 1400mm high × 600mm wide × R100mm (chamfer radius at four angles), door-plate thickness 8mm,
It is provided with size 800mm high × 600mm wide × R1000mm (chamfering at four angles half of the left and right hatch door of cabin left and right side
Diameter), door-plate thickness 8mm.The main performance index of cabin is as follows: elastic modulus E=1.96 × 105MPa, yield limit: in ring
At 20 DEG C of border temperature, σ=345Mpa, Poisson's ratio μ=0.3, density p=7850kg/m3.The present invention is according to the reality in constructing tunnel face
Border situation has fully considered strength and stability and requirement, the design master of reinforcing rib in the selection of cabin coverboard thickness
Consider that its modulus of section value matches with structure bearing strength, while reinforcing rib has certain cross-sectional area.
(b) cabin LOAD FOR processing step:
Based on step (a) cabin model obtained, in combination with preset various landslide loading conditions, corresponding emulation meter
Calculate and act on the load of cabin exterior surface area, wherein various landslide loading conditions according to the actual application environment of survival capsule into
Row setting；Then, it for example uses the loading method simulation loading of single side multizone in the cabin model load, and simulates
The analog result (specifically calculated and obtained by simulation softward) for reflecting the survival capsule beam-column and plate shell after load is calculated,
The maximum distortion degree of disturbing and deflection of the main intensity including cabin entirety, beam column and plate shell, in which:
When the integral strength of cabin model is more than strength degree (being set according to actual needs) of design, directly sentence
Determine escape capsule body damage inactivation；And work as the maximum distortion amount of deflection > 2% or deflection > 20mm of plate shell described in cabin model
When or the beam column maximum distortion amount of deflection > 1% or deflection > 10mm when, then determine escape capsule body deformation failure.
(c) cabin impact strength checks processing step:
Equally for example use the loading method simulation loading of single side multizone in the weight of the cabin model load
Point position, simulation, which is calculated, reflects mould of these keypoint parts of hatch door, life-saving door and observation window after load in the survival capsule
Intend as a result, simultaneously accordingly determining whether these keypoint parts occur damage inactivation.Specific decision procedure be judge hatch door, life-saving door and
Whether the respective intensity of these keypoint parts of observation window is more than the strength degree respectively designed, if being more than directly to determine these positions
Damage inactivation
In the present invention in above-mentioned modeling process, the entity beam column of cabin main structure is preferably set as the reality in model
Hollow beam column is set as the shell unit in model, while plate shell is set as the shell unit in model, and whole by body unit
Using structured grid.Specifically, the section of the solid element is preferably designed for every side grid >=2 rows, the shell unit
Size of mesh opening is preferably designed for 5 times not less than its thickness, while being not more than 20 times of its thickness.
Further, for step (a), modeling process is preferably as follows:
Using the width direction of escape capsule body as X-axis, using the short transverse of escape capsule body as Y-axis, with escape capsule body
Length direction be Z axis, accordingly establish XYZ three-axis reference；Then, according to the practical ruler of the survival capsule on the coordinate system
Very little foundation reflects its integrally-built cabin model, and the condition that sets up frontiers, and is set according to the actual situation, for example due to
After tunnel survival capsule is placed in the face of constructing tunnel, be fixed with angle steel, thus can according to the actual conditions in tunnel,
The base surface of cabin applies simple boundary condition.
And for step (b) and (c), the form of the analog result is preferably Stress Map, strain cloud atlas and position
Move cloud atlas.
As another embodiment, after step (c), it is also preferable to include following processing:
(d) structural strength comprehensive assessment step:
On the basis of the analog result of the entity beam column in cabin main structure, and combine the judgement in step (b) and (c)
Conclusion, statistics obtain the result of escape capsule structure type of impairment (such as damage inactivation, deformation failure) and the quantity that fails.
It mainly include uniformly distributed dead load and local shock loading, therefore of the invention since load derives from Tunnel collapse
In load mainly include uniformly distributed dead load and shock loading.Separately below for applying uniformly distributed dead load and shock loading,
Finite element modelling is carried out to cabin intensity, to obtain the analog result of escape capsule body intensity under different operating conditions.
1) apply uniformly distributed dead load
When applying uniformly distributed dead load, be divided into three kinds of operating conditions, be respectively vertical load, vertical load add side horizontal loading with
And vertical load adds two sides horizontal loading, vertical load refers specifically to apply even distributed force 0.38MPa in cabin top arc face, horizontal
Reduction coefficient is 0.5.Vertical load adds side horizontal loading to refer in cabin top arc face application even distributed force 0.38MPa, cabin
Length direction one side applies 0.19MPa even distributed force.Vertical load adds two sides horizontal loading to refer in the application of cabin top arc face
Even distributed force 0.38MPa, cabin length direction two sides apply even distributed force 0.19MPa.
1.1) operating condition 1: vertical load
Apply the vertical load that even distributed force is 0.38MPa in cabin top arc face, obtains analog result, the maximum of cabin
Strain is 10.753mm at the middle part of top plate, and the maximum strain of both side plate is 5.98mm, and the maximum distortion of entire model is
10.753mm, deflection are the 5.4 ‰ of cabin width.The maximum stress of cabin top plate, side plate and end plates be 221.72MPa <
[σ]；The maximum stress of reinforcing rib is the σ of 517.34MPa < 2, and the maximum stress of cabin is in top plate T-steel and connects with side plate T-shaped steel
Place is 665.16MPa.Stress caused by cabin shell is safe substantially within the scope of yield strength.Produced by T-steel
Stress there is the stress of a small amount of node to compare concentration, but not cause the destruction of shell.Therefore under this operating condition, structural strength and just
Degree is all satisfied requirement.
1.2) operating condition 2: vertical load adds side horizontal loading
Apply even distributed force 0.38MPa in cabin top arc face, it is uniformly distributed that cabin length direction one side applies 0.19MPa
Power, obtains analog result, and the maximum strain of 2 cabin of operating condition is 9.40mm, non-load bearing side plate is most at the middle part of top plate
Big strain is 2.0893mm, and the maximum strain of load bearing side plate is 7.3127mm, and the maximum strain of end plates is
1.045mm.The maximum deformation quantity of entire model is 9.40mm, and deflection is the 4.7 ‰ of cabin width.2 cabin top plate of operating condition
Maximum stress is 145.46MPa < [σ]；The maximum stress of side plate is 218.19MPa < [σ]；The maximum stress of end plates is
290.92MPa<[σ]；The maximum stress of reinforcing rib is the σ of 509.11MPa < 2, and the maximum stress of cabin is in top plate T-steel and side
Plate T-steel junction is 654.57MPa.Stress caused by the shell of 2 cabin of operating condition is within the scope of yield strength
Safety.There is the stress of a small amount of node to compare concentration, be more than yield strength, but not causes the destruction of shell.Therefore in this work
Under condition, structural strength and rigidity are all satisfied requirement.
1.3) operating condition 3: vertical load adds two sides horizontal loading
Apply even distributed force 0.38MPa in cabin top arc face, cabin length direction two sides apply even distributed force
0.19MPa obtains analog result.The maximum strain of 3 cabin of operating condition is 7.74mm at the middle part of both side plate, and the maximum of top plate is answered
Become 7.74mm, the maximum strain of both side plate is 3.44mm, and the maximum strain of end plates is 1.72mm.The maximum of entire model becomes
Shape is 7.74mm, and deflection is the 3.9 ‰ of cabin width.The maximum stress of 3 cabin top plate of operating condition is 200.50MPa < [σ]；Side
The maximum stress of plate is 133.66MPa < [σ]；The maximum stress of end plates is 66.832MPa < [σ]；The maximum stress of reinforcing rib
For 534.66MPa < σ, discontinuously locates at the maximum stress of cabin in the stress that top plate T-steel is connected with side plate T-shaped steel, be
601.49MPa.Stress caused by the shell of 3 cabin of operating condition is safe within the scope of yield strength.There is a small amount of node
Stress compare concentration, be more than yield strength, but not cause the destruction of shell.Therefore under this operating condition, structural strength and just
Degree is all satisfied requirement.
By the way that three kinds of loads of cabin are applied to, (vertical load, vertical load add side horizontal loading and vertical load to add
Two sides horizontal loading) cabin bears the analysis of dead load, cabin top plate, side plate and end plates and vertical, horizontal reinforcing rib under operating condition
Generated maximum stress is within the scope of the yield strength of material.The maximum distortion of cabin is 7.74mm, and deflection is cabin
The 3.9 ‰ of width.The maximum strain of cabin is at the middle part of both side plate.The maximum stress of cabin is in top plate T-steel and side plate T-shaped
Steel junction.There is a small amount of node stress concentration phenomenon occur, nominal stress has been more than material yield strength, but not causes shell
The destruction of body.Therefore, for cabin under three kinds of load cases, structural strength and rigidity are all satisfied requirement.
2) apply uniformly distributed dead load
Shock loading (concentrated force) is specially 200KN (every square meter 200kN), acts on the both ends or intermediate position of cabin
1 square meter area on (0.2MPa), the purpose of check is to examine cabin stability and safety.
2.1) front end applies the cabin strength check of shock loading
Shock loading is 200KN, is acted on the area of 1 square meter of cabin top nose position (0.2MPa)；It is simulated
As a result.Under the impact loading of front end, the maximum stress of cabin top plate is 32.987MPa < [σ]；The maximum of front console
Stress is 39.584MPa < [σ]；The maximum stress of reinforcing rib is 52.779MPa < [σ], and the maximum stress of cabin is in top plate T-type
Steel and side plate T-shaped steel junction, are 59.38Mpa, and the maximum displacement of cabin is 0.752mm.The shell and reinforcing rib of cabin are produced
Raw stress meets stability and security requirement within the scope of yield strength.
2.2) rear end applies the cabin strength check of shock loading
Shock loading is 200KN, acts on the area of 1 square meter of cabin top rear position (0.2MPa), is simulated
As a result, the maximum stress of cabin top plate is 30.48MPa < [σ] under the impact loading of rear end；The maximum of rear end panel is answered
Power is 36.576MPa < [σ]；The maximum stress of reinforcing rib is 42.672MPa < [σ], and the maximum stress of cabin is in top plate T-steel
It is 54.864MPa with side plate T-shaped steel junction.The maximum displacement of cabin is 0.65mm.Produced by the shell and reinforcing rib of cabin
Stress within the scope of yield strength, meet stability and security requirement.
2.3) intermediate position applies the cabin strength check of shock loading
Shock loading is 200KN, is acted on the area of 1 square meter of cabin top center position (0.2MPa), to obtain mould
Intend as a result, the maximum stress of cabin top plate is 52.81MPa < [σ] under the impact loading of middle part；The maximum stress of reinforcing rib
For 73.94MPa < [σ], the maximum stress of cabin is in top plate T-steel and side plate T-shaped steel junction, is 95.06MPa.Cabin
Maximum displacement is 1.24mm.Stress caused by the shell and reinforcing rib of cabin meets stability within the scope of yield strength
And security requirement.
After cabin overall structure meets intensity, rigidity requirement, using same method to survival capsule keypoint part, as door,
Observation window and other possible privileged sites for influencing cabin and using, do further strength check.When escape capsule body somewhere is tied
When structure intensity or rigidity are unsatisfactory for design requirement, structure at this is targetedly optimized and reinforced, such as increase thickness, is increased
If reinforcing rib etc., so that the strength and stiffness of escape capsule body are met the requirements.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of constructing tunnel escape capsule body limited strength member analog analysing method, which is characterized in that this method includes as follows
Step:
(a) escape capsule body modeling procedure
It is selected as the survival capsule of sunykatuib analysis object, and the actual size according to escape capsule body is modeled, thus to obtain
It simultaneously include the cabin model including cabin main structure and keypoint part, wherein the main structure includes beam column and plate
Shell, the keypoint part include the rectangular hatch door that cabin front/rear end is arranged in, the emergency exits that cabin left and right side is arranged in, with
And the observation window in rectangular hatch door is set, all hatch doors be it is outward opening, wherein cabin material be Q345R, cabin length, width and height
Respectively 4.5m × 2.0m × 1.83m, cabin top and bottom steel plate thickness are 8mm, and two sides and end face steel plate thickness are
4mm, top surface are the arc-shaped of sagitta 0.25m；The beam column is reinforcing rib, which is arranged in the following way as mould
In the survival capsule of quasi- analysis object: front/rear end inside cabin arranges more angle steel as adding in horizontal and vertical mode
Strengthening tendons, the left and right side horizontal homogeneous inside cabin arrange more band steels as reinforcing rib, and the bottom surface inside cabin is along cabin
Body length direction is evenly arranged more band steels as reinforcing rib, and the top surface inside cabin is evenly arranged more along cabin length direction
Root T-steel is as reinforcing rib, and the longitudinally positioned multi-turn T-steel inside cabin is as reinforcing rib, and the multi-turn T-steel is along cabin
Length direction be uniformly distributed；The band steel width is 80mm, with a thickness of 6mm, the web height of T-steel be 80mm, with a thickness of
The wing plate width of 8mm, T-steel are 80mm, with a thickness of 8mm；Rectangular hatch door is having a size of 1400mm high × 600mm wide, door-plate thickness
8mm；The size for being provided with the left and right emergency exits of cabin left and right side is 800mm high × 600mm wide, door-plate thickness 8mm；Cabin
Elastic modulus E=1.96 × 105MPa, at 20 DEG C of environment temperature, σ=345Mpa, Poisson's ratio μ=0.3, density p=
7850kg/m3；
(b) cabin LOAD FOR processing step
Based on step (a) cabin model obtained, in combination with preset landslide loading condition, corresponding simulation calculation goes out to act on
In the load of cabin exterior surface area, the load is uniformly distributed dead load and shock loading；Then, this load simulated is loaded on
The cabin model, and simulate to be calculated and reflect the analog result of survival capsule beam-column and plate shell after load, in which: when
When the integral strength of cabin model is more than the strength degree of design, escape capsule body damage inactivation is directly determined；And work as cabin mould
When the maximum distortion amount of deflection > 2% of plate shell described in type or when the maximum distortion amount of deflection > 1% of the beam column, lifesaving is determined
Cabin cabin deformation failure；
Wherein, be divided into three kinds of operating conditions when applying uniformly distributed dead load, be respectively vertical load, vertical load add side horizontal loading with
And vertical load adds two sides horizontal loading, vertical load, which refers to, applies even distributed force 0.38MPa, level reduction in cabin top arc face
Coefficient is 0.5；Vertical load adds side horizontal loading to refer in cabin top arc face application even distributed force 0.38MPa, cabin length
Direction one side applies 0.19MPa even distributed force；It is uniformly distributed in the application of cabin top arc face that vertical load adds two sides horizontal loading to refer to
Power 0.38MPa, cabin length direction two sides apply even distributed force 0.19MPa, specifically:
1.1) vertical load
Apply the vertical load that even distributed force is 0.38MPa in cabin top arc face, obtains analog result: the maximum strain of cabin
In the middle part 10.753mm of top plate, the maximum strain of both side plate is 5.98mm, and the maximum distortion of entire model is 10.753mm, is become
Shape amount is the 5.4 ‰ of cabin width, and the maximum stress of cabin top plate, side plate and end plates is 221.72MPa < [σ], reinforcing rib
Maximum stress is the σ of 517.34MPa < 2, and the maximum stress of cabin is in top plate T-steel and side plate T-shaped steel junction, is
665.16MPa；For stress caused by the shell of cabin within the scope of yield strength, stress caused by T-steel has a small amount of node
Stress compare concentration, but not cause the destruction of shell, therefore under this operating condition, structural strength and rigidity are all satisfied requirement；
1.2) vertical load adds side horizontal loading
Apply even distributed force 0.38MPa in cabin top arc face, cabin length direction one side applies 0.19MPa even distributed force, obtains
Obtain analog result: the maximum strain of cabin is 9.40mm at the middle part of top plate, and the maximum strain of non-load bearing side plate is
2.0893mm, the maximum strain of load bearing side plate are 7.3127mm, and the maximum strain of end plates is 1.045mm；Entire mould
The maximum deformation quantity of type is 9.40mm, and deflection is the 4.7 ‰ of cabin width；The maximum stress of cabin top plate be 145.46MPa <
[σ], the maximum stress of side plate are 218.19MPa < [σ], and the maximum stress of end plates is 290.92MPa < [σ], and reinforcing rib is most
Big stress is the σ of 509.11MPa < 2, and the maximum stress of cabin is in top plate T-steel and side plate T-shaped steel junction is 654.57MPa；
For stress caused by the shell of cabin within the scope of yield strength, having the stress of a small amount of node to compare concentration has been more than that surrender is strong
Degree, but not the destruction of shell is caused, therefore under this operating condition, structural strength and rigidity are all satisfied requirement；
1.3) vertical load adds two sides horizontal loading
Apply even distributed force 0.38MPa in cabin top arc face, cabin length direction two sides apply even distributed force 0.19MPa, obtain
Obtain analog result: the maximum strain of cabin is 7.74mm at the middle part of both side plate, and the maximum strain of top plate is 7.74mm, both side plate
Maximum strain be 3.44mm, the maximum strains of end plates is 1.72mm；The maximum distortion of entire model is 7.74mm, deflection
It is the 3.9 ‰ of cabin width；The maximum stress of cabin top plate is 200.50MPa < [σ], and the maximum stress of side plate is 133.66MPa
< [σ], the maximum stress of end plates are 66.832MPa < [σ], and the maximum stress of reinforcing rib is 534.66MPa < σ, the maximum of cabin
Discontinuously locate in the stress that top plate T-steel is connected with side plate T-shaped steel as 601.49MPa at stress；Caused by the shell of cabin
Stress has the stress of a small amount of node to compare concentration within the scope of yield strength, has been more than yield strength, but not cause shell
Destruction, therefore be all satisfied requirement in this operating condition flowering structure strength and stiffness；
The shock loading is 200KN, and is acted on the both ends of cabin or the 1 square meter area at intermediate position, specifically:
2.1) front end applies the cabin strength check of shock loading
Shock loading is 200KN, is acted on the area of 1 square meter of cabin top nose position, obtains analog result: in front end
Under impact loading, the maximum stress of cabin top plate is 32.987MPa < [σ], and the maximum stress of front console is
The maximum stress of 39.584MPa < [σ], reinforcing rib are 52.779MPa < [σ], and the maximum stress of cabin is in top plate T-steel and side
Plate T-steel junction is 59.38Mpa, and the maximum displacement of cabin is 0.752mm, is answered caused by the shell and reinforcing rib of cabin
Power meets stability and security requirement within the scope of yield strength；
2.2) rear end applies the cabin strength check of shock loading
Shock loading is 200KN, is acted on the area of 1 square meter of cabin top rear position, obtains analog result: in rear end
Under impact loading, the maximum stress of cabin top plate is 30.48MPa < [σ], and the maximum stress of rear end panel is 36.576MPa
< [σ], the maximum stress of reinforcing rib are 42.672MPa < [σ], and the maximum stress of cabin is in top plate T-steel and side plate T-shaped steel connects
Meeting place is 54.864MPa, and the maximum displacement of cabin is 0.65mm, and stress caused by the shell and reinforcing rib of cabin is being surrendered
In strength range, meet stability and security requirement；
2.3) intermediate position applies the cabin strength check of shock loading
Shock loading is 200KN, is acted on the area of 1 square meter of cabin top center position, to obtain analog result: at middle part
Under impact loading, the maximum stress of cabin top plate is 52.81MPa < [σ], the maximum stress of reinforcing rib be 73.94MPa <
[σ], it is 95.06MPa that the maximum stress of cabin, which is in top plate T-steel and side plate T-shaped steel junction, and the maximum displacement of cabin is
1.24mm, stress caused by the shell and reinforcing rib of cabin meet stability and safety are wanted within the scope of yield strength
It asks；
(c) cabin impact strength checks processing step
Equally by the load simulated keypoint part for loading on the cabin model, simulation, which is calculated, to be reflected in the survival capsule
Analog result of these keypoint parts of hatch door, life-saving door and observation window after load, and whether accordingly determine these keypoint parts
Damage inactivation occurs.
2. a kind of constructing tunnel escape capsule body limited strength member analog analysing method as described in claim 1, feature exist
In for step (a), modeling process is as follows:
Using the width direction of escape capsule body as X-axis, using the short transverse of escape capsule body as Y-axis, with the length of escape capsule body
Degree direction is Z axis, accordingly establishes XYZ three-axis reference；Then, the actual size on the coordinate system according to the survival capsule is built
It is vertical to reflect its integrally-built cabin model, and the condition that sets up frontiers.
3. a kind of constructing tunnel escape capsule body limited strength member analog analysing method as claimed in claim 2, feature exist
In the entity beam column of cabin main structure being set as the solid element in model, by hollow beam column in above-mentioned modeling process
The shell unit being set as in model, while plate shell is set as the shell unit in model, and integrally use structured grid.
4. a kind of constructing tunnel escape capsule body limited strength member analog analysing method as claimed in claim 3, feature exist
In the section of the solid element is designed as every side grid >=2 rows, and the size of mesh opening of the shell unit is designed as thick not less than it
5 times of degree, while no more than 20 times of its thickness.
5. a kind of constructing tunnel escape capsule body limited strength member sunykatuib analysis side as described in claim 1-4 any one
Method, which is characterized in that for step (b) and (c), the form of the analog result is Stress Map, strain cloud atlas and position
Move cloud atlas.
6. a kind of constructing tunnel escape capsule body limited strength member analog analysing method as described in claim 1, feature exist
In further including following processing after step (c):
(d) structural strength comprehensive assessment step:
On the basis of the analog result of the entity beam column in cabin main structure, and combine the judgement knot in step (b) and (c)
By statistics obtains the result of escape capsule structure type of impairment and the quantity that fails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610365720.7A CN106055782B (en) | 2016-05-27 | 2016-05-27 | A kind of constructing tunnel escape capsule body limited strength member analog analysing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610365720.7A CN106055782B (en) | 2016-05-27 | 2016-05-27 | A kind of constructing tunnel escape capsule body limited strength member analog analysing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106055782A CN106055782A (en) | 2016-10-26 |
| CN106055782B true CN106055782B (en) | 2019-08-30 |
Family
ID=57175541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610365720.7A Active CN106055782B (en) | 2016-05-27 | 2016-05-27 | A kind of constructing tunnel escape capsule body limited strength member analog analysing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106055782B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107145676B (en) * | 2017-05-19 | 2020-07-14 | 上海宇航系统工程研究所 | Structural layer type finite element simulation analysis method under complex load condition |
| CN112035963B (en) * | 2020-09-10 | 2023-08-04 | 中国航空工业集团公司沈阳飞机设计研究所 | Cabin door structure design method |
| CN115356215A (en) * | 2022-08-17 | 2022-11-18 | 四川汉舟电气股份有限公司 | Method, device, equipment and storage medium for measuring strength of underframe of electric power cabin |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061801A (en) * | 2013-01-27 | 2013-04-24 | 江苏拉艾夫矿山设备有限公司 | Mining downhole arc-shaped anti-detonation rescue capsule |
| CN105019938A (en) * | 2015-08-11 | 2015-11-04 | 太仓市高泰机械有限公司 | High-anti-knock mine long-span escape capsule |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8007047B2 (en) * | 2006-02-27 | 2011-08-30 | Kennedy Metal Products & Buildings, Inc. | Mine refuge |
| CN103419915A (en) * | 2013-08-15 | 2013-12-04 | 青岛远创机器人自动化有限公司 | Underwater robot device for shallow water observation |
| CN103758563A (en) * | 2014-02-24 | 2014-04-30 | 浙江杭钻机械制造股份有限公司 | Closed-loop type mine-used lifesaving cabin body |
-
2016
- 2016-05-27 CN CN201610365720.7A patent/CN106055782B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061801A (en) * | 2013-01-27 | 2013-04-24 | 江苏拉艾夫矿山设备有限公司 | Mining downhole arc-shaped anti-detonation rescue capsule |
| CN105019938A (en) * | 2015-08-11 | 2015-11-04 | 太仓市高泰机械有限公司 | High-anti-knock mine long-span escape capsule |
Non-Patent Citations (5)
| Title |
|---|
| 井下瓦斯爆炸特性及救生舱舱体优化研究;赵焕娟;《中国博士学位论文全文数据库 工程科技Ⅰ辑》;20160229;正文第1.4-1.5节,3.3-3.5节,4.4.1节,6.2节、图3.5,表5.1 |
| 井下瓦斯爆炸特性及救生舱舱体优化研究;赵焕娟;《中国博士学位论文全文数据库 工程科技Ⅰ辑》;20160229;正文第1.4节,3.3-3.5节、图3.5,表5.1 |
| 救生舱板壳结构抗冲击结构安全分析及优化对策;赵焕娟 等;《煤炭学报》;20130630;第38卷(第6期);第1095-1099页 |
| 矿用可移式救生舱舱体结构设计及强度分析研究;顾玉明;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》;20140531(第5期);第B021-205页 |
| 矿用救生舱曲线式加强筋板的设计与优化;千红涛 等;《煤炭学报》;20130930;第38卷;摘要，正文第3节 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106055782A (en) | 2016-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106055782B (en) | A kind of constructing tunnel escape capsule body limited strength member analog analysing method | |
| Najjar et al. | A nonlinear analysis for three-dimensional steel frames in fire conditions | |
| Symonds et al. | Recent progress in the plastic methods of structural analysis | |
| Sadique et al. | Nuclear containment structure subjected to commercial and fighter aircraft crash | |
| Veenendaal et al. | 35 Computational form-finding of fabric formworks: an overview and discussion | |
| Maske et al. | Torsional behaviour of asymmetrical buildings | |
| Sharapov et al. | The effect of story drift in a multi-story building under the influence of an earthquake | |
| Iqbal et al. | Damage assessment of nuclear containment against aircraft crash | |
| Chanthamanivong et al. | Smart design of coupling scissors-type bridge | |
| Ackroyd et al. | Strength of flexibly connected steel frames | |
| Lim et al. | Effects of elevated temperatures on bolted moment-connections between cold-formed steel members | |
| Mulas | A structural model for panel zones in non linear seismic analysis of steel moment-resisting frames | |
| Dundulis et al. | Structural integrity analysis of an Ignalina nuclear power plant building subjected to an airplane crash | |
| CN109145357A (en) | Method for analyzing influence of uneven settlement on upper frame structure | |
| Potapov | The elastoplastic calculation of frames using the displacement method | |
| Hosseini et al. | Comparing the nonlinear behaviors of steel and concrete link beams in coupled shear walls system by finite element analysis | |
| Couto et al. | Verification of web tapered beam-columns in case of fire using the general method of Eurocode 3 | |
| Ansari et al. | Design and analysis of crane hook for load conditions | |
| Marabi et al. | A Numerical and analytical study on optimization and efficiency of structural forms by two-outrigger in tall buildings | |
| Shang et al. | Seismic vulnerability analysis of reinforced concrete frame structures built in different times | |
| Ma et al. | Nonlinear seismic response analysis of half through CFST arch bridge under 3-D earthquake waves | |
| Hoschke et al. | A multimodal approach for automation of mechanical design | |
| Block et al. | Efficient structural design of reconfigurable spatial structures by adopting aerodynamic shapes | |
| Li et al. | Deployable cable-chain structures: morphology, structural response and robustness study | |
| Eisa | A study on the strengthening of buildings by utilizing viscous dampers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |