CN108755783A - A kind of density gradient earthquake-resistant building structure - Google Patents
A kind of density gradient earthquake-resistant building structure Download PDFInfo
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- CN108755783A CN108755783A CN201810842545.5A CN201810842545A CN108755783A CN 108755783 A CN108755783 A CN 108755783A CN 201810842545 A CN201810842545 A CN 201810842545A CN 108755783 A CN108755783 A CN 108755783A
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- density
- density gradient
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- earthquake
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
Abstract
The present invention relates to a kind of density gradient earthquake-resistant building structures, belong to building structure aseismatic field of engineering technology.Including having excavated ground, anchor pole, being fixed on the density gradient material on building slope and on the intrinsic basic plane of ground by anchor pole, the corner of the density gradient material is to bond, weld or be bolted.The group of the density gradient material becomes nonmetallic-nonmetallic, nonmetallic-metal or metal-metal；The density gradient material includes at least four I grade of density material, II grade of density material, III grade of density material and IV grade of density material grades.The present invention directly implements antidetonation protection in building structure building slope and the intrinsic basis of ground, avoid the cumbersome technique that anti-seismic material is added in building structure, the consumption of anti-seismic material is reduced, does not change building structure own wt, is conducive to the safety for improving building structure entirety.
Description
Technical field
The present invention relates to a kind of density gradient earthquake-resistant building structures, belong to building structure aseismatic field of engineering technology.
Background technology
China is that one of more earthquake countries, about 70% big and medium-sized cities are located at 7 grades or more earthquake territories, seismic activity in the world
It is mainly distributed on 5 regional 23 earthquake zones.Therefore, a kind of safe and efficient building structure aseismatic reinforcing side how is found
Method has extremely important effect in quake evaluation.Currently, reinforcing building aseismicity ability mainly has three big methods：(1) antidetonation
It reinforces, resists earthquake using measures such as the bearing capacity of each component of enhancing structure, deformability, globality and improvement force paths and make
With absorption seismic energy.This method includes：1. the component added strengthening member method, but added can increase the weight of structure entirety；
2. carbon fiber/reinforcement by sticking of sheets is a kind of very promising reinforcement means, but current this method is in application process, carbon fiber
The bonding process of dimension/steel bonding sheet material and component cannot still meet commercial Application with horizontal；3. reinforced with external steel encased is generally used for
The reinforcing of beam, column, longspan structure, it is easy for construction, but steel using amount is big, it is high to reinforce maintenance cost, increases structure overall weight；④
One-piece casting method for strengthening is generally used for the repairing in fault of construction or crack；5. enlarging section area-method, by increasing structural section
Area achievees the purpose that improve element bearing capacity, but site workload is big, reduces structure and space can be used, increase construction weight；
6. rebar-planting anchorage technique, integral by reinforcing bar and surrounding concrete bonding, increase the anti-seismic performance of structure, be mainly used in side
Slope, surrounding rock stability are reinforced, and are influenced by structure width in general building structure, it is difficult to are applied in engineering construction structure.
(2) energy dissipation component is arranged in structure lateral resistant member in damping reinforcement, by its local deformation provide additional damping to dissipate or
It absorbs by the energy in Seismic input structure, reduces agent structure earthquake response, mainly include and add friction damper, gold
The entirety of structure will not be changed by belonging to techniques, this method such as damper, viscoelastic type damper, Viscous fluid damper, force arm type dual damping
Property, the relative storey displacement under shock effect can be made to reduce 40%~60%, damping ratio increases by 100~300%, but only due to this method
It is the direct or indirect influence for absorbing vibrations to structure, can not fundamentally changes coup injury of the vibrations to structure.(3) every
Shake is reinforced, and between building superstructure and basis and Seismic Isolation of Isolation Layer is arranged in top-out interlayer, and isolation seismic energy is upward
Portion structure is transmitted, to reduce the geological process of superstructure, mainly include add rubber bearing, add slip support abutment,
The techniques such as the IAU shock isolation systems of roller bearing are added, but is not preferably greater than 4 by shock-insulating building depth-width ratio and is limited, therefore the party
Method has strict requirements to depth of building.
In conclusion although existing anti-seismic structure can achieve the purpose that part antidetonation, different degrees of presence
Have and increases the unfavorable factors such as structure weight or change structural integrity.However, during seimic wave propagation, by longitudinal wave and shear wave
The surface wave generated after earth's surface is met is only the principal element for causing building structure to destroy, since surface wave wavelength is big, amplitude
By force, it and can only be propagated along earth's surface.If only from building structure aseismatic characteristic is changed, reduces seismic wave intrinsic frequency or avoid and build
Building structure generates the methods of influence of resonance and carries out building structure aseismatic, can not fundamentally solve seismic wave to building structure
Influence.Therefore, if can coat one kind around building structure can absorb seismic wave and change infiltration seimic wave propagation road
The density gradient material of diameter cuts down seismic wave to building structure by forming one of strong protection network in building structure periphery
Influence, it will be significantly thing.
Invention content
The technical problem to be solved by the present invention is to forgo to increase building structure counterweight or change structural integrity not conforming to
Reason, existing security risk, it is proposed that a kind of density gradient earthquake-resistant building structure, the structure disclosure satisfy that design requirement and safety
Ensure.
The present invention is realized using technical solution below：
A kind of density gradient earthquake-resistant building structure, including excavated ground, anchor pole, be fixed on excavated on building slope and
Density gradient material on the basis of intrinsic, the corner of the density gradient material are to bond, weld or be bolted.
Further, further include ground lining shield, the ground lining, which protects, is layed in the density being fixed on intrinsic basic plane
The top of functionally gradient material (FGM) and it is fixed on the inside for having excavated the density gradient material on building slope.
Further, described to be fixed on the density gradient variation for having excavated the density gradient material on building slope as by outer
Successively increase inside, be fixed on the density gradient material on the intrinsic basic plane of ground density gradient variation for from bottom to top according to
Secondary increase.
Further, the group of the density gradient material becomes nonmetallic-nonmetallic, nonmetallic-metal or metal -- Au
Belong to；The density gradient material includes at least I grade of density material, II grade of density material, III grade of density material and IV grade of density material
Expect four grades.
When building structure is by external shock function influence, the absorption of shock wave is carried out by I grade of density material first, is made
Vibration energy is decayed 30% or more, is achieved the purpose that " defeating a force with a tenderness "；Then, it is inhaled with the moulding strain of height of II grade of density material
Receive vibration energy, so that the shock wave for penetrating I grade of density material is decayed again, shake wave energy decaying total amount reach 50% with
On；Again, using III grade of density material of middle-high density, shock wave is made to occur reflection and transmission, decaying total amount reach 70% with
On；Finally, using highdensity IV grade of density material, high intensity reflection occurs for the shock wave before making after the decaying of three-level density material
Or diffraction, vibrations intensity of wave complete attenuation value reach 95% or more, play a very good protection to building structure.
Further, the density p of I grade of density material1It is 0<ρ1≤1.1g/cm3, the density p of II grade of density material2
For 1.1g/cm3<ρ2≤2.8g/cm3, the density p of III grade of density material3For 2.8g/cm3<ρ3≤6.5g/cm3, IV grade of density material
The density p of material4For ρ4>6.5g/cm3。
According to material impedance and energy absorption characteristics, the group of four layers of density gradient material becomes：I grade is with high intensity, Gao Huan
The density material of punching property and light weight；II grade is the density material with high ductibility and resiliency, and usual density is 1 grade of material
1~3 times of density；III grade is the high intensity wave reflection material with certain ductility, plasticity and compactness；IV grade for
The high density densification density material of high impact-resistant and shearing strength.
Further, the grade of the density gradient material is 4~7, preferably 4.
Further, the rock-bolt length >=1m, anchor force are not less than 60KN.
Further, it is described be fixed on excavated the density gradient material on building slope the intrinsic basis of bottom ultra-deep it is flat
0.5~2m below face.
The present invention directly implements antidetonation protection in building structure building slope and the intrinsic basis of ground, avoids and is tied in building
The cumbersome technique that anti-seismic material is added in structure, reduces the consumption of anti-seismic material, does not change building structure own wt, be conducive to
Improve the safety of building structure entirety.
In order to preferably protect building structure, when using density gradient earthquake-resistant building structure of the present invention, also may be used
Simultaneously using other anti-shock methods such as seismic hardening, damping reinforcement or base isolation reinforcements.
Description of the drawings
Fig. 1 is density gradient earthquake-resistant building structure plan view of the present invention；
Fig. 2 is density gradient earthquake-resistant building structure sectional view of the present invention；
Fig. 3 is density gradient material composed structure schematic diagram of the present invention；
Fig. 4 is density gradient material corner connection diagram of the present invention；
Fig. 5 is density gradient material of the present invention and building slope connection diagram；
Wherein, above-mentioned attached drawing includes the following drawings label：1, ground has been excavated；2, density gradient material；3, anchor pole；4,
Base lining shield；5, bolt；6, I grade of density material；7, II grade of density material；8, III grade of density material；9, IV grade of density material；10,
Intrinsic basis.
Specific implementation mode
In order to make the object of the invention, technical solution be more clearly understood, below by embodiment, the present invention is made further
It is described in detail.
Embodiment one：
As shown in Figures 1 to 5, a kind of density gradient earthquake-resistant building structure, including excavated ground 1, anchor pole 3, be fixed on
The density gradient material 2 in 1 side slope of ground and on intrinsic basis 10 is excavated, the corner of the density gradient material 2 is viscous
Knot, welding or bolt 5 connect.Further include ground lining shield 4, the ground lining shield 4, which is layed in, to be fixed in intrinsic basic 10 planes
Density gradient material 2 top and be fixed on the inside for having excavated the density gradient material 2 in 1 side slope of ground.
After the completion of ground excavates, smooth, first lining is carried out to building slope and is handled；After the completion of processing, by density gradient material
Material 2 is tightly attached to periphery and intrinsic basic 10 surface of ground of ground, described to be fixed on the density level bands excavated in 1 side slope of ground
The density gradient for spending material 2 changes by being followed successively by inside outside：Open-cell Aluminum Foam (density 0.40g/cm3(density is)-aluminium
2.7g/cm3)-titanium (density 4.54g/cm3)-steel (density 7.85g/cm3), and connected by anchor pole 3 with building slope
It connects；The density gradient material 1 being fixed in intrinsic basic 10 planes of ground is followed successively by from bottom to top：(density is Open-cell Aluminum Foam
0.40g/cm3)-aluminium (density 2.7g/cm3)-titanium (density 4.54g/cm3)-steel (density 7.85g/cm3), and and ground
Intrinsic basis 10 is attached by anchor pole 3.3 length of anchor pole be 1.5m, anchor force 68KN, layout density be 1.5m ×
1.5m, the corner in intrinsic basic 10 planes of building slope and ground, by two rows of M-16 high-strength bolts 5 to density level bands
It spends material 2 and carries out corner connection.Anti-seismic material carries out the subsequent handlings such as lining shield after installation is complete.
Using structure of the invention, density gradient material 2 absorbs and displaced shock wave well, and building structure is made to be had
The protection of effect, seismic behavior can reach eight grades.
The foregoing is merely presently preferred embodiments of the present invention and oneself, not with the present invention for limitation, it is all the present invention essence
Impartial modifications, equivalent substitutions and improvements etc., should be included in the patent covering scope of the present invention made by within refreshing and principle.
Claims (8)
1. a kind of density gradient earthquake-resistant building structure, which is characterized in that including having excavated ground (1), anchor pole (3), being fixed on
Excavate the density gradient material (2) in ground (1) side slope and on intrinsic basic (10), the corner of the density gradient material (2)
Place is bonding, welding or bolt (5) connect.
2. density gradient earthquake-resistant building structure according to claim 1, which is characterized in that further include ground lining shield (4), institute
Ground lining shield (4) is stated to be layed in the top for the density gradient material (2) being fixed in intrinsic basic (10) plane and be fixed on
The inside of the density gradient material (2) in ground (1) side slope is excavated.
3. density gradient earthquake-resistant building structure according to claim 1, which is characterized in that described be fixed on has excavated ground
(1) the density gradient variation of the density gradient material in side slope (2) is by successively increasing inside outside, it is inherently basic being fixed on ground
(10) the density gradient variation of the density gradient material in plane (2) is to successively increase from bottom to top.
4. density gradient earthquake-resistant building structure according to claim 3, which is characterized in that the density gradient material (2)
Group become nonmetallic-nonmetallic, nonmetallic-metal or metal-metal；The density gradient material (2) is close including at least I grade
Spend (9) four material (6), II grade of density material (7), III grade of density material (8) and IV grade of density material grades.
5. density gradient earthquake-resistant building structure according to claim 4, which is characterized in that I grade of density material (6)
Density p1It is 0<ρ1≤1.1g/cm3, the density p of II grade of density material (7)2For 1.1g/cm3<ρ2≤2.8g/cm3, III grade of density
The density p of material (8)3For 2.8g/cm3<ρ3≤6.5g/cm3, the density p of IV grade of density material (9)4For ρ4>6.5g/cm3。
6. density gradient earthquake-resistant building structure according to claim 4, which is characterized in that the density gradient material (2)
Grade be 4~7.
7. density gradient earthquake-resistant building structure according to claim 1, which is characterized in that anchor pole (3) length >=1m,
Anchor force is not less than 60KN.
8. density gradient earthquake-resistant building structure according to claim 1, which is characterized in that described be fixed on has excavated ground
(1) 0.5~2m below intrinsic basic (10) plane of the bottom ultra-deep of the density gradient material in side slope (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810842545.5A CN108755783A (en) | 2018-07-27 | 2018-07-27 | A kind of density gradient earthquake-resistant building structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810842545.5A CN108755783A (en) | 2018-07-27 | 2018-07-27 | A kind of density gradient earthquake-resistant building structure |
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| Publication Number | Publication Date |
|---|---|
| CN108755783A true CN108755783A (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810842545.5A Withdrawn CN108755783A (en) | 2018-07-27 | 2018-07-27 | A kind of density gradient earthquake-resistant building structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577381A (en) * | 2018-12-17 | 2019-04-05 | 济南市市政工程设计研究院（集团）有限责任公司 | A kind of shock isolation method of underground structure and the underground structure of shock insulation |
-
2018
- 2018-07-27 CN CN201810842545.5A patent/CN108755783A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577381A (en) * | 2018-12-17 | 2019-04-05 | 济南市市政工程设计研究院（集团）有限责任公司 | A kind of shock isolation method of underground structure and the underground structure of shock insulation |
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Application publication date: 20181106 |
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| WW01 | Invention patent application withdrawn after publication |