CN103424100A - Method for determining integral inclination of historic building structure under the effect of industrial vibration - Google Patents
Method for determining integral inclination of historic building structure under the effect of industrial vibration Download PDFInfo
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- CN103424100A CN103424100A CN201210159580XA CN201210159580A CN103424100A CN 103424100 A CN103424100 A CN 103424100A CN 201210159580X A CN201210159580X A CN 201210159580XA CN 201210159580 A CN201210159580 A CN 201210159580A CN 103424100 A CN103424100 A CN 103424100A
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Abstract
The invention relates to the field of historic building structure protection, and particularly relates to a method for determining integral inclination of a historic building structure under the effect of industrial vibration. The method comprises steps of measuring on site the horizontal velocity response V[0] of the highest point of the historic building structure and the horizontal velocity response V[01] of the highest point of the bearing structure; selecting the equivalent shearing elastic wave velocity V[S] according to the type of the historic building; measuring on site the shearing elastic wave velocity V[S1] of the bearing structure; calculating the integral horizontal dynamic strain [epsilon][S] of the historic building structure according to horizontal velocity response V[0] of the highest point of the historic building structure and the equivalent shearing elastic wave velocity V[S]; and calculating the horizontal dynamic strain [epsilon][S1] of the bearing structure of the historic building according to horizontal velocity response V[01] of the highest point of the bearing structure and the shearing elastic wave velocity V[S1] of the bearing structure.
Description
Technical field
The present invention relates to the field of ancient building structural defence, be specifically related to determine a kind of method that the ancient building structural entity tilts under the industrial vibration effect.
Background technology
China is a historical relic ancient country, is also historical relic big country, has world cultural heritage 38 places, key historical sites under state protection 2348 places.These legacy are witness and symbols of 5,000 years Chinese civilizations, are the rarities of motherland.But, development along with the fundamental construction cause, the industrial vibration sources such as high-speed railway, highway, urban track traffic (subway, subway) increase sharply, impact and the harm also thereupon aggravation of these industrial vibration to ancient buildings such as ground removable or Immovable Cultural Relics, particularly temple, palace, building, ancient towers.From built track traffic (subway, subway etc.) operation situation, industrial vibration has had a strong impact on the survival condition of ancient building, as solved not in time, will cause ancient building to damage gradually.
The earthquake-resistant design of modern building fabric is to take stress (dynamic stress and static stress) that structure born to be less than allowable stress be foundation, and its final purpose is the security that guarantees structure.Ancient building is due to its history, culture and scientific value, more because it is non-renewable resource, therefore can not be the same with modern architecture, and only using security as basis, must, when considering security, also to consider its stability.A large amount of actual measurements show: the dynamic stress that ancient building produces under the industrial vibration effect is far smaller than the static stress (being about 1 ~ 3%) that its deadweight causes, therefore, the dynamic stress that industrial vibration produces causes that the possibility of ancient building structural failure is extremely small, and the integral inclination produced due to dynamic strain often causes the ancient building structure to lose its stability.So can not solve the anti-industrial vibration problem of ancient building by the earthquake-resistant method of modern architecture.
At present, in succession deliver both at home and abroad the paper of the anti-industrial vibration of some ancient buildings, but rested on the analysis aspect of ancient building kinematic behavior more, there is not yet the report relevant with the crack of ancient building, inclination etc." the definite method of allowing vibration index of ancient building structure under the industrial vibration effect " (patent No.: ZL200610170379.6) that I propose, to using fatigue limit as the foundation of allowing vibration index, in order to solve the crack problem (integrality) of ancient building under the industrial vibration effect; The method that under definite industrial vibration effect that the present invention proposes, the ancient building structural entity tilts is that the whole dynamic strain by controlling the ancient building structure prevents its integral inclination, thereby reaches the purpose that keeps the ancient building structural stability.
Summary of the invention
The present invention is directed to the characteristics of the anti-industrial vibration of ancient building (long-term, small); theoretical according to the elastic medium fluctuation; propose a kind of method of determining that under industrial vibration effect ancient building structural entity tilts, thereby provide foundation science, quantitative for the stability of protection ancient building structure.
In order to achieve the above object, the present invention proposes a kind of method of determining that the ancient building structural entity tilts under the industrial vibration effect, comprising:
Step 1: scene records the horizontal velocity response V of ancient building structure highest point
0Horizontal velocity response V with the load-carrying members highest point
01
Step 2: according to its equivalent shearing elasticity velocity of wave V of type selecting of ancient building
S
Step 3: the shearing elasticity velocity of wave V of field measurement ancient building load-carrying members
S1
Step 4: according to the horizontal velocity response V of ancient building structure highest point
0With equivalent shearing elasticity velocity of wave V
STry to achieve the integral level dynamic strain ε of ancient building structure
S;
Step 5: according to the horizontal velocity response V of load-carrying members highest point
01Shearing elasticity velocity of wave V with load-carrying members
S1Try to achieve the press horizontal mobile strain stress of ancient building load-carrying members
S1.
Further, the equivalent shearing elasticity velocity of wave V in described step 2
SFor 50m/s ~ 60m/s.
Further, the integral level dynamic strain ε of described step 4 building structure in the middle ancient times
SAccording to formula ε
S=V
0/ V
STry to achieve V in formula
0The horizontal velocity response of ancient building structure highest point, V
SIt is equivalent shearing elasticity velocity of wave.
Further, the press horizontal mobile strain stress of described step 5 building bearing in middle ancient times structure
S1According to formula ε
S1=V
01/ V
S1Try to achieve V in formula
01The horizontal velocity response of load-carrying members highest point, V
S1It is the shearing elasticity velocity of wave of load-carrying members.
The present invention proposes really to fix on the method that under the industrial vibration effect, the ancient building structural entity tilts, and can provide science, quantitative foundation for the stability of protection ancient building structure.
The accompanying drawing explanation
Fig. 1 is a kind of process flow diagram of determining the method that the ancient building structural entity tilts under the industrial vibration effect of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further described in detail.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, the present invention proposes a kind of method of determining that the ancient building structural entity tilts under the industrial vibration effect, comprising:
Step 1: scene records the horizontal velocity response V of ancient building structure highest point
0Horizontal velocity response V with the load-carrying members highest point
01
Step 2: according to its equivalent shearing elasticity velocity of wave V of type selecting of ancient building
S
Step 3: the shearing elasticity velocity of wave V of field measurement ancient building load-carrying members
S1
Step 4: according to the horizontal velocity response V of ancient building structure highest point
0With equivalent shearing elasticity velocity of wave V
STry to achieve the integral level dynamic strain ε of ancient building structure
S
Step 5: according to the horizontal velocity response V of load-carrying members highest point
01Shearing elasticity velocity of wave V with load-carrying members
S1Try to achieve the press horizontal mobile strain stress of ancient building load-carrying members
S1.
Basic ideas of the present invention are that quality and the rigidity of the members such as ancient building beam, post, wall are evenly distributed in the total space, so this ancient building can be considered as the non-individual body cantilever lever model (i.e. the cantilever lever model is sheared in equivalence) of a homogeneous quality, even rigidity, its size means with the outer profile size of ancient building, its power performance is sheared in equivalence the elastic wave velocity of propagating in the cantilever lever model with one and is described, and this elastic wave propagation speed is exactly the equivalent shearing elasticity velocity of wave propagation V of ancient building structure
S(being called for short equivalent shearing elasticity velocity of wave), it is relevant with the height of the horizontal natural frequency of ancient building structure, ancient building structure and boundary condition etc.According to the analysis from 100 many places ancient building structure field measurements and Data acquisition,, can draw: the equivalent shearing elasticity velocity of wave V in temple, palace
SThe equivalent shearing elasticity velocity of wave V that is about 50m/s, building
SBe about 60m/s.
Theoretical according to the elastic medium fluctuation, can draw: the integral level dynamic strain ε of ancient building highest point under the industrial vibration effect
S(being the integral inclination degree of ancient building structure) responds V with the horizontal velocity of ancient building structure highest point
0Be directly proportional, with the equivalent shearing elasticity velocity of wave V of ancient building structure
SBe inversely proportional to, i.e. formula (1):
ε
S=V
0/V
S （1）
In like manner can obtain: the press horizontal mobile strain stress of ancient building load-carrying members highest point (as the capital of timber structure) under the industrial vibration effect
S1Horizontal velocity response V with the load-carrying members highest point
01Be directly proportional, with the shearing elasticity velocity of wave (V of ancient building load-carrying members
S1) be inversely proportional to.Be formula (2):
ε
S1=V
01/V
S1 （2）
From the calculating and a large amount of field measurement of formula (1), formula (2), can draw: the integral level dynamic strain ε of the ancient building structures such as temple, palace, building
SBe far longer than the press horizontal mobile strain stress of its load-carrying members
S1, and relevant with the version of ancient building, Here it is reason place that some ancient building can tilt suddenly or collapse.Simultaneously also explanation: the research industrial vibration is during on the affecting of ancient building, and not only will consider in order to keep its integrality also needs the expansion in crack to consider the integral inclination degree, thereby keep its stability.
Embodiment:
Drum tower is positioned at Di'anmenwai Dajie city of Beijing axis, Beijing northernmost, is the important symbol of Ancient Times in China city planning.It is established in bright eternally happy 18 years (1420), goes through repairerment, within 1996, is listed in State Protected Historic Site.Drum tower is built on the city platform of 4 meters, and floor area of building is 2736.27m
2, be one and take timber structure as main ancient architecture.Be subject to the trust of Beijing bell tower historical relic research institute, the integral inclination degree with regard to drum tower under peripheral vehicular traffic effect of vibration (press horizontal mobile strain) has carried out field measurement and theoretical analysis.
According to theory, calculate or field measurement is tried to achieve the horizontal velocity response V of drum tower one-piece construction highest point under the traffic vibration effect
0=0.09mm/s; The horizontal velocity response V of its load-carrying members highest point
01=0.09mm/s.According to the structure type of drum tower, choose its equivalent shearing elasticity velocity of wave V
S=50m/s; Scene records the shearing elasticity velocity of wave V of drum tower load-carrying members
S1=1440m/s; According to formula (1) ε
S=V
0/ V
STry to achieve drum tower largest global press horizontal mobile strain (being the integral inclination degree) ε
S=0.18*10
-5According to formula (2) ε
S1=V
01/ V
S1Try to achieve load-carrying members press horizontal mobile strain stress
S1=0.625*10
-7.
Although; the present invention is the clearly explanation by above embodiment; yet in the situation that do not deviate from spirit of the present invention and essence thereof; the person of ordinary skill in the field is when making according to the present invention various corresponding variations and correction, but these corresponding variations and correction all should belong to the protection domain of claim of the present invention.
Claims (4)
1. a method of determining that the ancient building structural entity tilts under the industrial vibration effect, is characterized in that, the method includes the steps of:
Step 1: scene records the horizontal velocity response V of ancient building structure highest point
0Horizontal velocity response V with the load-carrying members highest point
01
Step 2: according to its equivalent shearing elasticity velocity of wave V of type selecting of ancient building
S
Step 3: the shearing elasticity velocity of wave V of field measurement ancient building load-carrying members
S1
Step 4: according to the horizontal velocity response V of ancient building structure highest point
0With equivalent shearing elasticity velocity of wave V
STry to achieve the integral level dynamic strain ε of ancient building structure
S
Step 5: according to the horizontal velocity response V of load-carrying members highest point
01Shearing elasticity velocity of wave V with load-carrying members
S1Try to achieve the press horizontal mobile strain stress of ancient building load-carrying members
S1.
2. method according to claim 1, is characterized in that, the equivalent shearing elasticity velocity of wave V in described step 2
SFor 50m/s ~ 60m/s.
3. method according to claim 1, is characterized in that, the integral level dynamic strain ε of described step 4 building structure in the middle ancient times
SAccording to formula ε
S=V
0/ V
STry to achieve V in formula
0The horizontal velocity response of ancient building structure highest point, V
SIt is equivalent shearing elasticity velocity of wave.
4. method according to claim 1, is characterized in that, the press horizontal mobile strain stress of described step 5 building bearing in middle ancient times structure
S1According to formula ε
S1=V
01/ V
S1Try to achieve V in formula
01The horizontal velocity response of load-carrying members highest point, V
S1It is the shearing elasticity velocity of wave of load-carrying members.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103810385A (en) * | 2014-01-29 | 2014-05-21 | 中国航空规划建设发展有限公司 | Method for protecting safety and stability of movable museum collection in earthquake |
| CN104316005A (en) * | 2014-10-24 | 2015-01-28 | 潘复兰 | Method for determining brick ancient tower dynamic strain under industrial vibration effect |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1046799A (en) * | 1996-08-01 | 1998-02-17 | Nikko Co Ltd | Traveling type elevator scaffolding with plurality of masts |
| CN1995964A (en) * | 2006-12-29 | 2007-07-11 | 五洲工程设计研究院 | Method for determining permissible vibration index of antique building under vibrating action |
-
2012
- 2012-05-21 CN CN201210159580XA patent/CN103424100A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1046799A (en) * | 1996-08-01 | 1998-02-17 | Nikko Co Ltd | Traveling type elevator scaffolding with plurality of masts |
| CN1995964A (en) * | 2006-12-29 | 2007-07-11 | 五洲工程设计研究院 | Method for determining permissible vibration index of antique building under vibrating action |
Non-Patent Citations (3)
| Title |
|---|
| 中华人民共和国住房和城乡建设部: "《古建筑防工业振动技术规范 GB/T50452-2008》", 31 December 2008 * |
| 孙斌，等: "工业建筑倾斜检测和适用性评定", 《建筑科学》 * |
| 杨先健，等: "环境振动引起的地基与结构动应变及其振损评估", 《第7届全国土动力学学术会议论文集》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103810385A (en) * | 2014-01-29 | 2014-05-21 | 中国航空规划建设发展有限公司 | Method for protecting safety and stability of movable museum collection in earthquake |
| CN104316005A (en) * | 2014-10-24 | 2015-01-28 | 潘复兰 | Method for determining brick ancient tower dynamic strain under industrial vibration effect |
| CN104316005B (en) * | 2014-10-24 | 2017-05-17 | 潘复兰 | Method for determining brick ancient tower dynamic strain under industrial vibration effect |
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Application publication date: 20131204 |