CN104990720B - A kind of domes finder charge loading device and its application method - Google Patents

A kind of domes finder charge loading device and its application method Download PDF

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Publication number
CN104990720B
CN104990720B CN201510414426.6A CN201510414426A CN104990720B CN 104990720 B CN104990720 B CN 104990720B CN 201510414426 A CN201510414426 A CN 201510414426A CN 104990720 B CN104990720 B CN 104990720B
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China
Prior art keywords
domes
steel plate
loading
screw rod
jack
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Expired - Fee Related
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CN201510414426.6A
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Chinese (zh)
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CN104990720A (en
Inventor
沈圣
张超
姜绍飞
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Fuzhou University
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Fuzhou University
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Abstract

The present invention relates to a kind of domes finder charge loading device, including domes, geosyncline, the bottom two ends of the domes are connected through base and geosyncline, the outer surface of the domes is coated with one layer of loading steel plate, inner peripheral surface, which is provided with the displacement deformation monitoring system for monitoring node shift value and unit strain value, the outer surface of the loading steel plate, is provided with some be used for the prestressed prestressed load bringing device of domes application radial direction.The domes finder charge loading device can realize that domes apply different load cases in an experiment, and the non-symmetrical load in particularly testing applies, and structure construction is convenient, simple to operate, economical and practical.

Description

A kind of domes finder charge loading device and its application method
Technical field
The present invention provides a kind of domes finder charge loading device and its application method, belongs to domes research skill Art field.
Background technology
Currently the design of mountain tunnel, construction concept are based on New Austrian Tunneling Method, and support form mainly uses composite lining.It is multiple Box-like lining cutting is the tunnel support structure applied according to New Austrian Tunneling Method general principle point two layers of priority of preliminary bracing and secondary lining.By The reasons such as creep and deterioration, anchor pole and steelframe corrosion in tunnel concrete itself, can cause tunnel can not health operation, traffic Smooth and lives and properties are not on the hazard, so need to carry out it health monitoring, and it is nothing that preliminary bracing, which is located on the inside of structure, Method is monitored, and can only be monitored by the secondary lining to outer layer, and the broken of tunnel structure is pushed away come counter by its destruction situation Bad degree, therefore particularly necessary is just seemed to secondary lining research.Secondary lining is domes and ground on ground mostly Inverted arch structure composition under face.At present, domes are mainly focused on to secondary lining damage study.Domes in an experiment Be further applied load form, simulates uniform area load frequently with soil body loading and Water hydraulic static pressure loading, is applied using hydraulic jack Load.But due to the complexity of massif load, in addition to the balanced loads such as common area load, load, may be used also There can be non-symmetrical load, and this load form is difficult to be simulated in an experiment at present, that is, enables and simulate in an experiment, if Standby cost is also higher.They can not realize a device, the application of a variety of loads simultaneously.
The content of the invention
The purpose of the present invention be for above weak point there is provided a kind of domes finder charge loading device and its Application method.
It is a kind of domes finder charge loading device that the present invention, which solves the scheme that is used of technical problem, including arch Structure, geosyncline, the bottom two ends of the domes are connected through base and geosyncline, and the outer surface of the domes is coated with One layer of loading steel plate, inner peripheral surface is provided with the displacement deformation monitoring system for monitoring node shift value and unit strain value, It is provided with the outer surface of the loading steel plate some for domes application, radially prestressed prestressed load to be applied Feeder apparatus.
Further, the loading steel plate is the arc-shaped groove profile knot being made up of a circular arc steel plate and two edge of a wing steel plates Structure, the quantity of the loading steel plate is three, and the arc length of each loading steel plate is the 1/3 of domes arc length.
Further, the displacement deformation monitoring system includes an optical fiber and several displacement meters, the optical fiber patch Invest in the inner peripheral surface of domes, the displacement meter is also distributed in the inner peripheral surface of domes.
Further, the prestressed load bringing device includes some jack and screw rod, and the jack is distributed in On the outer surface for loading steel plate, dynamometer, the jack and the contact for loading steel plate are provided with the top of each jack Position is provided with loading backing plate, and the bottom shape of the loading backing plate is the arc adaptable with the loading steel plate peripheral part shape Shape structure, the screw rod is connected radially across domes, wherein one end after being stretched out from loading backing plate with jack, dynamometer, The other end is fixed after passing through the center of circle of domes through fixed plate.
Further, the quantity of the jack is three, and one of jack is located at domes outer surface Middle part, two jack are symmetrically placed in the both sides of domes outer surface, the fixed plate include being used for bearing with it is described The steel plate of the opposite power of jack, bottom and the geosyncline of the steel plate are connected, and top and sidepiece are connected with screw rod.
Further, the screw rod of domes outer surface both sides and the cohesive end of the steel plate are provided with cushion block.
Further, the screw rod positioned at domes outer surface both sides is made up of screw rod A, screw rod B, the screw rod A warps Junction steel plate is connected with screw rod B, the U-shaped for being shaped as having two edges of a wing of the junction steel plate, the screw rod A and screw rod B It is connected on the edge of a wing, the junction steel plate passes through the center of circle of domes.
Further, in addition to pulling force sensor loading device, the pulling force sensor loading device is by several pillars Pulling force sensor, load output instrument, nut composition, the pillar pulling force sensor, which is worn, to be penetrated on screw rod.
Further, the domes are made up of concreting, the central angle of domes
A kind of application method of domes finder charge loading device, comprises the following steps:
(1)Jack positioned at domes peripheral part surface applies prestressed load, and the size being further applied load is by surveying Power meter is adjusted, it is ensured that the load that each jack applies is equal;
(2)Jack apply load pass sequentially through loading backing plate, loading steel plate, screw rod, junction steel plate, steel plate, cushion block, Geosyncline makes domes produce deformation, shift value, optical fiber prison positioned at the displacement meter monitoring node on domes inner peripheral portion surface Survey the strain value of unit;
(3)Jack, dynamometer are removed again, nut screw rod is screwed in into, pillar pulling force sensor, which is worn, to be penetrated in every screw rod On, and be connected with load output instrument;
(4)Tighten nut using spanner, by load backing plate, loading steel plate, screw rod, junction steel plate, steel plate, cushion block, Groove is further applied load on domes, and the size being further applied load is adjusted by pillar pulling force sensor, it is ensured that three applications Load it is equal, realize the application of evenly load;
(5)Positioned at the strain of the shift value, fiber-optic monitoring unit of the displacement meter monitoring node on domes inner peripheral portion surface Value.
Compared with prior art, the invention has the advantages that:The domes finder charge loading device and its Application method can realize the application of a variety of load cases of device, can solve the problem that asymmetric lotus in existing experiment loading scheme Carry the problem applied;Subject structure is made up of concrete and steel, with low cost;Apply different load cases, only need Size or tighten the size of nut load manually to realize that change jack is further applied load, it is simple to operate.
Brief description of the drawings
Patent of the present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the inventive embodiments one;
Fig. 2 is the structural representation of domes;
Fig. 3 is the structural representation of loading steel plate;
Fig. 4 is the structural representation of the inventive embodiments two;
In figure:
1- dynamometers;2- jack;3- loads backing plate;4- domes;5- displacement meters;6- screw rods;7- optical fiber;8- spiral shells Bolt;9- steel plates;10- geosynclines;11- cushion blocks;12- bases;13- loads steel plate;14- junction steel plates;15- pillar pulling force sensors; 16- loads export instrument;17- nuts;18- screw rods A;19- screw rods B.
Embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in figures 1-4, a kind of domes finder charge loading device, including domes 4, geosyncline 10, the arch The bottom two ends of shape structure 4 are connected through base 12, bolt 8 and geosyncline 10, and the outer surface of the domes 4 is coated with one layer Steel plate 13 is loaded, inner peripheral surface is provided with the displacement deformation monitoring system for monitoring node shift value and unit strain value, institute It is provided with the outer surface for stating loading steel plate 13 some for domes application, radially prestressed prestressed load to be applied Feeder apparatus.
In the present embodiment, the loading steel plate is the arc-shaped groove being made up of a circular arc steel plate and two edge of a wing steel plates Type structure, the quantity of the loading steel plate is three, and the arc length of each loading steel plate is the 1/3 of domes arc length.
In the present embodiment, the displacement deformation monitoring system includes an optical fiber 7 and several displacement meters 5, described Optical fiber is attached in the inner peripheral surface of domes 4, and the displacement meter 5 is also distributed in the inner peripheral surface of domes.
In the present embodiment, the prestressed load bringing device includes some jack 2 and screw rod 6, the jack 2 On the outer surface for being distributed in loading steel plate 13, dynamometer 1, the jack and loading steel are provided with the top of each jack The contact position of plate is provided with loading backing plate 3, and the bottom shape of the loading backing plate 3 is and the loading peripheral part shape of steel plate 13 The adaptable arcuate structure of shape, the screw rod 6 radially across domes, wherein one end from loading backing plate stretch out after with it is very heavy Top, dynamometer connection, the other end are fixed after passing through the center of circle of domes through fixed plate.
In the present embodiment, the quantity of the jack is three, and one of jack is located at the outer weekly form of domes The middle part in face, two jack are symmetrically placed in the both sides of domes outer surface, the fixed plate include being used for bearing with The steel plate 9 of the opposite power of the jack, bottom and the geosyncline of the steel plate are connected, and top and sidepiece are connected with screw rod.
In the present embodiment, the screw rod of domes outer surface both sides and the cohesive end of the steel plate are provided with pad Block 11.
In the present embodiment, the screw rod positioned at domes outer surface both sides is made up of screw rod A18, screw rod B19, described Screw rod A is connected through junction steel plate 14 with screw rod B, the U-shaped for being shaped as having two edges of a wing of the junction steel plate, the screw rod A and screw rod B is connected on the edge of a wing, and the junction steel plate passes through the center of circle of domes.
In the present embodiment, in addition to pulling force sensor loading device, the pulling force sensor loading device is by several Pillar pulling force sensor 15, load output instrument 16, nut 17 are constituted, and the pillar pulling force sensor, which is worn, to be penetrated on screw rod.
In the present embodiment, the domes are made up of concreting, the central angle of domes
A kind of application method of domes finder charge loading device, comprises the following steps:
(1)Jack positioned at domes peripheral part surface applies prestressed load, and the size being further applied load is by surveying Power meter is adjusted, it is ensured that the load that each jack applies is equal;
(2)Jack apply load pass sequentially through loading backing plate, loading steel plate, screw rod, junction steel plate, steel plate, cushion block, Geosyncline makes domes produce deformation, shift value, optical fiber prison positioned at the displacement meter monitoring node on domes inner peripheral portion surface Survey the strain value of unit;
(3)Jack, dynamometer are removed again, nut screw rod is screwed in into, pillar pulling force sensor, which is worn, to be penetrated in every screw rod On, and be connected with load output instrument;
(4)Tighten nut using spanner, by load backing plate, loading steel plate, screw rod, junction steel plate, steel plate, cushion block, Groove is further applied load on domes, and the size being further applied load is adjusted by pillar pulling force sensor, it is ensured that three applications Load it is equal, realize the application of evenly load;
(5)Positioned at the strain of the shift value, fiber-optic monitoring unit of the displacement meter monitoring node on domes inner peripheral portion surface Value.
Specific implementation process:
Embodiment one:
As shown in figure 1, the jack positioned at domes peripheral part surface applies prestressed load, the size being further applied load Adjusted by dynamometer, it is ensured that the load that each jack applies is equal;Jack apply load pass sequentially through loading backing plate, Loading steel plate, screw rod, junction steel plate, steel plate, cushion block, geosyncline make domes produce deformation, positioned at domes inner peripheral portion table Shift value, the strain value of fiber-optic monitoring unit of the displacement meter monitoring node in face.
Embodiment two:
As shown in figure 4, jack, dynamometer are removed, nut is screwed in into screw rod, pillar pulling force sensor, which is worn, to be penetrated in every On screw rod, and it is connected with load output instrument;Nut is tightened using spanner, by loading backing plate, loading steel plate, screw rod, connection steel Plate, steel plate, cushion block, geosyncline are further applied load on domes, and the size being further applied load is adjusted by pillar pulling force sensor Section, it is ensured that the load of three applications is equal, realizes the application of evenly load;Displacement meter positioned at domes inner peripheral portion surface is supervised Survey shift value, the strain value of fiber-optic monitoring unit of node.
The object, technical solutions and advantages of the present invention are further described by above-listed preferred embodiment, are answered Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.

Claims (4)

1. a kind of domes finder charge loading device, it is characterised in that:Including domes, geosyncline, the domes Bottom two ends be connected through base and geosyncline, the outer surface of the domes is coated with one layer of loading steel plate, inner peripheral surface It is provided with the displacement deformation monitoring system for monitoring node shift value and unit strain value, the outer surface of the loading steel plate On be provided with and some be used to apply domes radially prestressed prestressed load bringing device;The prestressed load is applied Feeder apparatus includes some jack and screw rod, and the jack is distributed on the outer surface of loading steel plate, each jack Top is provided with dynamometer, and the contact position of the jack and loading steel plate is provided with loading backing plate, the loading backing plate Bottom shape is the arcuate structure adaptable with the loading steel plate peripheral part shape, the screw rod radially across domes, Wherein one end from loading backing plate stretch out after be connected with jack, dynamometer, the other end pass through domes the center of circle after through fixation Plate is fixed;The loading steel plate is the arc-shaped trench structure being made up of a circular arc steel plate and two edge of a wing steel plates, institute The quantity for stating loading steel plate is three, and the arc length of each loading steel plate is the 1/3 of domes arc length;The displacement deformation monitoring System includes an optical fiber and several displacement meters, and the optical fiber is attached in the inner peripheral surface of domes, the displacement Meter is also distributed in the inner peripheral surface of domes;The quantity of the jack is three, and one of jack is located at arch The middle part of structure outer surface, two jack are symmetrically placed in the both sides of domes outer surface, and the fixed plate includes Steel plate for bearing the power opposite with the jack, bottom and the geosyncline of the steel plate are connected, top and sidepiece and screw rod It is connected;The screw rod of domes outer surface both sides and the cohesive end of the steel plate are provided with cushion block;Positioned at domes The screw rod of outer surface both sides is made up of screw rod A, screw rod B, and the screw rod A is connected through junction steel plate with screw rod B, the connection steel The U-shaped for being shaped as having two edges of a wing of plate, the screw rod A and screw rod B is connected on the edge of a wing, and the junction steel plate passes through The center of circle of domes.
2. domes finder charge loading device according to claim 1, it is characterised in that:Also include pulling force sensor Loading device, the pulling force sensor loading device is exported instrument, nut and constituted by several pillar pulling force sensors, load, institute State pillar pulling force sensor and wear and penetrate on screw rod.
3. domes finder charge loading device according to claim 1, it is characterised in that:The domes are by mixing Solidifying soil, which is poured, to be made, the central angle of domes
4. a kind of application method of domes finder charge loading device, it is characterised in that using as described in claim 1-3 Any domes finder charge loading device, and carry out according to the following steps:
(1)Jack positioned at domes peripheral part surface applies prestressed load, and the size being further applied load passes through dynamometer Regulation, it is ensured that the load that each jack applies is equal;
(2)The load that jack applies passes sequentially through loading backing plate, loading steel plate, screw rod, junction steel plate, steel plate, cushion block, geosyncline Domes are made to produce deformation, shift value, fiber-optic monitoring list positioned at the displacement meter monitoring node on domes inner peripheral portion surface The strain value of member;
(3)Jack, dynamometer are removed again, nut is screwed in into screw rod, pillar pulling force sensor, which is worn, to be penetrated on every screw rod, and It is connected with load output instrument;
(4)Nut is tightened using spanner, is existed by loading backing plate, loading steel plate, screw rod, junction steel plate, steel plate, cushion block, geosyncline It is further applied load on domes, the size being further applied load is adjusted by pillar pulling force sensor, it is ensured that the lotus of three applications Carry equal, realize the application of evenly load;
(5)The strain value of shift value, fiber-optic monitoring unit positioned at the displacement meter monitoring node on domes inner peripheral portion surface.
CN201510414426.6A 2015-07-15 2015-07-15 A kind of domes finder charge loading device and its application method Expired - Fee Related CN104990720B (en)

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CN106248492A (en) * 2016-08-10 2016-12-21 天津大学 A kind of assay device of the intrinsic pressure loading of shield tunnel pipe ring
CN106289991A (en) * 2016-08-28 2017-01-04 安徽省煤炭科学研究院 A kind of cylindrical horizontal colliery roadway gongwu simulation test device
CN109738977B (en) * 2018-12-17 2020-08-21 中国科学院长春光学精密机械与物理研究所 Prestress loading structure of large-deviation aspherical mirror
CN109752204B (en) * 2019-01-28 2021-03-16 成都理工大学 Asymmetric loading simulation test method and device for contractible steel arch centering
CN110186703A (en) * 2019-06-17 2019-08-30 福建博海工程技术有限公司 A kind of mountain tunnel loading test loading device
CN110441083A (en) * 2019-08-21 2019-11-12 上海市机械施工集团有限公司 A kind of domes mechanical test loading device and loading method
CN112903458A (en) * 2021-01-29 2021-06-04 北京工业大学 Space node test loading device with adjustable loading angle

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