CN206683561U - A kind of device to the detection of standard circular arc section construction error - Google Patents

Abstract

A kind of device to the detection of standard circular arc section construction error, belong to tunnel construction detection technique field, can solve that when current tunnel excavation contour line, preliminary bracing flatness and two lining chassis curved panel deformation detections precision instrument must be relied on（Total powerstation）To detect, the shortcomings that detection time is long, the depth gauge rule, wheel shaft and pulley of perforation are arranged with including chute with a scale, measurement pedestal, among the chute bottom groove is provided with along track length direction, the blade of groove and depth gauge rule forms gap and coordinated, wheel shaft is located at wheel shaft both ends respectively through perforation, pulley.The utility model can save manpower and save the time, increase the benefit.

Description

A kind of device to the detection of standard circular arc section construction error

Technical field

The utility model belongs to tunnel construction detection technique field, and in particular to a kind of to standard circular arc section construction error The device of detection.

Background technology

With China's infrastructure fast development, to entity quality criteria requirements more and more higher of constructing, particularly with tunnel The process control of construction quality is most important.Tunnel excavation is as an important step in constructing tunnel, wherein outline excavation The control of line is even more important, and detects whether excavation contour line meets design requirement now, frequently with method be that explosion is slagged tap knot Shu Houyong measuring instruments carry out sweeping section, then by software change figure mode detect contour line whether meet design will Ask, detection time length be present, it is necessary to by precision instrument（Total powerstation）The shortcomings that to detect.

Tunnel is whether to examine preliminary bracing as a concealed work, wherein Tunnel flatness Qualified important indicator, if the time-consuming construction that will excessively largely effect on next process of flatness detection, at present using guiding ruler Method detects, i.e., is detected using the long guiding rulers of 2m, and detection method is close to detected face for detection ulnar surface（First branch face）, for crack Gap, detected using wedge clearance gauge, its numerical value is flatness deviation, for concavo-convex more serious position, using by steel ruler perpendicular to Guiding ruler measure mode, exist in-convenience in use, detection time is long, and flatness detection data are not accurate enough.

Last process of two lining constructions as closing country rock, the two main frocks of lining construction are using by integrated hydraulic platform The sizing punching block of car composition, hydraulic jumbo service life are grown, it may appear that under occurring in the middle part of local deformation, particularly chassis Scratch, it is attractive in appearance to largely effect on two linings, can locally even occupy two lining headroom.Use at present method for：Completed in two lining constructions de- Detected after mould using measurement precision instrument, be then converted into figure by software contrasts to determine to become with two lining chassis contour lines Shaped position and deflection.Detection time length be present, it is necessary to by precision instrument（Full battle instrument）The shortcomings that to detect.

The content of the invention

The utility model in order to solve current tunnel excavation contour line, preliminary bracing flatness and two lining chassis curved panels Precision instrument must be relied on during deformation detection（Total powerstation）To detect, the shortcomings that detection time is long, there is provided a kind of to standard circular arc The device of section construction error detection.

The utility model adopts the following technical scheme that：

A kind of device to the detection of standard circular arc section construction error, including chute with a scale, measurement pedestal are symmetrically set There are the depth gauge rule, wheel shaft and pulley of perforation, groove, groove and depth gauge rule are provided with along track length direction among the chute bottom Blade form gap and coordinate, for wheel shaft through perforation, pulley is located at wheel shaft both ends respectively.

The length of the groove is shorter than the length of chute, is arranged with the both ends of chute along its length and does not stay groove Section.

Detect circular arc rise（Flatness）When chute need to be only positioned in measured circular arc sagittal plane, depth gauge rule is slid To chute midpoint, after stretching depth gauge rule blade contacts with cambered surface, trip bolt fixed ruler frame, lift depth gauge rule, depth gauge rule reading As tested surface is actual loses height（Or flatness）Numerical value, then it can draw error with theoretical value comparison.

The beneficial effects of the utility model are as follows：

1. the utility model is reasonable in design, be skillfully constructed novelty, and break traditions detection mode.

2. the utility model is easy to operate, detection is quick, can detect immediately tunnel excavation contour line whether meet design will Ask, whether two lining chassis deflections or preliminary bracing flatness meet code requirement.

3. the utility model can save manpower and save the time, increase the benefit.

Brief description of the drawings

Fig. 1 is the utility model main structure diagram；

Fig. 2 is the utility model overlooking the structure diagram；

Fig. 3 is the utility model side structure schematic view；

Fig. 4 is that the utility model detects tunnel excavation silhouettes detection schematic diagram；

Wherein：1- chutes；2- depth gauge rules；3- pulleys；4- wheel shafts；5- grooves.

Embodiment

With reference to accompanying drawing, the utility model is described in further detail.

A kind of device to the detection of standard circular arc section construction error, including chute 1 with a scale, measurement pedestal are symmetrically set There are the depth gauge rule 2, wheel shaft 4 and pulley 3 of perforation, groove 5, groove 5 are provided with along the length direction of chute 1 among the bottom of chute 1 Gap is formed with the blade of depth gauge rule 2 to coordinate, wheel shaft 4 is located at the both ends of wheel shaft 4 respectively through perforation, pulley 3.

The length of the groove 5 is shorter than the length of chute 1, be arranged with the both ends of chute 1 along its length do not stay it is recessed Groove section.

1 long 2m of chute, the range of depth gauge rule 2 are 30cm, 4 long 25mm of wheel shaft, the diameter 10mm of pulley 3, the length of groove 5 1900mm, width 50mm, each reserved 50mm in the length direction both ends of chute 1.

Application method when whether detection tunnel excavation contour line meets design requirement is detected for the device is positioned over Position, such as：Design paper detection position is looked into, X is to detect reading, rise formula：, wherein：R is excavation Profile arc radius, L are detection ruler length=2000mm, and the position, which is excavated, if X=Y meets design requirement.The position if X ＜ Y Deficient digging is put, the position is backbreak if X ＞ Y.

Detect tunnel just branch flatness, it is known that just branch flatness is not more than 5cm with the detection of 2m guiding rulers in code requirement tunnel.I.e. The device is positioned over inspection basal plane, depth gauge rule is then slided into chute reading maximum, reading is read, if reading ＞ 50mm, then preliminary bracing flatness do not meet code requirement, it should re-start and fill spray according to code requirement；If reading≤50mm Then preliminary bracing flatness meets code requirement.

The lining chassis deflections of detection two, test position is placed in by detection means, the reading * of depth gauge rule on device（Chassis is grown Degree/2000）The deflection of as two lining chassis（Because the steel form that two lining trolley formworks use is rigid material）.

Claims (2)

1. A kind of 1. device to the detection of standard circular arc section construction error, it is characterised in that：Including chute with a scale（1）, survey Amount pedestal is arranged with the depth gauge rule of perforation（2）, wheel shaft（4）And pulley（3）, the chute（1）Along chute among bottom（1）It is long Degree direction is provided with groove（5）, groove（5）With depth gauge rule（2）Blade formed gap coordinate, wheel shaft（4）Through perforation, pulley （3）It is located at wheel shaft respectively（4）Both ends.
2. A kind of 2. device to the detection of standard circular arc section construction error according to claim 1, it is characterised in that：It is described Groove（5）Length compare chute（1）Length it is short, in chute（1）Both ends along its length, which are arranged with, does not stay groove segment.