CN101349563A

CN101349563A - Method of laying out line for building construction measurement

Info

Publication number: CN101349563A
Application number: CNA2008101968565A
Authority: CN
Inventors: 刘利勋; 高磊; 曾凡伟
Original assignee: Wuhan Construction Engineering Co Ltd
Current assignee: Wuhan Construction Engineering Co Ltd
Priority date: 2008-09-03
Filing date: 2008-09-03
Publication date: 2009-01-21

Abstract

The invention discloses a building construction measurement setting-out process, which comprises the following steps: firstly, leading an extension line of a required projected straight line to measure on a higher position, and be fixed and brightly marked through utilizing a modern instrument using as the accurate base point coordinate of a to-be-projected line, and deciding the to-be-projected line, secondly fixing the to-be-projected line on a higher mark point with a steel wire or a nylon wire to form a to-be-measured line, thirdly placing a water container or a mirror reflector on the lower portion or under the right lower portion of a foundation pit to-be-measured line to form a projected mirror, fourthly affirming the point which is pointed by a pen in the hand of an operator as the perpendicular plane point through a higher observer observing that the to-be-measured line, the inverted image of the to-be-measured line in the lower container and the pen point in the hand of a measuring person are in a projection perpendicular plane, and fifthly deciding each projected point in turn to form a projected line. The process of the invention has easy operation, and much simpler operation, and accurate construction measurement setting-out.

Description

A kind of method of laying out line for building construction measurement

Technical field

The present invention relates to lower (as independent deep basal pit etc.) projection measurement unwrapping wire technical field, more specifically relate to a kind of method of laying out line for building construction measurement.

Background technology

The building trade of China has long history, and in evolution in several thousand, build labourers emerge Infinite Creativity, have invented the countless construction technologies that are full of resource.Only with regard to measuring unwrapping wire, ancients are the methods such as a strand law, plummet vertically draw down, par pipe diversion horizontal line of just colluding of employing extensively.Modern a large amount of employing transit, total powerstation even GPS, but these instrument practicalities are subjected to weather, environment and measurement cost, the influence of convenient degree is bigger.Along with becoming more prosperous every day of modernization industry, a large amount of industrial rooms or modern emerging steel-structure factory building newly-built, its basis all is that single column foundation is stressed basically, because base for post quantity is various, colum network size is big, degree of depth absolute altitude is various, excavation back foundation ditch is relatively independent and do not connect, and all needs unwrapping wire in each foundation ditch.How the eminence datum line is drawn that to survey to lower be the beginning work of foundation works etc., its top priority is a construction line-putting, is about to eminence lead-in wire (axis etc.) and throws exactly after accurately measuring and survey to operating lower (bottom the foundation ditch etc.).

Both can adopt traditional line to weigh down vertical pendant method in the building operation usually and carry out, but because it is influenced by the weather wind direction very easily, the place exists line to weigh down and is difficult for problems such as vertically steady, time-consuming, that the assurance difficulty is big.

Can adopt instrument and equipment to carry out again through big instrument or the contour accurate rate of total powerstation, though can guarantee the unwrapping wire degree of accuracy, reduce operation easier, but because its instrument and equipment keeps flat at the foundation ditch edge and the adjustment level, after having put line, a last foundation ditch also to move to next foundation ditch, repeat the action of front, so there are problems such as time-consuming, that equipment has high input.

Summary of the invention

The objective of the invention is to be to provide a kind of method of laying out line for building construction measurement, easy to implement the method, effectively improved work efficiency, operate more simple and direct, accurate construction survey unwrapping wire.

To achieve these goals, the present invention adopts following technical measures:

A kind of method of laying out line for building construction measurement the steps include:

1. utilize modern equipment (through big instrument, total powerstation) to throw to survey the extended line of straight line to draw to survey to eminence and secure fixation, distinct sign, it as the basic point coordinate of waiting to throw survey line accurately, is determined to wait to throw survey line and guarantee its accuracy;

2. be fixed on the eminence identification point with funiculus (finer wire line or nylon wire), form survey line to be drawn with certain tensile strength;

3. under lower (foundation ditch) waits to draw survey line, place reflecting piece such as water container (preferably placing a little prepared Chinese ink in the water) or mirror, form to throw and survey minute surface;

4. by waiting to draw the survey line inverted image in eminence observer observation survey line to be drawn, the lower container, executing in (order) survey person hand nib, confirm that nib is given directions in testing person's hand to be the vertical plane point of waiting to draw survey line at same projection vertical plane;

5. confirm respectively to throw measuring point successively, form and throw survey line.

The present invention compared with prior art has the following advantages and effect:

The present invention is simple, accurate, practical, convenient, whether both having overcome large span when utilizing gantry stake messenger wire, high spatial plumb bob can't be subjected to windage near lead-in wire, the endurance of hand that is subjected to operating personnel and effect of jitter and lead-in wire, plumb bob messenger wire, can be accuracy after drawing under straight line is determined to go between in vessel water by inverted image again simultaneously; Overcome the influence that modern instrument (transit, total powerstation) is set up place, weather, environment and viewing angle again; And can utilize the inspection of minute surface principle whether to throw measuring point on same plane, further confirm to throw the accuracy of measuring point, thereby judge the accuracy of throwing survey line.

Description of drawings

Accompanying drawing 1 is a kind of operation chart of method of laying out line for building construction measurement.

Wherein: 1-range estimation person, 2-funiculus (finer wire or nylon wire, thin more good more), funiculus inverted image in the 3-container, reflecting piece such as 4-lower water container (preferably placing a little prepared Chinese ink in the water) or mirror, 5-observer (nib), 6-eminence anchor point is at the bottom of the 7-foundation ditch or lower

Embodiment

Below in conjunction with accompanying drawing the present invention is described in further detail:

A kind of method of laying out line for building construction measurement, its principle is as follows: the water surface must be parallel with big ground in the lower container, and then the eminence funiculus is the vertical projection of lead-in wire with ground at inverted image from water.In funiculus, inverted image, 3 coincidences of nib, nib must be in the vertical projection of lead-in wire.

Its concrete steps are:

1. utilizing modern equipment (transit, total powerstation etc.) to throw to survey straight line to draw from original coordinates or original lead-in wire surveys to eminence (as the foundation ditch limit) and timber (nailing as accurate coordinate in top) or reinforcing bar, steel nail (top portrayal cross curve is as accurate coordinate) secure fixation, distinct sign, with it as the basic point coordinate of waiting to throw survey line accurately, since the use of modern equipment, the accuracy that can guarantee to wait to throw survey line fully;

2. with having the funiculus 2 of certain tensile strength (as finer wire line, rubber-like nylon wire etc., carefully more can represent the accuracy of waiting to throw survey line more) be fixed on the eminence anchor point 6 (big or wind arranged as height, can increase pendant at the funiculus middle part and prevent that funiculus is subjected to windage to become curved surface aloft), form survey line to be drawn;

3. under lower 7 (at the bottom of the foundation ditch) waits to draw survey line, place reflecting piece such as water container 4 (preferably placing a little prepared Chinese ink in the water) or mirror, can occur the minute surface inverted image 3 of funiculus in the water, form to throw and survey minute surface;

4. write at lower by a people and give directions, the edge is with observing survey aloft for a people range estimation person 1, and when treating that observer 5 determines funiculus 2, inverted image, 3 coincidences of nib, then the nib indication must be a following point of vertically drawing of axis;

As adopt reflecting piece, then can directly on reflecting piece, get ready and can accurately introduce.

Claims

1, a kind of method of laying out line for building construction measurement the steps include:

A, utilize and to throw the extended line of surveying straight line through big instrument or total powerstation and draw to survey to eminence and fixing, distinctness and identify, it as the basic point coordinate of waiting to throw survey line, is determined survey line to be thrown;

B, be fixed on the eminence identification point, form survey line to be drawn with steel wire or nylon wire;

C, under lower or foundation ditch wait to draw survey line, place water container or mirror reflecting piece, form to throw and survey minute surface;

D, by waiting to draw in survey line inverted image, the testing person's hand nib in eminence observer observation survey line to be drawn, the lower container at same projection vertical plane, confirm that nib is given directions in testing person's hand to be the vertical plane point of waiting to draw survey line;

E, confirm respectively to throw measuring point successively, form and throw survey line.