CN208751574U - A kind of engineering surveying control point structure - Google Patents

Abstract

A kind of engineering surveying control point structure, concrete pedestal and protection fence including concrete cushion located underground, pile body and markstone, and on ground；The bottom at control point is arranged in concrete cushion; pile body and markstone are successively poured on concrete cushion; surrounding puddled backfill is to ground elevation; cast-in-place concrete pedestal and center protector; drainage duct and fence jack are preset on concrete pedestal; cross mark in control point is squeezed into the protector of center, fence is protected in installation on fence jack, and warning paint face is brushed on the side wall of concrete pedestal.Relative to conventional control point design, the construction method of the utility model is simple, strengthens the disturbance rejection and warning performance at control point, adverse effect caused by avoiding because of dominating pair of vertices normal construction.

Description

A kind of engineering surveying control point structure

Technical field

The utility model relates to engineering measurement fields, and in particular to a kind of engineering surveying control point structure.

Background technique

Engineering surveying control point is widely used, and is related to all Large Scale Construction Engineerings, due to the period one of big construction item As it is longer, measure the service life at control point through entire process of construction, service life is also longer.

General construction project is often directly arranged in control point concrete surface relatively stable in construction area, using quarter It draws, be implanted into the forms such as steel nail, or even withouyt maintenance prevention.By constructing and site traffic is influenced, especially bulk transport vehicle It is current or carry on construction work at night it is current etc. influence, be easy to cause the disturbance, destruction or loss at control point.Engineering survey is construction Primary process, be that each link of engineering project is able to the guarantee smoothly carried out, engineering surveying control network has control global and limit The effect of measurement error processed accumulation, once be affected project construction may be caused it is unfavorable.Therefore it is applied in design and control point Working hour is considered as factors, in addition to its Position Design should avoid the construction area that may be disturbed as far as possible, should also reinforce measurement control The durability and accuracy of system point itself, this just needs to be solved from the robustness and warning design aspect at control point.

Utility model content

The purpose of this utility model is that being directed to above-mentioned the problems of the prior art, a kind of engineering surveying control point knot is provided Structure, the disturbance rejection that can be tightened control a little and warning performance, adverse effect caused by avoiding because of dominating pair of vertices normal construction.

To achieve the goals above, the utility model engineering surveying control point structure, including concrete mats located underground Layer, pile body and markstone, and concrete pedestal and protection fence on ground；The concrete cushion setting is being controlled The bottom of point is made, successively pours pile body and markstone, surrounding puddled backfill to ground elevation, cast-in-place concrete base on concrete cushion Seat and center protector preset drainage duct and fence jack on concrete pedestal, control are squeezed into the protector of center Point cross identifies, installation protection fence on the fence jack, brushes warning paint face on the side wall of the concrete pedestal.

Center protector opening capping above control point cross mark has cover sheet.

The concrete cushion depth of burying is greater than the standard frost penetration of construction project region.

The concrete cushion, pile body poured with markstone together with height not less than 1.5m.

The strength grade of the concrete cushion is not less than C15, and the strength grade of pile body and markstone is not less than C25.

The bottom surface of the center protector is lower than the bottom surface of concrete pedestal, and cross mark in control point is located at center protector Center.

Two drainage ducts are provided on the concrete pedestal, two drainage ducts are opened up in diagonal position.

The warning paint face is formed using yellow dirty oil paint brushing, and the protection fence is made of steel pipe.

The construction method of the utility model engineering surveying control point structure, comprising the following steps:

Step 1: determining control point position and an outer contour are put in measurement；

Step 2: excavation pit；

Step 3: bottom of foundation ditch carries out compacting processing, compacted density reaches 0.95 or more after compacting, is laid with concrete mats Layer；

Step 4: formwork and cast-in-place concrete pile body and markstone；

Step 5: the surrounding compaction in layers of pile body, compacting factor is not less than 0.90, is backfilled to ground elevation, single layer backfill Thickness is not more than 300cm；

Step 6: control point cross mark is squeezed into, and the point centered on control point cross mark, central point outer contour range Interior excavate is not less than 15cm, formwork cast-in-place concrete pedestal and center protector lower than ground, and embedded by predetermined position in advance Twice drainage duct and protection fence jack, two drainage ducts are opened up in diagonal position；

Step 7: installation protection fence, the brushing warning paint face on the side wall of concrete pedestal, and be center protector It installs cover sheet additional, completes the construction of engineering surveying control point structure.

The outer contour at the control point is not less than 1.3m × 1.3m.

In the step two excavation of foundation pit depth be not less than 1.5m, and be greater than construction project regional standard frost penetration with Under, excavation of foundation pit carries out slope according to geological conditions.

Compared with prior art, the utility model by underground be arranged concrete cushion, then concrete cushion successively Pile body and markstone are poured, concrete pedestal is equipped on ground and opens up center protector in center, enhances measurement control The whole performance of noiseproof of point is made, warning paint face is brushed on the side wall of concrete pedestal, protection is installed on concrete pedestal and is enclosed Column enhances warning performance, and cross mark in control point is located in the protector of center and increases protective cover plate, enhances cross The disturbance rejection and anti-damage performance of knowledge add drainage duct in the protector of center, can effectively avoid being impregnated in slot by rainwater.Phase For conventional control point design, the utility model construction method is simple, greatly improves disturbance rejection and the police at control point The property shown.

Detailed description of the invention

The stereoscopic schematic diagram of Fig. 1 the utility model engineering surveying control point structure；

The diagrammatic cross-section of Fig. 2 the utility model engineering surveying control point structure；

In attached drawing: 1- concrete cushion；2- pile body；3- markstone；4- drainage duct；5- fence jack；6- concrete pedestal； The center 7- protector；The control point 8- cross mark；9- protects fence；10- warns paint face；11- cover sheet.

Specific embodiment

The following describes the utility model in further detail with reference to the accompanying drawings.

Referring to Fig. 1, Fig. 2, the engineering surveying control point structure of the utility model include concrete cushion 1 located underground, Pile body 2 and markstone 3, and concrete pedestal 6 and protection fence 9 on ground.Concrete cushion 1 is arranged at control point Bottom, successively pour pile body 2 and markstone 3, surrounding puddled backfill to ground elevation on concrete cushion 1.Cast-in-place concrete base Seat 6 and center protector 7 are preset drainage duct 4 and fence jack 5 on concrete pedestal 6, are beaten in center protector 7 Enter control point cross mark 8, fence 9 is protected in installation on fence jack 5, the police of brushing yellow black on the side wall of concrete pedestal 6 Show paint face 10.7 opening of center protector capping above control point cross mark 8 has cover sheet 11.

In view of the needs of disturbance rejection, the contour line of concrete pedestal 6 is no less than 1.3m × 1.3m, and excavation of foundation pit is deep Degree is no less than 1.5m in principle, and the bed course depth of burying should be greater than the standard frost penetration of construction project region, standard Frost penetration should determine that excavation of foundation pit slope is answered according to the relevant regulations in " Code for design of building " (GB50007) Require to carry out according to the slope that proposes in the report of construction project geotechnical engineering investigation, after excavation of foundation pit should surrounding add fence into Row protection.

Bottom of foundation ditch first carries out compacting processing, and compacted density should reach 0.95 or more after compacting, then concrete cushion of constructing 1, the thickness of concrete cushion 1 is no less than 20cm, and strength grade of concrete is not lower than C15, reaches to blinding concrete intensity To be not less than design strength 75% when, can supporting module, continue construct top pour pile body and markstone, pile body 2 and markstone 3 Strength grade of concrete be not lower than C25, when concrete strength reaches 75% not less than design strength, demoulding can be carried out Operation is backfilled, the backfill of stake week should be layered implementation, and single layer backfill thickness should not exceed 300cm, and every layer is both needed to be compacted, and compacting factor is not It should be less than 0.90, be backfilled to ground elevation.

The point centered on control point cross mark 8 excavates in the outer contour of control point lower than ground not less than 15cm, Formwork cast-in-place concrete pedestal, form height are no less than 35cm, and it is not small that guarantee pours the above concrete pedestal thickness in rear ground In 20cm, center protection slot template should be maked somebody a mere figurehead and is reliably fixed, and template 10~15cm of depth, the height that is above the ground level is not less than 5cm, Center protector 7 is in design square or rectangular, and drainage duct 4 is diagonally arranged in protection trench bottom, and drainage duct 4 should diagonally be set It sets, the ground to the outside of pedestal is arranged in bottom.

The fence jack 5 of protection fence 9 is located on pedestal, and jack plastics or steel angle nest are inserted into after concreting, Then plastering leveling base-plates surface, it is contemplated that actual use is convenient three angles for placing measurement tripod are arranged in base-plates surface Nest, angle nest can be in positive side triangular arrangement.The square design of fence 9 is protected, mating with pedestal jack, fence welding should be smooth It is straight, it first derusts and brushes twice of reflecting at night paint afterwards, first pass can be brushed second time after parching, or paste reflecting at night police Show band.

First pedestal is all brushed when face 10 is painted in the warning of painted concrete pedestal 6 as yellow, stickup paint after parching Isolating bar, then it is spaced brushing black paint, paint removes isolating bar after parching.

The above overall dimensions design can make the appropriate adjustments according to the actual situation according to site condition, execution conditions etc., but It should not be reduced in size design.

The rigidity that the utility model measures control point is big, can effectively prevent external disturbance, not outstanding vulnerable to construction infection It is to carry on construction work at night or vehicular traffic damage, and design to whole construction project engineering surveying control points and construction, which have, uses for reference meaning Justice.

The above content is combine specific embodiment further detailed description of the utility model, and it cannot be said that Specific embodiment of the present utility model is only limitted to this, all within the principle of the utility model, can also make several simple Deduction or replace, these simple deduction or replace all shall be regarded as belonging to the patent determined by submitted claims and protect Protect range.

Claims (7)

1. a kind of engineering surveying control point structure, it is characterised in that: including concrete cushion (1) located underground, pile body (2) and Markstone (3), and concrete pedestal (6) and protection fence (9) on ground；Concrete cushion (1) setting In the bottom at control point, pile body (2) and markstone (3) are successively poured on concrete cushion (1), surrounding puddled backfill to ground is marked Height, cast-in-place concrete pedestal (6) and center protector (7), preset drainage duct (4) on concrete pedestal (6) and fence is inserted Control point cross mark (8) is squeezed into hole (5) at center in protector (7), installation protection is enclosed on the fence jack (5) Warning paint face (10) is brushed on column (9) on the side wall of the concrete pedestal (6).

2. engineering surveying control point structure according to claim 1, it is characterised in that: in control point cross mark (8) Center protector (7) the opening capping of side has cover sheet (11).

3. engineering surveying control point structure according to claim 1, it is characterised in that: the concrete cushion (1) buries If depth is greater than the standard frost penetration of construction project region.

4. engineering surveying control point structure according to claim 1 or 3, it is characterised in that: the concrete cushion (1), Pile body (2) and markstone (3) pour height together not less than 1.5m；The strength grade of the concrete cushion (1) is not less than The strength grade of C15, pile body (2) and markstone (3) is not less than C25.

5. engineering surveying control point structure according to claim 1, it is characterised in that: the bottom of the center protector (7) Face is lower than the bottom surface of concrete pedestal (6), and control point cross mark (8) is located at the center of center protector (7).

6. engineering surveying control point structure according to claim 1, it is characterised in that: on the concrete pedestal (6) Two drainage ducts (4) are provided with, two drainage ducts (4) open up in diagonal position.

7. engineering surveying control point structure according to claim 1, it is characterised in that: warning paint face (10) is adopted It is formed with yellow dirty oil paint brushing, the protection fence (9) is made of steel pipe.