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Maintenance requirements for communication tower foundations

作者:广信通信 发表时间:2016-01-05 20:08:56 Article Source: Communications tower Author: Guangxin Communications Published: 2016-01-05 20:08:56
(1) Communication tower foundation pile concrete shall be covered with straw mat or plastic film for moisture conservation within 12 hours after irrigation. The covering shall be tight and the plastic film shall be condensed. Generally, it shall be cured for about 28 days (by weather and temperature) Decide).
(2) The basic maintenance period of the communication tower can be calculated according to the period when the average daily temperature accumulatively reaches 6000 C 不 d. Periods below 00 C are not counted. The minimum maintenance period should not be less than 14d, but it should not be more than 60d. .
(3) When the temperature of the communication tower foundation is low, appropriate insulation measures should be taken.
(4) Before the concrete strength of the communication tower foundation reaches 1.2N / mm2, it is not allowed to step on or install the formwork or bracket on the communication tower foundation.
(5) When the average temperature of the day is lower than 50 C, the communication tower foundation shall not be watered.
(6) Samples shall be submitted for inspection according to the national standard GBJ107 "Concrete Strength Inspection and Evaluation Standards". The communication tower can be installed only after reaching the standard.
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When the foundation of the communication tower is returned to the ground, do not backfill it with rocks around the angle of the grounding body. Instead, backfill it with soft soil to ensure that the grounding resistance is good and the back soil must be compacted. Generally, soil should not be returned until the end of the curing period.
When supervising the construction of a communication tower, each process must be performed at a side station and equipped with a photo (video) camera to take necessary photos or videos.
After the construction of the communication tower foundation is completed, the construction unit, the supervision unit, and the design unit, the civil construction unit, and the iron tower construction unit shall conduct joint acceptance of the communication tower foundation.
When the communication tower foundation is accepted, the civil construction unit shall submit the following technical information:
基础 Communication tower basic design documents (including design change notification and material substitution certification documents);
质量 Communication tower foundation material quality certificate or material re-inspection report;
(I) Visa records for concealed works of communication tower foundations;
试验 Test report of compressive strength of concrete of communication tower foundation;
记录 Communication tower foundation concrete engineering construction records; (material quality, cement, sand, stone ratio, maintenance period, etc.)
复 Communication tower foundation retest records;
记录 Communication tower foundation ground resistance test record (General ground resistance should be <5Ω)
The results of the joint inspection of the communication tower foundation shall comply with the design requirements and the relevant national quality inspection specifications such as the "Construction Quality Acceptance Specifications for Concrete Structure Engineering" (GB50204-2002). And review the data according to the basic acceptance data of the communication tower, the anchorage of the tower feet and anchor bolts, and the deviation of the flange support surface should comply with the basic standards of the communication tower.
通讯塔 Article Tags: Communication Tower